diff --git a/changelog.d/4176.bugfix b/changelog.d/4176.bugfix
new file mode 100644
index 0000000000..6134dfca7c
--- /dev/null
+++ b/changelog.d/4176.bugfix
@@ -0,0 +1 @@
+SIP user to native user mapping is wrong
\ No newline at end of file
diff --git a/vector/src/main/java/im/vector/app/features/call/dialpad/DialPadFragment.kt b/vector/src/main/java/im/vector/app/features/call/dialpad/DialPadFragment.kt
index 5e2a569188..16e7c01b5c 100644
--- a/vector/src/main/java/im/vector/app/features/call/dialpad/DialPadFragment.kt
+++ b/vector/src/main/java/im/vector/app/features/call/dialpad/DialPadFragment.kt
@@ -170,8 +170,10 @@ class DialPadFragment : Fragment(), TextWatcher {
         }
     }
 
-    private fun clear() {
-        digits.setText("")
+    fun clear() {
+        if (::digits.isInitialized) {
+            digits.setText("")
+        }
     }
 
     private fun formatNumber(dialString: String): String {
diff --git a/vector/src/main/java/im/vector/app/features/call/dialpad/DialPadLookup.kt b/vector/src/main/java/im/vector/app/features/call/dialpad/DialPadLookup.kt
index d256156d15..eadccab4f6 100644
--- a/vector/src/main/java/im/vector/app/features/call/dialpad/DialPadLookup.kt
+++ b/vector/src/main/java/im/vector/app/features/call/dialpad/DialPadLookup.kt
@@ -39,15 +39,21 @@ class DialPadLookup @Inject constructor(
     suspend fun lookupPhoneNumber(phoneNumber: String): Result {
         session.vectorCallService.protocolChecker.awaitCheckProtocols()
         val thirdPartyUser = session.pstnLookup(phoneNumber, webRtcCallManager.supportedPSTNProtocol).firstOrNull() ?: throw Failure.NoResult
-        // check to see if this is a virtual user, in which case we should find the native user
-        val nativeUserId = if (webRtcCallManager.supportsVirtualRooms) {
-            val nativeLookupResults = session.sipNativeLookup(thirdPartyUser.userId)
-            nativeLookupResults.firstOrNull()?.userId ?: thirdPartyUser.userId
+        val sipUserId = thirdPartyUser.userId
+        val nativeLookupResults = session.sipNativeLookup(thirdPartyUser.userId)
+        // If I have a native user I check for an existing native room with him...
+        val roomId = if (nativeLookupResults.isNotEmpty()) {
+            val nativeUserId = nativeLookupResults.first().userId
+            if (nativeUserId == session.myUserId) {
+                throw Failure.NumberIsYours
+            }
+            session.getExistingDirectRoomWithUser(nativeUserId)
+            // if there is not, just create a DM with the sip user
+            ?: directRoomHelper.ensureDMExists(sipUserId)
         } else {
-            thirdPartyUser.userId
+            // do the same if there is no corresponding native user.
+            directRoomHelper.ensureDMExists(sipUserId)
         }
-        if (nativeUserId == session.myUserId) throw Failure.NumberIsYours
-        val roomId = directRoomHelper.ensureDMExists(nativeUserId)
-        return Result(userId = nativeUserId, roomId = roomId)
+        return Result(userId = sipUserId, roomId = roomId)
     }
 }
diff --git a/vector/src/main/java/im/vector/app/features/home/HomeDetailFragment.kt b/vector/src/main/java/im/vector/app/features/home/HomeDetailFragment.kt
index 627f4b4581..24677cf940 100644
--- a/vector/src/main/java/im/vector/app/features/home/HomeDetailFragment.kt
+++ b/vector/src/main/java/im/vector/app/features/home/HomeDetailFragment.kt
@@ -155,7 +155,7 @@ class HomeDetailFragment @Inject constructor(
 
         viewModel.observeViewEvents { viewEvent ->
             when (viewEvent) {
-                HomeDetailViewEvents.CallStarted   -> dismissLoadingDialog()
+                HomeDetailViewEvents.CallStarted   -> handleCallStarted()
                 is HomeDetailViewEvents.FailToCall -> showFailure(viewEvent.failure)
                 HomeDetailViewEvents.Loading       -> showLoadingDialog()
             }
@@ -190,10 +190,16 @@ class HomeDetailFragment @Inject constructor(
 
         sharedCallActionViewModel
                 .liveKnownCalls
-                .observe(viewLifecycleOwner, {
+                .observe(viewLifecycleOwner) {
                     currentCallsViewPresenter.updateCall(callManager.getCurrentCall(), callManager.getCalls())
                     invalidateOptionsMenu()
-                })
+                }
+    }
+
+    private fun handleCallStarted() {
+        dismissLoadingDialog()
+        val fragmentTag = HomeTab.DialPad.toFragmentTag()
+        (childFragmentManager.findFragmentByTag(fragmentTag) as? DialPadFragment)?.clear()
     }
 
     override fun onDestroyView() {
@@ -370,8 +376,10 @@ class HomeDetailFragment @Inject constructor(
         invalidateOptionsMenu()
     }
 
+    private fun HomeTab.toFragmentTag() = "FRAGMENT_TAG_$this"
+
     private fun updateSelectedFragment(tab: HomeTab) {
-        val fragmentTag = "FRAGMENT_TAG_$tab"
+        val fragmentTag = tab.toFragmentTag()
         val fragmentToShow = childFragmentManager.findFragmentByTag(fragmentTag)
         childFragmentManager.commitTransaction {
             childFragmentManager.fragments