diff --git a/app/src/main/kotlin/com/simplemobiletools/dialer/activities/CallActivity.kt b/app/src/main/kotlin/com/simplemobiletools/dialer/activities/CallActivity.kt
index b172dd5c..7331de0f 100644
--- a/app/src/main/kotlin/com/simplemobiletools/dialer/activities/CallActivity.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/dialer/activities/CallActivity.kt
@@ -26,13 +26,12 @@ import com.simplemobiletools.commons.extensions.*
 import com.simplemobiletools.commons.helpers.*
 import com.simplemobiletools.commons.models.SimpleListItem
 import com.simplemobiletools.dialer.R
+import com.simplemobiletools.dialer.databinding.ActivityCallBinding
 import com.simplemobiletools.dialer.dialogs.DynamicBottomSheetChooserDialog
 import com.simplemobiletools.dialer.extensions.*
 import com.simplemobiletools.dialer.helpers.*
 import com.simplemobiletools.dialer.models.AudioRoute
 import com.simplemobiletools.dialer.models.CallContact
-import kotlinx.android.synthetic.main.activity_call.*
-import kotlinx.android.synthetic.main.dialpad.*
 import kotlin.math.max
 import kotlin.math.min
 
@@ -45,6 +44,8 @@ class CallActivity : SimpleActivity() {
         }
     }
 
+    private val binding by viewBinding(ActivityCallBinding::inflate)
+
     private var isSpeakerOn = false
     private var isMicrophoneOff = false
     private var isCallEnded = false
@@ -63,14 +64,14 @@ class CallActivity : SimpleActivity() {
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_call)
+        setContentView(binding.root)
 
         if (CallManager.getPhoneState() == NoCall) {
             finish()
             return
         }
 
-        updateTextColors(call_holder)
+        updateTextColors(binding.callHolder)
         initButtons()
         audioManager.mode = AudioManager.MODE_IN_CALL
         addLockScreenFlags()
@@ -104,7 +105,7 @@ class CallActivity : SimpleActivity() {
     }
 
     override fun onBackPressed() {
-        if (dialpad_wrapper.isVisible()) {
+        if (binding.dialpadWrapper.isVisible()) {
             hideDialpad()
             return
         } else {
@@ -117,119 +118,121 @@ class CallActivity : SimpleActivity() {
         }
     }
 
-    private fun initButtons() {
+    private fun initButtons() = binding.apply {
         if (config.disableSwipeToAnswer) {
-            call_draggable.beGone()
-            call_draggable_background.beGone()
-            call_left_arrow.beGone()
-            call_right_arrow.beGone()
+            callDraggable.beGone()
+            callDraggableBackground.beGone()
+            callLeftArrow.beGone()
+            callRightArrow.beGone()
 
-            call_decline.setOnClickListener {
+            callDecline.setOnClickListener {
                 endCall()
             }
 
-            call_accept.setOnClickListener {
+            callAccept.setOnClickListener {
                 acceptCall()
             }
         } else {
             handleSwipe()
         }
 
-        call_toggle_microphone.setOnClickListener {
+        callToggleMicrophone.setOnClickListener {
             toggleMicrophone()
         }
 
-        call_toggle_speaker.setOnClickListener {
+        callToggleSpeaker.setOnClickListener {
             changeCallAudioRoute()
         }
 
-        call_dialpad.setOnClickListener {
+        callDialpad.setOnClickListener {
             toggleDialpadVisibility()
         }
 
-        dialpad_close.setOnClickListener {
+        dialpadClose.setOnClickListener {
             hideDialpad()
         }
 
-        call_toggle_hold.setOnClickListener {
+        callToggleHold.setOnClickListener {
             toggleHold()
         }
 
-        call_add.setOnClickListener {
+        callAdd.setOnClickListener {
             Intent(applicationContext, DialpadActivity::class.java).apply {
                 addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY)
                 startActivity(this)
             }
         }
 
-        call_swap.setOnClickListener {
+        callSwap.setOnClickListener {
             CallManager.swap()
         }
 
-        call_merge.setOnClickListener {
+        callMerge.setOnClickListener {
             CallManager.merge()
         }
 
-        call_manage.setOnClickListener {
-            startActivity(Intent(this, ConferenceActivity::class.java))
+        callManage.setOnClickListener {
+            startActivity(Intent(this@CallActivity, ConferenceActivity::class.java))
         }
 
-        call_end.setOnClickListener {
+        callEnd.setOnClickListener {
             endCall()
         }
 
-        dialpad_0_holder.setOnClickListener { dialpadPressed('0') }
-        dialpad_1_holder.setOnClickListener { dialpadPressed('1') }
-        dialpad_2_holder.setOnClickListener { dialpadPressed('2') }
-        dialpad_3_holder.setOnClickListener { dialpadPressed('3') }
-        dialpad_4_holder.setOnClickListener { dialpadPressed('4') }
-        dialpad_5_holder.setOnClickListener { dialpadPressed('5') }
-        dialpad_6_holder.setOnClickListener { dialpadPressed('6') }
-        dialpad_7_holder.setOnClickListener { dialpadPressed('7') }
-        dialpad_8_holder.setOnClickListener { dialpadPressed('8') }
-        dialpad_9_holder.setOnClickListener { dialpadPressed('9') }
+        dialpadInclude.apply {
+            dialpad0Holder.setOnClickListener { dialpadPressed('0') }
+            dialpad1Holder.setOnClickListener { dialpadPressed('1') }
+            dialpad2Holder.setOnClickListener { dialpadPressed('2') }
+            dialpad3Holder.setOnClickListener { dialpadPressed('3') }
+            dialpad4Holder.setOnClickListener { dialpadPressed('4') }
+            dialpad5Holder.setOnClickListener { dialpadPressed('5') }
+            dialpad6Holder.setOnClickListener { dialpadPressed('6') }
+            dialpad7Holder.setOnClickListener { dialpadPressed('7') }
+            dialpad8Holder.setOnClickListener { dialpadPressed('8') }
+            dialpad9Holder.setOnClickListener { dialpadPressed('9') }
 
-        arrayOf(
-            dialpad_0_holder,
-            dialpad_1_holder,
-            dialpad_2_holder,
-            dialpad_3_holder,
-            dialpad_4_holder,
-            dialpad_5_holder,
-            dialpad_6_holder,
-            dialpad_7_holder,
-            dialpad_8_holder,
-            dialpad_9_holder,
-            dialpad_plus_holder,
-            dialpad_asterisk_holder,
-            dialpad_hashtag_holder
-        ).forEach {
-            it.background = ResourcesCompat.getDrawable(resources, R.drawable.pill_background, theme)
-            it.background?.alpha = LOWER_ALPHA_INT
+            arrayOf(
+                dialpad0Holder,
+                dialpad1Holder,
+                dialpad2Holder,
+                dialpad3Holder,
+                dialpad4Holder,
+                dialpad5Holder,
+                dialpad6Holder,
+                dialpad7Holder,
+                dialpad8Holder,
+                dialpad9Holder,
+                dialpadPlusHolder,
+                dialpadAsteriskHolder,
+                dialpadHashtagHolder
+            ).forEach {
+                it.background = ResourcesCompat.getDrawable(resources, R.drawable.pill_background, theme)
+                it.background?.alpha = LOWER_ALPHA_INT
+            }
+
+            dialpad0Holder.setOnLongClickListener { dialpadPressed('+'); true }
+            dialpadAsteriskHolder.setOnClickListener { dialpadPressed('*') }
+            dialpadHashtagHolder.setOnClickListener { dialpadPressed('#') }
         }
 
-        dialpad_0_holder.setOnLongClickListener { dialpadPressed('+'); true }
-        dialpad_asterisk_holder.setOnClickListener { dialpadPressed('*') }
-        dialpad_hashtag_holder.setOnClickListener { dialpadPressed('#') }
-
-        dialpad_wrapper.setBackgroundColor(getProperBackgroundColor())
-        arrayOf(dialpad_close, call_sim_image).forEach {
+        dialpadWrapper.setBackgroundColor(getProperBackgroundColor())
+        arrayOf(dialpadClose, callSimImage).forEach {
             it.applyColorFilter(getProperTextColor())
         }
 
         val bgColor = getProperBackgroundColor()
         val inactiveColor = getInactiveButtonColor()
         arrayOf(
-            call_toggle_microphone, call_toggle_speaker, call_dialpad,
-            call_toggle_hold, call_add, call_swap, call_merge, call_manage
+            callToggleMicrophone, callToggleSpeaker, callDialpad,
+            callToggleHold, callAdd, callSwap, callMerge, callManage
         ).forEach {
             it.applyColorFilter(bgColor.getContrastColor())
             it.background.applyColorFilter(inactiveColor)
         }
 
         arrayOf(
-            call_toggle_microphone, call_toggle_speaker, call_dialpad,
-            call_toggle_hold, call_add, call_swap, call_merge, call_manage
+            callToggleMicrophone, callToggleSpeaker, callDialpad,
+            callToggleHold, callAdd, callSwap, callMerge, callManage
         ).forEach { imageView ->
             imageView.setOnLongClickListener {
                 if (!imageView.contentDescription.isNullOrEmpty()) {
@@ -239,16 +242,16 @@ class CallActivity : SimpleActivity() {
             }
         }
 
-        call_sim_id.setTextColor(getProperTextColor().getContrastColor())
-        dialpad_input.disableKeyboard()
+        callSimId.setTextColor(getProperTextColor().getContrastColor())
+        dialpadInput.disableKeyboard()
 
-        dialpad_wrapper.onGlobalLayout {
-            dialpadHeight = dialpad_wrapper.height.toFloat()
+        dialpadWrapper.onGlobalLayout {
+            dialpadHeight = dialpadWrapper.height.toFloat()
         }
     }
 
     @SuppressLint("ClickableViewAccessibility")
-    private fun handleSwipe() {
+    private fun handleSwipe() = binding.apply {
         var minDragX = 0f
         var maxDragX = 0f
         var initialDraggableX = 0f
@@ -262,84 +265,85 @@ class CallActivity : SimpleActivity() {
         var rightArrowTranslation = 0f
 
         val isRtl = isRTLLayout
-        call_accept.onGlobalLayout {
+        callAccept.onGlobalLayout {
             minDragX = if (isRtl) {
-                call_accept.left.toFloat()
+                callAccept.left.toFloat()
             } else {
-                call_decline.left.toFloat()
+                callDecline.left.toFloat()
             }
 
             maxDragX = if (isRtl) {
-                call_decline.left.toFloat()
+                callDecline.left.toFloat()
             } else {
-                call_accept.left.toFloat()
+                callAccept.left.toFloat()
             }
 
-            initialDraggableX = call_draggable.left.toFloat()
-            initialLeftArrowX = call_left_arrow.x
-            initialRightArrowX = call_right_arrow.x
-            initialLeftArrowScaleX = call_left_arrow.scaleX
-            initialLeftArrowScaleY = call_left_arrow.scaleY
-            initialRightArrowScaleX = call_right_arrow.scaleX
-            initialRightArrowScaleY = call_right_arrow.scaleY
+            initialDraggableX = callDraggable.left.toFloat()
+            initialLeftArrowX = callLeftArrow.x
+            initialRightArrowX = callRightArrow.x
+            initialLeftArrowScaleX = callLeftArrow.scaleX
+            initialLeftArrowScaleY = callLeftArrow.scaleY
+            initialRightArrowScaleX = callRightArrow.scaleX
+            initialRightArrowScaleY = callRightArrow.scaleY
             leftArrowTranslation = if (isRtl) {
-                call_accept.x
+                callAccept.x
             } else {
-                -call_decline.x
+                -callDecline.x
             }
 
             rightArrowTranslation = if (isRtl) {
-                -call_accept.x
+                -callAccept.x
             } else {
-                call_decline.x
+                callDecline.x
             }
 
             if (isRtl) {
-                call_left_arrow.setImageResource(R.drawable.ic_chevron_right_vector)
-                call_right_arrow.setImageResource(R.drawable.ic_chevron_left_vector)
+                callLeftArrow.setImageResource(R.drawable.ic_chevron_right_vector)
+                callRightArrow.setImageResource(R.drawable.ic_chevron_left_vector)
             }
 
