replace the phone icon with a dialpad for getting to the dialpad

app/src/main/kotlin/com/simplemobiletools/contacts/activities/MainActivity.kt

@@ -165,7 +165,7 @@ class MainActivity : SimpleActivity(), RefreshContactsListener {
         }
         isFirstResume = false
 
-        val blackIcon = resources.getColoredDrawableWithColor(R.drawable.ic_phone_big, if (isBlackAndWhiteTheme()) Color.BLACK else Color.WHITE)
+        val blackIcon = resources.getColoredDrawableWithColor(R.drawable.ic_dialpad, if (isBlackAndWhiteTheme()) Color.BLACK else Color.WHITE)
         main_dialpad_button.setImageDrawable(blackIcon)
         main_dialpad_button.background.applyColorFilter(getAdjustedPrimaryColor())
     }

app/src/main/res/layout/activity_main.xml

@@ -31,7 +31,7 @@
         android:layout_marginBottom="@dimen/activity_margin"
         android:background="@drawable/circle_background"
         android:elevation="@dimen/medium_margin"
-        android:padding="@dimen/normal_margin"
-        android:src="@drawable/ic_phone_big"/>
+        android:padding="@dimen/activity_margin"
+        android:src="@drawable/ic_dialpad"/>
 
 </RelativeLayout>