-            call_left_arrow.applyColorFilter(getColor(R.color.md_red_400))
-            call_right_arrow.applyColorFilter(getColor(R.color.md_green_400))
+            callLeftArrow.applyColorFilter(getColor(R.color.md_red_400))
+            callRightArrow.applyColorFilter(getColor(R.color.md_green_400))
 
-            startArrowAnimation(call_left_arrow, initialLeftArrowX, initialLeftArrowScaleX, initialLeftArrowScaleY, leftArrowTranslation)
-            startArrowAnimation(call_right_arrow, initialRightArrowX, initialRightArrowScaleX, initialRightArrowScaleY, rightArrowTranslation)
+            startArrowAnimation(callLeftArrow, initialLeftArrowX, initialLeftArrowScaleX, initialLeftArrowScaleY, leftArrowTranslation)
+            startArrowAnimation(callRightArrow, initialRightArrowX, initialRightArrowScaleX, initialRightArrowScaleY, rightArrowTranslation)
         }
 
-        call_draggable.drawable.mutate().setTint(getProperTextColor())
-        call_draggable_background.drawable.mutate().setTint(getProperTextColor())
+        callDraggable.drawable.mutate().setTint(getProperTextColor())
+        callDraggableBackground.drawable.mutate().setTint(getProperTextColor())
 
         var lock = false
-        call_draggable.setOnTouchListener { _, event ->
+        callDraggable.setOnTouchListener { _, event ->
             when (event.action) {
                 MotionEvent.ACTION_DOWN -> {
                     dragDownX = event.x
-                    call_draggable_background.animate().alpha(0f)
+                    callDraggableBackground.animate().alpha(0f)
                     stopAnimation = true
-                    call_left_arrow.animate().alpha(0f)
-                    call_right_arrow.animate().alpha(0f)
+                    callLeftArrow.animate().alpha(0f)
+                    callRightArrow.animate().alpha(0f)
                     lock = false
                 }
+
                 MotionEvent.ACTION_UP, MotionEvent.ACTION_CANCEL -> {
                     dragDownX = 0f
-                    call_draggable.animate().x(initialDraggableX).withEndAction {
-                        call_draggable_background.animate().alpha(0.2f)
+                    callDraggable.animate().x(initialDraggableX).withEndAction {
+                        callDraggableBackground.animate().alpha(0.2f)
                     }
-                    call_draggable.setImageDrawable(getDrawable(R.drawable.ic_phone_down_vector))
-                    call_draggable.drawable.mutate().setTint(getProperTextColor())
-                    call_left_arrow.animate().alpha(1f)
-                    call_right_arrow.animate().alpha(1f)
+                    callDraggable.setImageDrawable(getDrawable(R.drawable.ic_phone_down_vector))
+                    callDraggable.drawable.mutate().setTint(getProperTextColor())
+                    callLeftArrow.animate().alpha(1f)
+                    callRightArrow.animate().alpha(1f)
                     stopAnimation = false
-                    startArrowAnimation(call_left_arrow, initialLeftArrowX, initialLeftArrowScaleX, initialLeftArrowScaleY, leftArrowTranslation)
-                    startArrowAnimation(call_right_arrow, initialRightArrowX, initialRightArrowScaleX, initialRightArrowScaleY, rightArrowTranslation)
+                    startArrowAnimation(callLeftArrow, initialLeftArrowX, initialLeftArrowScaleX, initialLeftArrowScaleY, leftArrowTranslation)
+                    startArrowAnimation(callRightArrow, initialRightArrowX, initialRightArrowScaleX, initialRightArrowScaleY, rightArrowTranslation)
                 }
                 MotionEvent.ACTION_MOVE -> {
-                    call_draggable.x = min(maxDragX, max(minDragX, event.rawX - dragDownX))
+                    callDraggable.x = min(maxDragX, max(minDragX, event.rawX - dragDownX))
                     when {
-                        call_draggable.x >= maxDragX - 50f -> {
+                        callDraggable.x >= maxDragX - 50f -> {
                             if (!lock) {
                                 lock = true
-                                call_draggable.performHapticFeedback()
+                                callDraggable.performHapticFeedback()
                                 if (isRtl) {
                                     endCall()
                                 } else {
@@ -347,10 +351,11 @@ class CallActivity : SimpleActivity() {
                                 }
                             }
                         }
-                        call_draggable.x <= minDragX + 50f -> {
+
+                        callDraggable.x <= minDragX + 50f -> {
                             if (!lock) {
                                 lock = true
-                                call_draggable.performHapticFeedback()
+                                callDraggable.performHapticFeedback()
                                 if (isRtl) {
                                     acceptCall()
                                 } else {
@@ -358,23 +363,25 @@ class CallActivity : SimpleActivity() {
                                 }
                             }
                         }
-                        call_draggable.x > initialDraggableX -> {
+
+                        callDraggable.x > initialDraggableX -> {
                             lock = false
                             val drawableRes = if (isRtl) {
                                 R.drawable.ic_phone_down_red_vector
                             } else {
                                 R.drawable.ic_phone_green_vector
                             }
-                            call_draggable.setImageDrawable(getDrawable(drawableRes))
+                            callDraggable.setImageDrawable(getDrawable(drawableRes))
                         }
-                        call_draggable.x <= initialDraggableX -> {
+
+                        callDraggable.x <= initialDraggableX -> {
                             lock = false
                             val drawableRes = if (isRtl) {
                                 R.drawable.ic_phone_green_vector
                             } else {
                                 R.drawable.ic_phone_down_red_vector
                             }
-                            call_draggable.setImageDrawable(getDrawable(drawableRes))
+                            callDraggable.setImageDrawable(getDrawable(drawableRes))
                         }
                     }
                 }
@@ -405,7 +412,7 @@ class CallActivity : SimpleActivity() {
 
     private fun dialpadPressed(char: Char) {
         CallManager.keypad(char)
-        dialpad_input.addCharacter(char)
+        binding.dialpadInput.addCharacter(char)
     }
 
     private fun changeCallAudioRoute() {
@@ -449,7 +456,7 @@ class CallActivity : SimpleActivity() {
 
             isSpeakerOn = route == AudioRoute.SPEAKER
             val supportedAudioRoutes = CallManager.getSupportedAudioRoutes()
-            call_toggle_speaker.apply {
+            binding.callToggleSpeaker.apply {
                 val bluetoothConnected = supportedAudioRoutes.contains(AudioRoute.BLUETOOTH)
                 contentDescription = if (bluetoothConnected) {
                     getString(R.string.choose_audio_route)
@@ -463,7 +470,7 @@ class CallActivity : SimpleActivity() {
                     setImageResource(route.iconRes)
                 }
             }
-            toggleButtonColor(call_toggle_speaker, enabled = route != AudioRoute.EARPIECE && route != AudioRoute.WIRED_HEADSET)
+            toggleButtonColor(binding.callToggleSpeaker, enabled = route != AudioRoute.EARPIECE && route != AudioRoute.WIRED_HEADSET)
             createOrUpdateAudioRouteChooser(supportedAudioRoutes, create = false)
 
             if (isSpeakerOn) {
@@ -482,20 +489,20 @@ class CallActivity : SimpleActivity() {
     }
 
     private fun updateMicrophoneButton() {
-        toggleButtonColor(call_toggle_microphone, isMicrophoneOff)
-        call_toggle_microphone.contentDescription = getString(if (isMicrophoneOff) R.string.turn_microphone_on else R.string.turn_microphone_off)
+        toggleButtonColor(binding.callToggleMicrophone, isMicrophoneOff)
+        binding.callToggleMicrophone.contentDescription = getString(if (isMicrophoneOff) R.string.turn_microphone_on else R.string.turn_microphone_off)
     }
 
     private fun toggleDialpadVisibility() {
-        if (dialpad_wrapper.isVisible()) hideDialpad() else showDialpad()
+        if (binding.dialpadWrapper.isVisible()) hideDialpad() else showDialpad()
     }
 
     private fun findVisibleViewsUnderDialpad(): Sequence<Pair<View, Float>> {
-        return ongoing_call_holder.children.filter { it.isVisible() }.map { view -> Pair(view, view.alpha) }
+        return binding.ongoingCallHolder.children.filter { it.isVisible() }.map { view -> Pair(view, view.alpha) }
     }
 
     private fun showDialpad() {
-        dialpad_wrapper.apply {
+        binding.dialpadWrapper.apply {
             translationY = dialpadHeight
             alpha = 0f
             animate()
@@ -518,8 +525,8 @@ class CallActivity : SimpleActivity() {
     }
 
     private fun hideDialpad() {
-        dialpad_wrapper.animate()
-            .withEndAction { dialpad_wrapper.beGone() }
+        binding.dialpadWrapper.animate()
+            .withEndAction { binding.dialpadWrapper.beGone() }
             .setInterpolator(AccelerateDecelerateInterpolator())
             .setDuration(200L)
             .alpha(0f)
@@ -536,9 +543,9 @@ class CallActivity : SimpleActivity() {
 
     private fun toggleHold() {
         val isOnHold = CallManager.toggleHold()
-        toggleButtonColor(call_toggle_hold, isOnHold)
-        call_toggle_hold.contentDescription = getString(if (isOnHold) R.string.resume_call else R.string.hold_call)
-        hold_status_label.beVisibleIf(isOnHold)
+        toggleButtonColor(binding.callToggleHold, isOnHold)
+        binding.callToggleHold.contentDescription = getString(if (isOnHold) R.string.resume_call else R.string.hold_call)
+        binding.holdStatusLabel.beVisibleIf(isOnHold)
     }
 
     private fun updateOtherPersonsInfo(avatar: Bitmap?) {
@@ -546,21 +553,23 @@ class CallActivity : SimpleActivity() {
             return
         }
 
-        caller_name_label.text = if (callContact!!.name.isNotEmpty()) callContact!!.name else getString(R.string.unknown_caller)
-        if (callContact!!.number.isNotEmpty() && callContact!!.number != callContact!!.name) {
-            caller_number.text = callContact!!.number
+        binding.apply {
+            callerNameLabel.text = if (callContact!!.name.isNotEmpty()) callContact!!.name else getString(R.string.unknown_caller)
+            if (callContact!!.number.isNotEmpty() && callContact!!.number != callContact!!.name) {
+                callerNumber.text = callContact!!.number
 
-            if (callContact!!.numberLabel.isNotEmpty()) {
-                caller_number.text = "${callContact!!.number} - ${callContact!!.numberLabel}"
+                if (callContact!!.numberLabel.isNotEmpty()) {
+                    callerNumber.text = "${callContact!!.number} - ${callContact!!.numberLabel}"
+                }
+            } else {
+                callerNumber.beGone()
             }
-        } else {
-            caller_number.beGone()
-        }
 
-        if (avatar != null) {
-            caller_avatar.setImageBitmap(avatar)
-        } else {
-            caller_avatar.setImageDrawable(null)
+            if (avatar != null) {
+                callerAvatar.setImageBitmap(avatar)
+            } else {
+                callerAvatar.setImageDrawable(null)
+            }
         }
     }
 
@@ -579,9 +588,11 @@ class CallActivity : SimpleActivity() {
             if (accounts.size > 1) {
                 accounts.forEachIndexed { index, account ->
                     if (account == CallManager.getPrimaryCall()?.details?.accountHandle) {
-                        call_sim_id.text = "${index + 1}"
-                        call_sim_id.beVisible()
-                        call_sim_image.beVisible()
+                        binding.apply {
+                            callSimId.text = "${index + 1}"
+                            callSimId.beVisible()
+                            callSimImage.beVisible()
+                        }
 
                         val acceptDrawableId = when (index) {
                             0 -> R.drawable.ic_phone_one_vector
@@ -592,7 +603,7 @@ class CallActivity : SimpleActivity() {
                         val rippleBg = resources.getDrawable(R.drawable.ic_call_accept, theme) as RippleDrawable
                         val layerDrawable = rippleBg.findDrawableByLayerId(R.id.accept_call_background_holder) as LayerDrawable
                         layerDrawable.setDrawableByLayerId(R.id.accept_call_icon, getDrawable(acceptDrawableId))
-                        call_accept.setImageDrawable(rippleBg)
+                        binding.callAccept.setImageDrawable(rippleBg)
                     }
                 }
             }
@@ -616,13 +627,15 @@ class CallActivity : SimpleActivity() {
             else -> 0
         }
 
-        if (statusTextId != 0) {
-            call_status_label.text = getString(statusTextId)
-        }
+        binding.apply {
+            if (statusTextId != 0) {
+                callStatusLabel.text = getString(statusTextId)
+            }
 
-        call_manage.beVisibleIf(call.hasCapability(Call.Details.CAPABILITY_MANAGE_CONFERENCE))
-        setActionButtonEnabled(call_swap, state == Call.STATE_ACTIVE)
-        setActionButtonEnabled(call_merge, state == Call.STATE_ACTIVE)
+            callManage.beVisibleIf(call.hasCapability(Call.Details.CAPABILITY_MANAGE_CONFERENCE))
+            setActionButtonEnabled(callSwap, state == Call.STATE_ACTIVE)
+            setActionButtonEnabled(callMerge, state == Call.STATE_ACTIVE)
+        }
     }
 
     private fun updateState() {
@@ -633,8 +646,8 @@ class CallActivity : SimpleActivity() {
             val state = phoneState.call.getStateCompat()
             val isSingleCallActionsEnabled = (state == Call.STATE_ACTIVE || state == Call.STATE_DISCONNECTED
                 || state == Call.STATE_DISCONNECTING || state == Call.STATE_HOLDING)
-            setActionButtonEnabled(call_toggle_hold, isSingleCallActionsEnabled)
-            setActionButtonEnabled(call_add, isSingleCallActionsEnabled)
+            setActionButtonEnabled(binding.callToggleHold, isSingleCallActionsEnabled)
+            setActionButtonEnabled(binding.callAdd, isSingleCallActionsEnabled)
         } else if (phoneState is TwoCalls) {
             updateCallState(phoneState.active)
             updateCallOnHoldState(phoneState.onHold)
@@ -648,13 +661,15 @@ class CallActivity : SimpleActivity() {
         if (hasCallOnHold) {
             getCallContact(applicationContext, call) { contact ->
                 runOnUiThread {
-                    on_hold_caller_name.text = getContactNameOrNumber(contact)
+                    binding.onHoldCallerName.text = getContactNameOrNumber(contact)
                 }
             }
         }
-        on_hold_status_holder.beVisibleIf(hasCallOnHold)
-        controls_single_call.beVisibleIf(!hasCallOnHold)
-        controls_two_calls.beVisibleIf(hasCallOnHold)
+        binding.apply {
+            onHoldStatusHolder.beVisibleIf(hasCallOnHold)
+            controlsSingleCall.beVisibleIf(!hasCallOnHold)
+            controlsTwoCalls.beVisibleIf(hasCallOnHold)
+        }
     }
 
     private fun updateCallContactInfo(call: Call?) {
@@ -677,18 +692,18 @@ class CallActivity : SimpleActivity() {
 
     private fun initOutgoingCallUI() {
         enableProximitySensor()
-        incoming_call_holder.beGone()
-        ongoing_call_holder.beVisible()
+        binding.incomingCallHolder.beGone()
+        binding.ongoingCallHolder.beVisible()
     }
 
     private fun callRinging() {
-        incoming_call_holder.beVisible()
+        binding.incomingCallHolder.beVisible()
     }
 
     private fun callStarted() {
         enableProximitySensor()
-        incoming_call_holder.beGone()
-        ongoing_call_holder.beVisible()
+        binding.incomingCallHolder.beGone()
+        binding.ongoingCallHolder.beVisible()
         callDurationHandler.removeCallbacks(updateCallDurationTask)
         callDurationHandler.post(updateCallDurationTask)
     }
@@ -719,13 +734,13 @@ class CallActivity : SimpleActivity() {
         isCallEnded = true
         if (callDuration > 0) {
             runOnUiThread {
-                call_status_label.text = "${callDuration.getFormattedDuration()} (${getString(R.string.call_ended)})"
+                binding.callStatusLabel.text = "${callDuration.getFormattedDuration()} (${getString(R.string.call_ended)})"
                 Handler().postDelayed({
                     finishAndRemoveTask()
                 }, 3000)
             }
         } else {
-            call_status_label.text = getString(R.string.call_ended)
+            binding.callStatusLabel.text = getString(R.string.call_ended)
             finish()
         }
     }
@@ -750,7 +765,7 @@ class CallActivity : SimpleActivity() {
         override fun run() {
             callDuration = CallManager.getPrimaryCall().getCallDuration()
             if (!isCallEnded) {
-                call_status_label.text = callDuration.getFormattedDuration()
+                binding.callStatusLabel.text = callDuration.getFormattedDuration()
                 callDurationHandler.postDelayed(this, 1000)
             }
         }
diff --git a/app/src/main/kotlin/com/simplemobiletools/dialer/activities/ConferenceActivity.kt b/app/src/main/kotlin/com/simplemobiletools/dialer/activities/ConferenceActivity.kt
index a4da2049..4de8a155 100644
--- a/app/src/main/kotlin/com/simplemobiletools/dialer/activities/ConferenceActivity.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/dialer/activities/ConferenceActivity.kt
@@ -1,25 +1,28 @@
 package com.simplemobiletools.dialer.activities
 
 import android.os.Bundle
+import com.simplemobiletools.commons.extensions.viewBinding
 import com.simplemobiletools.commons.helpers.NavigationIcon
-import com.simplemobiletools.dialer.R
 import com.simplemobiletools.dialer.adapters.ConferenceCallsAdapter
+import com.simplemobiletools.dialer.databinding.ActivityConferenceBinding
 import com.simplemobiletools.dialer.helpers.CallManager
-import kotlinx.android.synthetic.main.activity_conference.*
 
 class ConferenceActivity : SimpleActivity() {
+    private val binding by viewBinding(ActivityConferenceBinding::inflate)
 
     override fun onCreate(savedInstanceState: Bundle?) {
         isMaterialActivity = true
         super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_conference)
-        updateMaterialActivityViews(conference_coordinator, conference_list, useTransparentNavigation = true, useTopSearchMenu = false)
-        setupMaterialScrollListener(conference_list, conference_toolbar)
-        conference_list.adapter = ConferenceCallsAdapter(this, conference_list, ArrayList(CallManager.getConferenceCalls())) {}
+        setContentView(binding.root)
+        binding.apply {
+            updateMaterialActivityViews(conferenceCoordinator, conferenceList, useTransparentNavigation = true, useTopSearchMenu = false)
+            setupMaterialScrollListener(conferenceList, conferenceToolbar)
+            conferenceList.adapter = ConferenceCallsAdapter(this@ConferenceActivity, conferenceList, ArrayList(CallManager.getConferenceCalls())) {}
+        }
     }
 
     override fun onResume() {
         super.onResume()
-        setupToolbar(conference_toolbar, NavigationIcon.Arrow)
+        setupToolbar(binding.conferenceToolbar, NavigationIcon.Arrow)
     }
 }
diff --git a/app/src/main/kotlin/com/simplemobiletools/dialer/activities/DialpadActivity.kt b/app/src/main/kotlin/com/simplemobiletools/dialer/activities/DialpadActivity.kt
index 3ee302ae..f18bf27b 100644
--- a/app/src/main/kotlin/com/simplemobiletools/dialer/activities/DialpadActivity.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/dialer/activities/DialpadActivity.kt
@@ -26,17 +26,17 @@ import com.simplemobiletools.commons.helpers.*
 import com.simplemobiletools.commons.models.contacts.Contact
 import com.simplemobiletools.dialer.R
 import com.simplemobiletools.dialer.adapters.ContactsAdapter
+import com.simplemobiletools.dialer.databinding.ActivityDialpadBinding
 import com.simplemobiletools.dialer.extensions.*
 import com.simplemobiletools.dialer.helpers.DIALPAD_TONE_LENGTH_MS
 import com.simplemobiletools.dialer.helpers.ToneGeneratorHelper
 import com.simplemobiletools.dialer.models.SpeedDial
-import kotlinx.android.synthetic.main.activity_dialpad.*
-import kotlinx.android.synthetic.main.activity_dialpad.dialpad_holder
-import kotlinx.android.synthetic.main.dialpad.*
 import java.util.*
 import kotlin.math.roundToInt
 
 class DialpadActivity : SimpleActivity() {
+    private val binding by viewBinding(ActivityDialpadBinding::inflate)
+
     private var allContacts = ArrayList<Contact>()
     private var speedDialValues = ArrayList<SpeedDial>()
     private val russianCharsMap = HashMap<Char, Int>()
@@ -49,48 +49,53 @@ class DialpadActivity : SimpleActivity() {
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_dialpad)
+        setContentView(binding.root)
         hasRussianLocale = Locale.getDefault().language == "ru"
 
-        updateMaterialActivityViews(dialpad_coordinator, dialpad_holder, useTransparentNavigation = true, useTopSearchMenu = false)
-        setupMaterialScrollListener(dialpad_list, dialpad_toolbar)
+        binding.apply {
+            updateMaterialActivityViews(dialpadCoordinator, dialpadHolder, useTransparentNavigation = true, useTopSearchMenu = false)
+            setupMaterialScrollListener(dialpadList, dialpadToolbar)
+        }
+
         updateNavigationBarColor(getProperBackgroundColor())
 
         if (checkAppSideloading()) {
             return
         }
 
-        if (config.hideDialpadNumbers) {
-            dialpad_1_holder.isVisible = false
-            dialpad_2_holder.isVisible = false
-            dialpad_3_holder.isVisible = false
-            dialpad_4_holder.isVisible = false
-            dialpad_5_holder.isVisible = false
-            dialpad_6_holder.isVisible = false
-            dialpad_7_holder.isVisible = false
-            dialpad_8_holder.isVisible = false
-            dialpad_9_holder.isVisible = false
-            dialpad_plus_holder.isVisible = true
-            dialpad_0_holder.visibility = View.INVISIBLE
-        }
+        binding.dialpadWrapper.apply {
+            if (config.hideDialpadNumbers) {
+                dialpad1Holder.isVisible = false
+                dialpad2Holder.isVisible = false
+                dialpad3Holder.isVisible = false
+                dialpad4Holder.isVisible = false
+                dialpad5Holder.isVisible = false
+                dialpad6Holder.isVisible = false
+                dialpad7Holder.isVisible = false
+                dialpad8Holder.isVisible = false
+                dialpad9Holder.isVisible = false
+                dialpadPlusHolder.isVisible = true
+                dialpad0Holder.visibility = View.INVISIBLE
+            }
 
-        arrayOf(
-            dialpad_0_holder,
-            dialpad_1_holder,
-            dialpad_2_holder,
-            dialpad_3_holder,
-            dialpad_4_holder,
-            dialpad_5_holder,
-            dialpad_6_holder,
-            dialpad_7_holder,
-            dialpad_8_holder,
-            dialpad_9_holder,
-            dialpad_plus_holder,
-            dialpad_asterisk_holder,
-            dialpad_hashtag_holder
-        ).forEach {
-            it.background = ResourcesCompat.getDrawable(resources, R.drawable.pill_background, theme)
-            it.background?.alpha = LOWER_ALPHA_INT
+            arrayOf(
+                dialpad0Holder,
+                dialpad1Holder,
+                dialpad2Holder,
+                dialpad3Holder,
+                dialpad4Holder,
+                dialpad5Holder,
+                dialpad6Holder,
+                dialpad7Holder,
+                dialpad8Holder,
+                dialpad9Holder,
+                dialpadPlusHolder,
+                dialpadAsteriskHolder,
+                dialpadHashtagHolder
+            ).forEach {
+                it.background = ResourcesCompat.getDrawable(resources, R.drawable.pill_background, theme)
+                it.background?.alpha = LOWER_ALPHA_INT
+            }
         }
 
         setupOptionsMenu()
@@ -99,46 +104,50 @@ class DialpadActivity : SimpleActivity() {
 
         toneGeneratorHelper = ToneGeneratorHelper(this, DIALPAD_TONE_LENGTH_MS)
 
-        if (hasRussianLocale) {
-            initRussianChars()
-            dialpad_2_letters.append("\nАБВГ")
-            dialpad_3_letters.append("\nДЕЁЖЗ")
-            dialpad_4_letters.append("\nИЙКЛ")
-            dialpad_5_letters.append("\nМНОП")
-            dialpad_6_letters.append("\nРСТУ")
-            dialpad_7_letters.append("\nФХЦЧ")
-            dialpad_8_letters.append("\nШЩЪЫ")
-            dialpad_9_letters.append("\nЬЭЮЯ")
+        binding.dialpadWrapper.apply {
+            if (hasRussianLocale) {
+                initRussianChars()
+                dialpad2Letters.append("\nАБВГ")
+                dialpad3Letters.append("\nДЕЁЖЗ")
+                dialpad4Letters.append("\nИЙКЛ")
+                dialpad5Letters.append("\nМНОП")
+                dialpad6Letters.append("\nРСТУ")
+                dialpad7Letters.append("\nФХЦЧ")
+                dialpad8Letters.append("\nШЩЪЫ")
+                dialpad9Letters.append("\nЬЭЮЯ")
 
-            val fontSize = resources.getDimension(R.dimen.small_text_size)
-            arrayOf(
-                dialpad_2_letters, dialpad_3_letters, dialpad_4_letters, dialpad_5_letters, dialpad_6_letters, dialpad_7_letters, dialpad_8_letters,
-                dialpad_9_letters
-            ).forEach {
-                it.setTextSize(TypedValue.COMPLEX_UNIT_PX, fontSize)
+                val fontSize = resources.getDimension(R.dimen.small_text_size)
+                arrayOf(
+                    dialpad2Letters, dialpad3Letters, dialpad4Letters, dialpad5Letters, dialpad6Letters, dialpad7Letters, dialpad8Letters,
+                    dialpad9Letters
+                ).forEach {
+                    it.setTextSize(TypedValue.COMPLEX_UNIT_PX, fontSize)
+                }
             }
+
+            setupCharClick(dialpad1Holder, '1')
+            setupCharClick(dialpad2Holder, '2')
+            setupCharClick(dialpad3Holder, '3')
+            setupCharClick(dialpad4Holder, '4')
+            setupCharClick(dialpad5Holder, '5')
+            setupCharClick(dialpad6Holder, '6')
+            setupCharClick(dialpad7Holder, '7')
+            setupCharClick(dialpad8Holder, '8')
+            setupCharClick(dialpad9Holder, '9')
+            setupCharClick(dialpad0Holder, '0')
+            setupCharClick(dialpadPlusHolder, '+', longClickable = false)
+            setupCharClick(dialpadAsteriskHolder, '*', longClickable = false)
+            setupCharClick(dialpadHashtagHolder, '#', longClickable = false)
         }
 
-        setupCharClick(dialpad_1_holder, '1')
-        setupCharClick(dialpad_2_holder, '2')
-        setupCharClick(dialpad_3_holder, '3')
-        setupCharClick(dialpad_4_holder, '4')
-        setupCharClick(dialpad_5_holder, '5')
-        setupCharClick(dialpad_6_holder, '6')
-        setupCharClick(dialpad_7_holder, '7')
-        setupCharClick(dialpad_8_holder, '8')
-        setupCharClick(dialpad_9_holder, '9')
-        setupCharClick(dialpad_0_holder, '0')
-        setupCharClick(dialpad_plus_holder, '+', longClickable = false)
-        setupCharClick(dialpad_asterisk_holder, '*', longClickable = false)
-        setupCharClick(dialpad_hashtag_holder, '#', longClickable = false)
-
-        dialpad_clear_char.setOnClickListener { clearChar(it) }
-        dialpad_clear_char.setOnLongClickListener { clearInput(); true }
-        dialpad_call_button.setOnClickListener { initCall(dialpad_input.value, 0) }
-        dialpad_input.onTextChangeListener { dialpadValueChanged(it) }
-        dialpad_input.requestFocus()
-        dialpad_input.disableKeyboard()
+        binding.apply {
+            dialpadClearChar.setOnClickListener { clearChar(it) }
+            dialpadClearChar.setOnLongClickListener { clearInput(); true }
+            dialpadCallButton.setOnClickListener { initCall(dialpadInput.value, 0) }
+            dialpadInput.onTextChangeListener { dialpadValueChanged(it) }
+            dialpadInput.requestFocus()
+            dialpadInput.disableKeyboard()
+        }
 
         ContactsHelper(this).getContacts(showOnlyContactsWithNumbers = true) { allContacts ->
             gotContacts(allContacts)
@@ -147,11 +156,13 @@ class DialpadActivity : SimpleActivity() {
         val properPrimaryColor = getProperPrimaryColor()
         val callIconId = if (areMultipleSIMsAvailable()) {
             val callIcon = resources.getColoredDrawableWithColor(R.drawable.ic_phone_two_vector, properPrimaryColor.getContrastColor())
-            dialpad_call_two_button.setImageDrawable(callIcon)
-            dialpad_call_two_button.background.applyColorFilter(properPrimaryColor)
-            dialpad_call_two_button.beVisible()
-            dialpad_call_two_button.setOnClickListener {
-                initCall(dialpad_input.value, 1)
+            binding.apply {
+                dialpadCallTwoButton.setImageDrawable(callIcon)
+                dialpadCallTwoButton.background.applyColorFilter(properPrimaryColor)
+                dialpadCallTwoButton.beVisible()
+                dialpadCallTwoButton.setOnClickListener {
+                    initCall(dialpadInput.value, 1)
+                }
             }
 
             R.drawable.ic_phone_one_vector
@@ -159,27 +170,29 @@ class DialpadActivity : SimpleActivity() {
             R.drawable.ic_phone_vector
         }
 
-        val callIcon = resources.getColoredDrawableWithColor(callIconId, properPrimaryColor.getContrastColor())
-        dialpad_call_button.setImageDrawable(callIcon)
-        dialpad_call_button.background.applyColorFilter(properPrimaryColor)
+        binding.apply {
+            val callIcon = resources.getColoredDrawableWithColor(callIconId, properPrimaryColor.getContrastColor())
+            dialpadCallButton.setImageDrawable(callIcon)
+            dialpadCallButton.background.applyColorFilter(properPrimaryColor)
 
-        letter_fastscroller.textColor = getProperTextColor().getColorStateList()
-        letter_fastscroller.pressedTextColor = properPrimaryColor
-        letter_fastscroller_thumb.setupWithFastScroller(letter_fastscroller)
-        letter_fastscroller_thumb.textColor = properPrimaryColor.getContrastColor()
-        letter_fastscroller_thumb.thumbColor = properPrimaryColor.getColorStateList()
+            letterFastscroller.textColor = getProperTextColor().getColorStateList()
+            letterFastscroller.pressedTextColor = properPrimaryColor
+            letterFastscrollerThumb.setupWithFastScroller(letterFastscroller)
+            letterFastscrollerThumb.textColor = properPrimaryColor.getContrastColor()
+            letterFastscrollerThumb.thumbColor = properPrimaryColor.getColorStateList()
+        }
     }
 
     override fun onResume() {
         super.onResume()
-        updateTextColors(dialpad_holder)
-        dialpad_clear_char.applyColorFilter(getProperTextColor())
+        updateTextColors(binding.dialpadHolder)
+        binding.dialpadClearChar.applyColorFilter(getProperTextColor())
         updateNavigationBarColor(getProperBackgroundColor())
-        setupToolbar(dialpad_toolbar, NavigationIcon.Arrow)
+        setupToolbar(binding.dialpadToolbar, NavigationIcon.Arrow)
     }
 
     private fun setupOptionsMenu() {
-        dialpad_toolbar.setOnMenuItemClickListener { menuItem ->
+        binding.dialpadToolbar.setOnMenuItemClickListener { menuItem ->
             when (menuItem.itemId) {
                 R.id.add_number_to_contact -> addNumberToContact()
                 else -> return@setOnMenuItemClickListener false
@@ -191,8 +204,8 @@ class DialpadActivity : SimpleActivity() {
     private fun checkDialIntent(): Boolean {
         return if ((intent.action == Intent.ACTION_DIAL || intent.action == Intent.ACTION_VIEW) && intent.data != null && intent.dataString?.contains("tel:") == true) {
             val number = Uri.decode(intent.dataString).substringAfter("tel:")
-            dialpad_input.setText(number)
-            dialpad_input.setSelection(number.length)
+            binding.dialpadInput.setText(number)
+            binding.dialpadInput.setSelection(number.length)
             true
         } else {
             false
@@ -203,23 +216,23 @@ class DialpadActivity : SimpleActivity() {
         Intent().apply {
             action = Intent.ACTION_INSERT_OR_EDIT
             type = "vnd.android.cursor.item/contact"
-            putExtra(KEY_PHONE, dialpad_input.value)
+            putExtra(KEY_PHONE, binding.dialpadInput.value)
             launchActivityIntent(this)
         }
     }
 
     private fun dialpadPressed(char: Char, view: View?) {
-        dialpad_input.addCharacter(char)
+        binding.dialpadInput.addCharacter(char)
         maybePerformDialpadHapticFeedback(view)
     }
 
     private fun clearChar(view: View) {
-        dialpad_input.dispatchKeyEvent(dialpad_input.getKeyEvent(KeyEvent.KEYCODE_DEL))
+        binding.dialpadInput.dispatchKeyEvent(binding.dialpadInput.getKeyEvent(KeyEvent.KEYCODE_DEL))
         maybePerformDialpadHapticFeedback(view)
     }
 
     private fun clearInput() {
-        dialpad_input.setText("")
+        binding.dialpadInput.setText("")
     }
 
     private fun gotContacts(newContacts: ArrayList<Contact>) {
@@ -232,7 +245,7 @@ class DialpadActivity : SimpleActivity() {
         }
 
         runOnUiThread {
-            if (!checkDialIntent() && dialpad_input.value.isEmpty()) {
+            if (!checkDialIntent() && binding.dialpadInput.value.isEmpty()) {
                 dialpadValueChanged("")
             }
         }
@@ -256,7 +269,7 @@ class DialpadActivity : SimpleActivity() {
             return
         }
 
-        (dialpad_list.adapter as? ContactsAdapter)?.finishActMode()
+        (binding.dialpadList.adapter as? ContactsAdapter)?.finishActMode()
 
         val filtered = allContacts.filter {
             var convertedName = PhoneNumberUtils.convertKeypadLettersToDigits(it.name.normalizeString())
@@ -275,7 +288,7 @@ class DialpadActivity : SimpleActivity() {
             !it.doesContainPhoneNumber(text)
         }).toMutableList() as ArrayList<Contact>
 
-        letter_fastscroller.setupWithRecyclerView(dialpad_list, { position ->
+        binding.letterFastscroller.setupWithRecyclerView(binding.dialpadList, { position ->
             try {
                 val name = filtered[position].getNameToDisplay()
                 val character = if (name.isNotEmpty()) name.substring(0, 1) else ""
@@ -288,7 +301,7 @@ class DialpadActivity : SimpleActivity() {
         ContactsAdapter(
             activity = this,
             contacts = filtered,
-            recyclerView = dialpad_list,
+            recyclerView = binding.dialpadList,
             highlightText = text
         ) {
             val contact = it as Contact
@@ -300,21 +313,21 @@ class DialpadActivity : SimpleActivity() {
                 startCallIntent(contact.getPrimaryNumber() ?: return@ContactsAdapter)
             }
         }.apply {
-            dialpad_list.adapter = this
+            binding.dialpadList.adapter = this
         }
 
-        dialpad_placeholder.beVisibleIf(filtered.isEmpty())
-        dialpad_list.beVisibleIf(filtered.isNotEmpty())
+        binding.dialpadPlaceholder.beVisibleIf(filtered.isEmpty())
+        binding.dialpadList.beVisibleIf(filtered.isNotEmpty())
     }
 
     override fun onActivityResult(requestCode: Int, resultCode: Int, resultData: Intent?) {
         super.onActivityResult(requestCode, resultCode, resultData)
         if (requestCode == REQUEST_CODE_SET_DEFAULT_DIALER && isDefaultDialer()) {
-            dialpadValueChanged(dialpad_input.value)
+            dialpadValueChanged(binding.dialpadInput.value)
         }
     }
 
-    private fun initCall(number: String = dialpad_input.value, handleIndex: Int) {
+    private fun initCall(number: String = binding.dialpadInput.value, handleIndex: Int) {
         if (number.isNotEmpty()) {
             if (handleIndex != -1 && areMultipleSIMsAvailable()) {
                 if (config.showCallConfirmation) {
@@ -337,7 +350,7 @@ class DialpadActivity : SimpleActivity() {
     }
 
     private fun speedDial(id: Int): Boolean {
-        if (dialpad_input.value.length == 1) {
+        if (binding.dialpadInput.value.length == 1) {
             val speedDial = speedDialValues.firstOrNull { it.id == id }
             if (speedDial?.isValid() == true) {
                 initCall(speedDial.number, -1)
diff --git a/app/src/main/kotlin/com/simplemobiletools/dialer/activities/MainActivity.kt b/app/src/main/kotlin/com/simplemobiletools/dialer/activities/MainActivity.kt
index 0d9406a9..90528f2f 100644
--- a/app/src/main/kotlin/com/simplemobiletools/dialer/activities/MainActivity.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/dialer/activities/MainActivity.kt
@@ -28,20 +28,21 @@ import com.simplemobiletools.commons.models.contacts.Contact
 import com.simplemobiletools.dialer.BuildConfig
 import com.simplemobiletools.dialer.R
 import com.simplemobiletools.dialer.adapters.ViewPagerAdapter
+import com.simplemobiletools.dialer.databinding.ActivityMainBinding
 import com.simplemobiletools.dialer.dialogs.ChangeSortingDialog
 import com.simplemobiletools.dialer.dialogs.FilterContactSourcesDialog
 import com.simplemobiletools.dialer.extensions.config
 import com.simplemobiletools.dialer.extensions.launchCreateNewContactIntent
+import com.simplemobiletools.dialer.fragments.ContactsFragment
 import com.simplemobiletools.dialer.fragments.FavoritesFragment
 import com.simplemobiletools.dialer.fragments.MyViewPagerFragment
+import com.simplemobiletools.dialer.fragments.RecentsFragment
 import com.simplemobiletools.dialer.helpers.*
-import kotlinx.android.synthetic.main.activity_main.*
-import kotlinx.android.synthetic.main.fragment_contacts.*
-import kotlinx.android.synthetic.main.fragment_favorites.*
-import kotlinx.android.synthetic.main.fragment_recents.*
 import me.grantland.widget.AutofitHelper
 
 class MainActivity : SimpleActivity() {
+    private val binding by viewBinding(ActivityMainBinding::inflate)
+
     private var launchedDialer = false
     private var storedShowTabs = 0
     private var storedFontSize = 0
@@ -51,11 +52,11 @@ class MainActivity : SimpleActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         isMaterialActivity = true
         super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_main)
+        setContentView(binding.root)
         appLaunched(BuildConfig.APPLICATION_ID)
         setupOptionsMenu()
         refreshMenuItems()
-        updateMaterialActivityViews(main_coordinator, main_holder, useTransparentNavigation = false, useTopSearchMenu = true)
+        updateMaterialActivityViews(binding.mainCoordinator, binding.mainHolder, useTransparentNavigation = false, useTopSearchMenu = true)
 
         launchedDialer = savedInstanceState?.getBoolean(OPEN_DIAL_PAD_AT_LAUNCH) ?: false
 
@@ -63,7 +64,7 @@ class MainActivity : SimpleActivity() {
             checkContactPermissions()
 
             if (!config.wasOverlaySnackbarConfirmed && !Settings.canDrawOverlays(this)) {
-                val snackbar = Snackbar.make(main_holder, R.string.allow_displaying_over_other_apps, Snackbar.LENGTH_INDEFINITE).setAction(R.string.ok) {
+                val snackbar = Snackbar.make(binding.mainHolder, R.string.allow_displaying_over_other_apps, Snackbar.LENGTH_INDEFINITE).setAction(R.string.ok) {
                     config.wasOverlaySnackbarConfirmed = true
                     startActivity(Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION))
                 }
@@ -102,9 +103,9 @@ class MainActivity : SimpleActivity() {
         updateMenuColors()
         val properPrimaryColor = getProperPrimaryColor()
         val dialpadIcon = resources.getColoredDrawableWithColor(R.drawable.ic_dialpad_vector, properPrimaryColor.getContrastColor())
-        main_dialpad_button.setImageDrawable(dialpadIcon)
+        binding.mainDialpadButton.setImageDrawable(dialpadIcon)
 
-        updateTextColors(main_holder)
+        updateTextColors(binding.mainHolder)
         setupTabColors()
 
         getAllFragments().forEach {
@@ -113,12 +114,12 @@ class MainActivity : SimpleActivity() {
 
         val configStartNameWithSurname = config.startNameWithSurname
         if (storedStartNameWithSurname != configStartNameWithSurname) {
-            contacts_fragment?.startNameWithSurnameChanged(configStartNameWithSurname)
-            favorites_fragment?.startNameWithSurnameChanged(configStartNameWithSurname)
+            getContactsFragment()?.startNameWithSurnameChanged(configStartNameWithSurname)
+            getFavoritesFragment()?.startNameWithSurnameChanged(configStartNameWithSurname)
             storedStartNameWithSurname = config.startNameWithSurname
         }
 
-        if (!main_menu.isSearchOpen) {
+        if (!binding.mainMenu.isSearchOpen) {
             refreshItems(true)
         }
 
@@ -131,7 +132,7 @@ class MainActivity : SimpleActivity() {
 
         checkShortcuts()
         Handler().postDelayed({
-            recents_fragment?.refreshItems()
+            getRecentsFragment()?.refreshItems()
         }, 2000)
     }
 
@@ -139,7 +140,7 @@ class MainActivity : SimpleActivity() {
         super.onPause()
         storedShowTabs = config.showTabs
         storedStartNameWithSurname = config.startNameWithSurname
-        config.lastUsedViewPagerPage = view_pager.currentItem
+        config.lastUsedViewPagerPage = binding.viewPager.currentItem
     }
 
     override fun onActivityResult(requestCode: Int, resultCode: Int, resultData: Intent?) {
@@ -165,8 +166,8 @@ class MainActivity : SimpleActivity() {
     }
 
     override fun onBackPressed() {
-        if (main_menu.isSearchOpen) {
-            main_menu.closeSearch()
+        if (binding.mainMenu.isSearchOpen) {
+            binding.mainMenu.closeSearch()
         } else {
             super.onBackPressed()
         }
@@ -174,45 +175,47 @@ class MainActivity : SimpleActivity() {
 
     private fun refreshMenuItems() {
         val currentFragment = getCurrentFragment()
-        main_menu.getToolbar().menu.apply {
-            findItem(R.id.clear_call_history).isVisible = currentFragment == recents_fragment
-            findItem(R.id.sort).isVisible = currentFragment != recents_fragment
-            findItem(R.id.create_new_contact).isVisible = currentFragment == contacts_fragment
-            findItem(R.id.change_view_type).isVisible = currentFragment == favorites_fragment
-            findItem(R.id.column_count).isVisible = currentFragment == favorites_fragment && config.viewType == VIEW_TYPE_GRID
+        binding.mainMenu.getToolbar().menu.apply {
+            findItem(R.id.clear_call_history).isVisible = currentFragment == getRecentsFragment()
+            findItem(R.id.sort).isVisible = currentFragment != getRecentsFragment()
+            findItem(R.id.create_new_contact).isVisible = currentFragment == getContactsFragment()
+            findItem(R.id.change_view_type).isVisible = currentFragment == getFavoritesFragment()
+            findItem(R.id.column_count).isVisible = currentFragment == getFavoritesFragment() && config.viewType == VIEW_TYPE_GRID
             findItem(R.id.more_apps_from_us).isVisible = !resources.getBoolean(R.bool.hide_google_relations)
         }
     }
 
     private fun setupOptionsMenu() {
-        main_menu.getToolbar().inflateMenu(R.menu.menu)
-        main_menu.toggleHideOnScroll(false)
-        main_menu.setupMenu()
+        binding.mainMenu.apply {
+            getToolbar().inflateMenu(R.menu.menu)
+            toggleHideOnScroll(false)
+            setupMenu()
 
-        main_menu.onSearchClosedListener = {
-            getAllFragments().forEach {
-                it?.onSearchQueryChanged("")
+            onSearchClosedListener = {
+                getAllFragments().forEach {
+                    it?.onSearchQueryChanged("")
+                }
             }
-        }
 
-        main_menu.onSearchTextChangedListener = { text ->
-            getCurrentFragment()?.onSearchQueryChanged(text)
-        }
-
-        main_menu.getToolbar().setOnMenuItemClickListener { menuItem ->
-            when (menuItem.itemId) {
-                R.id.clear_call_history -> clearCallHistory()
-                R.id.create_new_contact -> launchCreateNewContactIntent()
-                R.id.sort -> showSortingDialog(showCustomSorting = getCurrentFragment() is FavoritesFragment)
-                R.id.filter -> showFilterDialog()
-                R.id.more_apps_from_us -> launchMoreAppsFromUsIntent()
-                R.id.settings -> launchSettings()
-                R.id.change_view_type -> changeViewType()
-                R.id.column_count -> changeColumnCount()
-                R.id.about -> launchAbout()
-                else -> return@setOnMenuItemClickListener false
+            onSearchTextChangedListener = { text ->
+                getCurrentFragment()?.onSearchQueryChanged(text)
+            }
+
+            getToolbar().setOnMenuItemClickListener { menuItem ->
+                when (menuItem.itemId) {
+                    R.id.clear_call_history -> clearCallHistory()
+                    R.id.create_new_contact -> launchCreateNewContactIntent()
+                    R.id.sort -> showSortingDialog(showCustomSorting = getCurrentFragment() is FavoritesFragment)
+                    R.id.filter -> showFilterDialog()
+                    R.id.more_apps_from_us -> launchMoreAppsFromUsIntent()
+                    R.id.settings -> launchSettings()
+                    R.id.change_view_type -> changeViewType()
+                    R.id.column_count -> changeColumnCount()
+                    R.id.about -> launchAbout()
+                    else -> return@setOnMenuItemClickListener false
+                }
+                return@setOnMenuItemClickListener true
             }
-            return@setOnMenuItemClickListener true
         }
     }
 
@@ -227,7 +230,7 @@ class MainActivity : SimpleActivity() {
             val newColumnCount = it as Int
             if (currentColumnCount != newColumnCount) {
                 config.contactsGridColumnCount = newColumnCount
-                favorites_fragment?.columnCountChanged()
+                getFavoritesFragment()?.columnCountChanged()
             }
         }
     }
@@ -235,13 +238,13 @@ class MainActivity : SimpleActivity() {
     private fun changeViewType() {
         ChangeViewTypeDialog(this) {
             refreshMenuItems()
-            favorites_fragment?.refreshItems()
+            getFavoritesFragment()?.refreshItems()
         }
     }
 
     private fun updateMenuColors() {
         updateStatusbarColor(getProperBackgroundColor())
-        main_menu.updateColors()
+        binding.mainMenu.updateColors()
     }
 
     private fun checkContactPermissions() {
@@ -255,7 +258,7 @@ class MainActivity : SimpleActivity() {
         ConfirmationDialog(this, confirmationText) {
             RecentsHelper(this).removeAllRecentCalls(this) {
                 runOnUiThread {
-                    recents_fragment?.refreshItems()
+                    getRecentsFragment()?.refreshItems()
                 }
             }
         }
@@ -293,20 +296,20 @@ class MainActivity : SimpleActivity() {
     }
 
     private fun setupTabColors() {
-        val activeView = main_tabs_holder.getTabAt(view_pager.currentItem)?.customView
-        updateBottomTabItemColors(activeView, true, getSelectedTabDrawableIds()[view_pager.currentItem])
+        val activeView = binding.mainTabsHolder.getTabAt(binding.viewPager.currentItem)?.customView
+        updateBottomTabItemColors(activeView, true, getSelectedTabDrawableIds()[binding.viewPager.currentItem])
 
-        getInactiveTabIndexes(view_pager.currentItem).forEach { index ->
-            val inactiveView = main_tabs_holder.getTabAt(index)?.customView
+        getInactiveTabIndexes(binding.viewPager.currentItem).forEach { index ->
+            val inactiveView = binding.mainTabsHolder.getTabAt(index)?.customView
             updateBottomTabItemColors(inactiveView, false, getDeselectedTabDrawableIds()[index])
         }
 
         val bottomBarColor = getBottomNavigationBackgroundColor()
-        main_tabs_holder.setBackgroundColor(bottomBarColor)
+        binding.mainTabsHolder.setBackgroundColor(bottomBarColor)
         updateNavigationBarColor(bottomBarColor)
     }
 
-    private fun getInactiveTabIndexes(activeIndex: Int) = (0 until main_tabs_holder.tabCount).filter { it != activeIndex }
+    private fun getInactiveTabIndexes(activeIndex: Int) = (0 until binding.mainTabsHolder.tabCount).filter { it != activeIndex }
 
     private fun getSelectedTabDrawableIds(): List<Int> {
         val showTabs = config.showTabs
@@ -347,14 +350,14 @@ class MainActivity : SimpleActivity() {
     }
 
     private fun initFragments() {
-        view_pager.offscreenPageLimit = 2
-        view_pager.addOnPageChangeListener(object : ViewPager.OnPageChangeListener {
+        binding.viewPager.offscreenPageLimit = 2
+        binding.viewPager.addOnPageChangeListener(object : ViewPager.OnPageChangeListener {
             override fun onPageScrollStateChanged(state: Int) {}
 
             override fun onPageScrolled(position: Int, positionOffset: Float, positionOffsetPixels: Int) {}
 
             override fun onPageSelected(position: Int) {
-                main_tabs_holder.getTabAt(position)?.select()
+                binding.mainTabsHolder.getTabAt(position)?.select()
                 getAllFragments().forEach {
                     it?.finishActMode()
                 }
@@ -363,29 +366,29 @@ class MainActivity : SimpleActivity() {
         })
 
         // selecting the proper tab sometimes glitches, add an extra selector to make sure we have it right
-        main_tabs_holder.onGlobalLayout {
+        binding.mainTabsHolder.onGlobalLayout {
             Handler().postDelayed({
                 var wantedTab = getDefaultTab()
 
                 // open the Recents tab if we got here by clicking a missed call notification
                 if (intent.action == Intent.ACTION_VIEW && config.showTabs and TAB_CALL_HISTORY > 0) {
-                    wantedTab = main_tabs_holder.tabCount - 1
+                    wantedTab = binding.mainTabsHolder.tabCount - 1
 
                     ensureBackgroundThread {
                         clearMissedCalls()
                     }
                 }
 
-                main_tabs_holder.getTabAt(wantedTab)?.select()
+                binding.mainTabsHolder.getTabAt(wantedTab)?.select()
                 refreshMenuItems()
             }, 100L)
         }
 
-        main_dialpad_button.setOnClickListener {
+        binding.mainDialpadButton.setOnClickListener {
             launchDialpad()
         }
 
-        view_pager.onGlobalLayout {
+        binding.viewPager.onGlobalLayout {
             refreshMenuItems()
         }
 
@@ -396,31 +399,31 @@ class MainActivity : SimpleActivity() {
     }
 
     private fun setupTabs() {
-        view_pager.adapter = null
-        main_tabs_holder.removeAllTabs()
+        binding.viewPager.adapter = null
+        binding.mainTabsHolder.removeAllTabs()
         tabsList.forEachIndexed { index, value ->
             if (config.showTabs and value != 0) {
-                main_tabs_holder.newTab().setCustomView(R.layout.bottom_tablayout_item).apply {
+                binding.mainTabsHolder.newTab().setCustomView(R.layout.bottom_tablayout_item).apply {
                     customView?.findViewById<ImageView>(R.id.tab_item_icon)?.setImageDrawable(getTabIcon(index))
                     customView?.findViewById<TextView>(R.id.tab_item_label)?.text = getTabLabel(index)
                     AutofitHelper.create(customView?.findViewById(R.id.tab_item_label))
-                    main_tabs_holder.addTab(this)
+                    binding.mainTabsHolder.addTab(this)
                 }
             }
         }
 
-        main_tabs_holder.onTabSelectionChanged(
+        binding.mainTabsHolder.onTabSelectionChanged(
             tabUnselectedAction = {
                 updateBottomTabItemColors(it.customView, false, getDeselectedTabDrawableIds()[it.position])
             },
             tabSelectedAction = {
-                main_menu.closeSearch()
-                view_pager.currentItem = it.position
+                binding.mainMenu.closeSearch()
+                binding.viewPager.currentItem = it.position
                 updateBottomTabItemColors(it.customView, true, getSelectedTabDrawableIds()[it.position])
             }
         )
 
-        main_tabs_holder.beGoneIf(main_tabs_holder.tabCount == 1)
+        binding.mainTabsHolder.beGoneIf(binding.mainTabsHolder.tabCount == 1)
         storedShowTabs = config.showTabs
         storedStartNameWithSurname = config.startNameWithSurname
     }
@@ -450,14 +453,16 @@ class MainActivity : SimpleActivity() {
             return
         }
 
-        if (view_pager.adapter == null) {
-            view_pager.adapter = ViewPagerAdapter(this)
-            view_pager.currentItem = if (openLastTab) config.lastUsedViewPagerPage else getDefaultTab()
-            view_pager.onGlobalLayout {
+        binding.apply {
+            if (viewPager.adapter == null) {
+                viewPager.adapter = ViewPagerAdapter(this@MainActivity)
+                viewPager.currentItem = if (openLastTab) config.lastUsedViewPagerPage else getDefaultTab()
+                viewPager.onGlobalLayout {
+                    refreshFragments()
+                }
+            } else {
                 refreshFragments()
             }
-        } else {
-            refreshFragments()
         }
     }
 
@@ -468,36 +473,42 @@ class MainActivity : SimpleActivity() {
     }
 
     fun refreshFragments() {
-        contacts_fragment?.refreshItems()
-        favorites_fragment?.refreshItems()
-        recents_fragment?.refreshItems()
+        getContactsFragment()?.refreshItems()
+        getFavoritesFragment()?.refreshItems()
+        getRecentsFragment()?.refreshItems()
     }
 
-    private fun getAllFragments(): ArrayList<MyViewPagerFragment?> {
+    private fun getAllFragments(): ArrayList<MyViewPagerFragment<*>?> {
         val showTabs = config.showTabs
-        val fragments = arrayListOf<MyViewPagerFragment?>()
+        val fragments = arrayListOf<MyViewPagerFragment<*>?>()
 
         if (showTabs and TAB_CONTACTS > 0) {
-            fragments.add(contacts_fragment)
+            fragments.add(getContactsFragment())
         }
 
         if (showTabs and TAB_FAVORITES > 0) {
-            fragments.add(favorites_fragment)
+            fragments.add(getFavoritesFragment())
         }
 
         if (showTabs and TAB_CALL_HISTORY > 0) {
-            fragments.add(recents_fragment)
+            fragments.add(getRecentsFragment())
         }
 
         return fragments
     }
 
-    private fun getCurrentFragment(): MyViewPagerFragment? = getAllFragments().getOrNull(view_pager.currentItem)
+    private fun getCurrentFragment(): MyViewPagerFragment<*>? = getAllFragments().getOrNull(binding.viewPager.currentItem)
+
+    private fun getContactsFragment(): ContactsFragment? = findViewById(R.id.contacts_fragment)
+
+    private fun getFavoritesFragment(): FavoritesFragment? = findViewById(R.id.favorites_fragment)
+
+    private fun getRecentsFragment(): RecentsFragment? = findViewById(R.id.recents_fragment)
 
     private fun getDefaultTab(): Int {
         val showTabsMask = config.showTabs
         return when (config.defaultTab) {
-            TAB_LAST_USED -> if (config.lastUsedViewPagerPage < main_tabs_holder.tabCount) config.lastUsedViewPagerPage else 0
+            TAB_LAST_USED -> if (config.lastUsedViewPagerPage < binding.mainTabsHolder.tabCount) config.lastUsedViewPagerPage else 0
             TAB_CONTACTS -> 0
             TAB_FAVORITES -> if (showTabsMask and TAB_CONTACTS > 0) 1 else 0
             else -> {
@@ -556,15 +567,15 @@ class MainActivity : SimpleActivity() {
 
     private fun showSortingDialog(showCustomSorting: Boolean) {
         ChangeSortingDialog(this, showCustomSorting) {
-            favorites_fragment?.refreshItems {
-                if (main_menu.isSearchOpen) {
-                    getCurrentFragment()?.onSearchQueryChanged(main_menu.getCurrentQuery())
+            getFavoritesFragment()?.refreshItems {
+                if (binding.mainMenu.isSearchOpen) {
+                    getCurrentFragment()?.onSearchQueryChanged(binding.mainMenu.getCurrentQuery())
                 }
             }
 
-            contacts_fragment?.refreshItems {
-                if (main_menu.isSearchOpen) {
-                    getCurrentFragment()?.onSearchQueryChanged(main_menu.getCurrentQuery())
+            getContactsFragment()?.refreshItems {
+                if (binding.mainMenu.isSearchOpen) {
+                    getCurrentFragment()?.onSearchQueryChanged(binding.mainMenu.getCurrentQuery())
                 }
             }
         }
@@ -572,21 +583,21 @@ class MainActivity : SimpleActivity() {
 
     private fun showFilterDialog() {
         FilterContactSourcesDialog(this) {
-            favorites_fragment?.refreshItems {
-                if (main_menu.isSearchOpen) {
-                    getCurrentFragment()?.onSearchQueryChanged(main_menu.getCurrentQuery())
+            getFavoritesFragment()?.refreshItems {
+                if (binding.mainMenu.isSearchOpen) {
+                    getCurrentFragment()?.onSearchQueryChanged(binding.mainMenu.getCurrentQuery())
                 }
             }
 
-            contacts_fragment?.refreshItems {
-                if (main_menu.isSearchOpen) {
-                    getCurrentFragment()?.onSearchQueryChanged(main_menu.getCurrentQuery())
+            getContactsFragment()?.refreshItems {
+                if (binding.mainMenu.isSearchOpen) {
+                    getCurrentFragment()?.onSearchQueryChanged(binding.mainMenu.getCurrentQuery())
                 }
             }
 
-            recents_fragment?.refreshItems {
-                if (main_menu.isSearchOpen) {
-                    getCurrentFragment()?.onSearchQueryChanged(main_menu.getCurrentQuery())
+            getRecentsFragment()?.refreshItems {
+                if (binding.mainMenu.isSearchOpen) {
+                    getCurrentFragment()?.onSearchQueryChanged(binding.mainMenu.getCurrentQuery())
                 }
             }
         }
diff --git a/app/src/main/kotlin/com/simplemobiletools/dialer/activities/ManageSpeedDialActivity.kt b/app/src/main/kotlin/com/simplemobiletools/dialer/activities/ManageSpeedDialActivity.kt
index c4d5aefc..2e7959fc 100644
--- a/app/src/main/kotlin/com/simplemobiletools/dialer/activities/ManageSpeedDialActivity.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/dialer/activities/ManageSpeedDialActivity.kt
@@ -5,31 +5,36 @@ import com.google.gson.Gson
 import com.simplemobiletools.commons.dialogs.RadioGroupDialog
 import com.simplemobiletools.commons.extensions.getMyContactsCursor
 import com.simplemobiletools.commons.extensions.updateTextColors
+import com.simplemobiletools.commons.extensions.viewBinding
 import com.simplemobiletools.commons.helpers.ContactsHelper
 import com.simplemobiletools.commons.helpers.MyContactsContentProvider
 import com.simplemobiletools.commons.helpers.NavigationIcon
 import com.simplemobiletools.commons.models.PhoneNumber
 import com.simplemobiletools.commons.models.RadioItem
 import com.simplemobiletools.commons.models.contacts.Contact
-import com.simplemobiletools.dialer.R
 import com.simplemobiletools.dialer.adapters.SpeedDialAdapter
+import com.simplemobiletools.dialer.databinding.ActivityManageSpeedDialBinding
 import com.simplemobiletools.dialer.dialogs.SelectContactDialog
 import com.simplemobiletools.dialer.extensions.config
 import com.simplemobiletools.dialer.interfaces.RemoveSpeedDialListener
 import com.simplemobiletools.dialer.models.SpeedDial
-import kotlinx.android.synthetic.main.activity_manage_speed_dial.*
 
 class ManageSpeedDialActivity : SimpleActivity(), RemoveSpeedDialListener {
+    private val binding by viewBinding(ActivityManageSpeedDialBinding::inflate)
+
     private var allContacts = mutableListOf<Contact>()
     private var speedDialValues = mutableListOf<SpeedDial>()
 
     override fun onCreate(savedInstanceState: Bundle?) {
         isMaterialActivity = true
         super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_manage_speed_dial)
+        setContentView(binding.root)
 
-        updateMaterialActivityViews(manage_speed_dial_coordinator, manage_speed_dial_holder, useTransparentNavigation = true, useTopSearchMenu = false)
-        setupMaterialScrollListener(manage_speed_dial_scrollview, manage_speed_dial_toolbar)
+        binding.apply {
+            updateMaterialActivityViews(manageSpeedDialCoordinator, manageSpeedDialHolder, useTransparentNavigation = true, useTopSearchMenu = false)
+            setupMaterialScrollListener(manageSpeedDialScrollview, manageSpeedDialToolbar)
+
+        }
 
         speedDialValues = config.getSpeedDialValues()
         updateAdapter()
@@ -43,12 +48,12 @@ class ManageSpeedDialActivity : SimpleActivity(), RemoveSpeedDialListener {
             allContacts.sort()
         }
 
-        updateTextColors(manage_speed_dial_scrollview)
+        updateTextColors(binding.manageSpeedDialScrollview)
     }
 
     override fun onResume() {
         super.onResume()
-        setupToolbar(manage_speed_dial_toolbar, NavigationIcon.Arrow)
+        setupToolbar(binding.manageSpeedDialToolbar, NavigationIcon.Arrow)
     }
 
     override fun onStop() {
@@ -57,7 +62,7 @@ class ManageSpeedDialActivity : SimpleActivity(), RemoveSpeedDialListener {
     }
 
     private fun updateAdapter() {
-        SpeedDialAdapter(this, speedDialValues, this, speed_dial_list) {
+        SpeedDialAdapter(this, speedDialValues, this, binding.speedDialList) {
             val clickedContact = it as SpeedDial
             if (allContacts.isEmpty()) {
                 return@SpeedDialAdapter
@@ -88,7 +93,7 @@ class ManageSpeedDialActivity : SimpleActivity(), RemoveSpeedDialListener {
 
             }
         }.apply {
-            speed_dial_list.adapter = this
+            binding.speedDialList.adapter = this
         }
     }
 
diff --git a/app/src/main/kotlin/com/simplemobiletools/dialer/activities/SettingsActivity.kt b/app/src/main/kotlin/com/simplemobiletools/dialer/activities/SettingsActivity.kt
index db6cf531..cc130cc5 100644
--- a/app/src/main/kotlin/com/simplemobiletools/dialer/activities/SettingsActivity.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/dialer/activities/SettingsActivity.kt
@@ -15,23 +15,24 @@ import com.simplemobiletools.commons.extensions.*
 import com.simplemobiletools.commons.helpers.*
 import com.simplemobiletools.commons.models.RadioItem
 import com.simplemobiletools.dialer.R
+import com.simplemobiletools.dialer.databinding.ActivitySettingsBinding
 import com.simplemobiletools.dialer.dialogs.ExportCallHistoryDialog
 import com.simplemobiletools.dialer.dialogs.ManageVisibleTabsDialog
 import com.simplemobiletools.dialer.extensions.config
 import com.simplemobiletools.dialer.helpers.RecentsHelper
 import com.simplemobiletools.dialer.models.RecentCall
-import kotlinx.android.synthetic.main.activity_settings.*
 import kotlinx.serialization.SerializationException
-import kotlinx.serialization.decodeFromString
 import kotlinx.serialization.encodeToString
 import kotlinx.serialization.json.Json
 import java.util.*
 import kotlin.system.exitProcess
 
 class SettingsActivity : SimpleActivity() {
+    companion object {
+        private const val CALL_HISTORY_FILE_TYPE = "application/json"
+    }
 
-    private val callHistoryFileType = "application/json"
-
+    private val binding by viewBinding(ActivitySettingsBinding::inflate)
     private val getContent = registerForActivityResult(ActivityResultContracts.GetContent()) { uri ->
         if (uri != null) {
             toast(R.string.importing)
@@ -39,7 +40,7 @@ class SettingsActivity : SimpleActivity() {
         }
     }
 
-    private val saveDocument = registerForActivityResult(ActivityResultContracts.CreateDocument(callHistoryFileType)) { uri ->
+    private val saveDocument = registerForActivityResult(ActivityResultContracts.CreateDocument(CALL_HISTORY_FILE_TYPE)) { uri ->
         if (uri != null) {
             toast(R.string.exporting)
             RecentsHelper(this).getRecentCalls(false, Int.MAX_VALUE) { recents ->
@@ -51,15 +52,17 @@ class SettingsActivity : SimpleActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         isMaterialActivity = true
         super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_settings)
+        setContentView(binding.root)
 
-        updateMaterialActivityViews(settings_coordinator, settings_holder, useTransparentNavigation = true, useTopSearchMenu = false)
-        setupMaterialScrollListener(settings_nested_scrollview, settings_toolbar)
+        binding.apply {
+            updateMaterialActivityViews(settingsCoordinator, settingsHolder, useTransparentNavigation = true, useTopSearchMenu = false)
+            setupMaterialScrollListener(settingsNestedScrollview, settingsToolbar)
+        }
     }
 
     override fun onResume() {
         super.onResume()
-        setupToolbar(settings_toolbar, NavigationIcon.Arrow)
+        setupToolbar(binding.settingsToolbar, NavigationIcon.Arrow)
 
         setupPurchaseThankYou()
         setupCustomizeColors()
@@ -83,16 +86,18 @@ class SettingsActivity : SimpleActivity() {
         setupAlwaysShowFullscreen()
         setupCallsExport()
         setupCallsImport()
-        updateTextColors(settings_holder)
+        updateTextColors(binding.settingsHolder)
 
-        arrayOf(
-            settings_color_customization_section_label,
-            settings_general_settings_label,
-            settings_startup_label,
-            settings_calls_label,
-            settings_migration_section_label
-        ).forEach {
-            it.setTextColor(getProperPrimaryColor())
+        binding.apply {
+            arrayOf(
+                settingsColorCustomizationSectionLabel,
+                settingsGeneralSettingsLabel,
+                settingsStartupLabel,
+                settingsCallsLabel,
+                settingsMigrationSectionLabel
+            ).forEach {
+                it.setTextColor(getProperPrimaryColor())
+            }
         }
     }
 
@@ -102,55 +107,61 @@ class SettingsActivity : SimpleActivity() {
     }
 
     private fun setupPurchaseThankYou() {
-        settings_purchase_thank_you_holder.beGoneIf(isOrWasThankYouInstalled())
-        settings_purchase_thank_you_holder.setOnClickListener {
+        binding.settingsPurchaseThankYouHolder.beGoneIf(isOrWasThankYouInstalled())
+        binding.settingsPurchaseThankYouHolder.setOnClickListener {
             launchPurchaseThankYouIntent()
         }
     }
 
     private fun setupCustomizeColors() {
-        settings_color_customization_label.text = getCustomizeColorsString()
-        settings_color_customization_holder.setOnClickListener {
+        binding.settingsColorCustomizationLabel.text = getCustomizeColorsString()
+        binding.settingsColorCustomizationHolder.setOnClickListener {
             handleCustomizeColorsClick()
         }
     }
 
     private fun setupUseEnglish() {
-        settings_use_english_holder.beVisibleIf((config.wasUseEnglishToggled || Locale.getDefault().language != "en") && !isTiramisuPlus())
-        settings_use_english.isChecked = config.useEnglish
-        settings_use_english_holder.setOnClickListener {
-            settings_use_english.toggle()
-            config.useEnglish = settings_use_english.isChecked
-            exitProcess(0)
+        binding.apply {
+            settingsUseEnglishHolder.beVisibleIf((config.wasUseEnglishToggled || Locale.getDefault().language != "en") && !isTiramisuPlus())
+            settingsUseEnglish.isChecked = config.useEnglish
+            settingsUseEnglishHolder.setOnClickListener {
+                settingsUseEnglish.toggle()
+                config.useEnglish = settingsUseEnglish.isChecked
+                exitProcess(0)
+            }
         }
     }
 
     private fun setupLanguage() {
-        settings_language.text = Locale.getDefault().displayLanguage
-        settings_language_holder.beVisibleIf(isTiramisuPlus())
-        settings_language_holder.setOnClickListener {
-            launchChangeAppLanguageIntent()
+        binding.apply {
+            settingsLanguage.text = Locale.getDefault().displayLanguage
+            settingsLanguageHolder.beVisibleIf(isTiramisuPlus())
+            settingsLanguageHolder.setOnClickListener {
+                launchChangeAppLanguageIntent()
+            }
         }
     }
 
     // support for device-wise blocking came on Android 7, rely only on that
     @TargetApi(Build.VERSION_CODES.N)
     private fun setupManageBlockedNumbers() {
-        settings_manage_blocked_numbers_label.text = addLockedLabelIfNeeded(R.string.manage_blocked_numbers)
-        settings_manage_blocked_numbers_holder.beVisibleIf(isNougatPlus())
-        settings_manage_blocked_numbers_holder.setOnClickListener {
-            if (isOrWasThankYouInstalled()) {
-                Intent(this, ManageBlockedNumbersActivity::class.java).apply {
-                    startActivity(this)
+        binding.apply {
+            settingsManageBlockedNumbersLabel.text = addLockedLabelIfNeeded(R.string.manage_blocked_numbers)
+            settingsManageBlockedNumbersHolder.beVisibleIf(isNougatPlus())
+            settingsManageBlockedNumbersHolder.setOnClickListener {
+                if (isOrWasThankYouInstalled()) {
+                    Intent(this@SettingsActivity, ManageBlockedNumbersActivity::class.java).apply {
+                        startActivity(this)
+                    }
+                } else {
+                    FeatureLockedDialog(this@SettingsActivity) { }
                 }
-            } else {
-                FeatureLockedDialog(this) { }
             }
         }
     }
 
     private fun setupManageSpeedDial() {
-        settings_manage_speed_dial_holder.setOnClickListener {
+        binding.settingsManageSpeedDialHolder.setOnClickListener {
             Intent(this, ManageSpeedDialActivity::class.java).apply {
                 startActivity(this)
             }
@@ -158,14 +169,14 @@ class SettingsActivity : SimpleActivity() {
     }
 
     private fun setupChangeDateTimeFormat() {
-        settings_change_date_time_format_holder.setOnClickListener {
+        binding.settingsChangeDateTimeFormatHolder.setOnClickListener {
             ChangeDateTimeFormatDialog(this) {}
         }
     }
 
     private fun setupFontSize() {
-        settings_font_size.text = getFontSizeText()
-        settings_font_size_holder.setOnClickListener {
+        binding.settingsFontSize.text = getFontSizeText()
+        binding.settingsFontSizeHolder.setOnClickListener {
             val items = arrayListOf(
                 RadioItem(FONT_SIZE_SMALL, getString(R.string.small)),
                 RadioItem(FONT_SIZE_MEDIUM, getString(R.string.medium)),
@@ -175,20 +186,20 @@ class SettingsActivity : SimpleActivity() {
 
             RadioGroupDialog(this@SettingsActivity, items, config.fontSize) {
                 config.fontSize = it as Int
-                settings_font_size.text = getFontSizeText()
+                binding.settingsFontSize.text = getFontSizeText()
             }
         }
     }
 
     private fun setupManageShownTabs() {
-        settings_manage_tabs_holder.setOnClickListener {
+        binding.settingsManageTabsHolder.setOnClickListener {
             ManageVisibleTabsDialog(this)
         }
     }
 
     private fun setupDefaultTab() {
-        settings_default_tab.text = getDefaultTabText()
-        settings_default_tab_holder.setOnClickListener {
+        binding.settingsDefaultTab.text = getDefaultTabText()
+        binding.settingsDefaultTabHolder.setOnClickListener {
             val items = arrayListOf(
                 RadioItem(TAB_CONTACTS, getString(R.string.contacts_tab)),
                 RadioItem(TAB_FAVORITES, getString(R.string.favorites_tab)),
@@ -198,7 +209,7 @@ class SettingsActivity : SimpleActivity() {
 
             RadioGroupDialog(this@SettingsActivity, items, config.defaultTab) {
                 config.defaultTab = it as Int
-                settings_default_tab.text = getDefaultTabText()
+                binding.settingsDefaultTab.text = getDefaultTabText()
             }
         }
     }
@@ -213,87 +224,107 @@ class SettingsActivity : SimpleActivity() {
     )
 
     private fun setupDialPadOpen() {
-        settings_open_dialpad_at_launch.isChecked = config.openDialPadAtLaunch
-        settings_open_dialpad_at_launch_holder.setOnClickListener {
-            settings_open_dialpad_at_launch.toggle()
-            config.openDialPadAtLaunch = settings_open_dialpad_at_launch.isChecked
+        binding.apply {
+            settingsOpenDialpadAtLaunch.isChecked = config.openDialPadAtLaunch
+            settingsOpenDialpadAtLaunchHolder.setOnClickListener {
+                settingsOpenDialpadAtLaunch.toggle()
+                config.openDialPadAtLaunch = settingsOpenDialpadAtLaunch.isChecked
+            }
         }
     }
 
     private fun setupGroupSubsequentCalls() {
-        settings_group_subsequent_calls.isChecked = config.groupSubsequentCalls
-        settings_group_subsequent_calls_holder.setOnClickListener {
-            settings_group_subsequent_calls.toggle()
-            config.groupSubsequentCalls = settings_group_subsequent_calls.isChecked
+        binding.apply {
+            settingsGroupSubsequentCalls.isChecked = config.groupSubsequentCalls
+            settingsGroupSubsequentCallsHolder.setOnClickListener {
+                settingsGroupSubsequentCalls.toggle()
+                config.groupSubsequentCalls = settingsGroupSubsequentCalls.isChecked
+            }
         }
     }
 
     private fun setupStartNameWithSurname() {
-        settings_start_name_with_surname.isChecked = config.startNameWithSurname
-        settings_start_name_with_surname_holder.setOnClickListener {
-            settings_start_name_with_surname.toggle()
-            config.startNameWithSurname = settings_start_name_with_surname.isChecked
+        binding.apply {
+            settingsStartNameWithSurname.isChecked = config.startNameWithSurname
+            settingsStartNameWithSurnameHolder.setOnClickListener {
+                settingsStartNameWithSurname.toggle()
+                config.startNameWithSurname = settingsStartNameWithSurname.isChecked
+            }
         }
     }
 
     private fun setupDialpadVibrations() {
-        settings_dialpad_vibration.isChecked = config.dialpadVibration
-        settings_dialpad_vibration_holder.setOnClickListener {
-            settings_dialpad_vibration.toggle()
-            config.dialpadVibration = settings_dialpad_vibration.isChecked
+        binding.apply {
+            settingsDialpadVibration.isChecked = config.dialpadVibration
+            settingsDialpadVibrationHolder.setOnClickListener {
+                settingsDialpadVibration.toggle()
+                config.dialpadVibration = settingsDialpadVibration.isChecked
+            }
         }
     }
 
     private fun setupDialpadNumbers() {
-        settings_hide_dialpad_numbers.isChecked = config.hideDialpadNumbers
-        settings_hide_dialpad_numbers_holder.setOnClickListener {
-            settings_hide_dialpad_numbers.toggle()
-            config.hideDialpadNumbers = settings_hide_dialpad_numbers.isChecked
+        binding.apply {
+            settingsHideDialpadNumbers.isChecked = config.hideDialpadNumbers
+            settingsHideDialpadNumbersHolder.setOnClickListener {
+                settingsHideDialpadNumbers.toggle()
+                config.hideDialpadNumbers = settingsHideDialpadNumbers.isChecked
+            }
         }
     }
 
     private fun setupDialpadBeeps() {
-        settings_dialpad_beeps.isChecked = config.dialpadBeeps
-        settings_dialpad_beeps_holder.setOnClickListener {
-            settings_dialpad_beeps.toggle()
-            config.dialpadBeeps = settings_dialpad_beeps.isChecked
+        binding.apply {
+            settingsDialpadBeeps.isChecked = config.dialpadBeeps
+            settingsDialpadBeepsHolder.setOnClickListener {
+                settingsDialpadBeeps.toggle()
+                config.dialpadBeeps = settingsDialpadBeeps.isChecked
+            }
         }
     }
 
     private fun setupShowCallConfirmation() {
-        settings_show_call_confirmation.isChecked = config.showCallConfirmation
-        settings_show_call_confirmation_holder.setOnClickListener {
-            settings_show_call_confirmation.toggle()
-            config.showCallConfirmation = settings_show_call_confirmation.isChecked
+        binding.apply {
+            settingsShowCallConfirmation.isChecked = config.showCallConfirmation
+            settingsShowCallConfirmationHolder.setOnClickListener {
+                settingsShowCallConfirmation.toggle()
+                config.showCallConfirmation = settingsShowCallConfirmation.isChecked
+            }
         }
     }
 
     private fun setupDisableProximitySensor() {
-        settings_disable_proximity_sensor.isChecked = config.disableProximitySensor
-        settings_disable_proximity_sensor_holder.setOnClickListener {
-            settings_disable_proximity_sensor.toggle()
-            config.disableProximitySensor = settings_disable_proximity_sensor.isChecked
+        binding.apply {
+            settingsDisableProximitySensor.isChecked = config.disableProximitySensor
+            settingsDisableProximitySensorHolder.setOnClickListener {
+                settingsDisableProximitySensor.toggle()
+                config.disableProximitySensor = settingsDisableProximitySensor.isChecked
+            }
         }
     }
 
     private fun setupDisableSwipeToAnswer() {
-        settings_disable_swipe_to_answer.isChecked = config.disableSwipeToAnswer
-        settings_disable_swipe_to_answer_holder.setOnClickListener {
-            settings_disable_swipe_to_answer.toggle()
-            config.disableSwipeToAnswer = settings_disable_swipe_to_answer.isChecked
+        binding.apply {
+            settingsDisableSwipeToAnswer.isChecked = config.disableSwipeToAnswer
+            settingsDisableSwipeToAnswerHolder.setOnClickListener {
+                settingsDisableSwipeToAnswer.toggle()
+                config.disableSwipeToAnswer = settingsDisableSwipeToAnswer.isChecked
+            }
         }
     }
 
     private fun setupAlwaysShowFullscreen() {
-        settings_always_show_fullscreen.isChecked = config.alwaysShowFullscreen
-        settings_always_show_fullscreen_holder.setOnClickListener {
-            settings_always_show_fullscreen.toggle()
-            config.alwaysShowFullscreen = settings_always_show_fullscreen.isChecked
+        binding.apply {
+            settingsAlwaysShowFullscreen.isChecked = config.alwaysShowFullscreen
+            settingsAlwaysShowFullscreenHolder.setOnClickListener {
+                settingsAlwaysShowFullscreen.toggle()
+                config.alwaysShowFullscreen = settingsAlwaysShowFullscreen.isChecked
+            }
         }
     }
 
     private fun setupCallsExport() {
-        settings_export_calls_holder.setOnClickListener {
+        binding.settingsExportCallsHolder.setOnClickListener {
             ExportCallHistoryDialog(this) { filename ->
                 saveDocument.launch(filename)
             }
@@ -301,8 +332,8 @@ class SettingsActivity : SimpleActivity() {
     }
 
     private fun setupCallsImport() {
-        settings_import_calls_holder.setOnClickListener {
-            getContent.launch(callHistoryFileType)
+        binding.settingsImportCallsHolder.setOnClickListener {
+            getContent.launch(CALL_HISTORY_FILE_TYPE)
         }
     }