diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index d787b4f97..4c3a0ae64 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -1,6 +1,9 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools">
+    <uses-permission android:name="android.permission.INTERNET" />
+    <uses-permission android:name="android.permission.CAMERA" />
+    <uses-permission android:name="android.permission.RECORD_AUDIO" />
 
     <!-- To be able to display contacts list & match calling/called numbers -->
     <uses-permission android:name="android.permission.READ_CONTACTS" />
diff --git a/app/src/main/java/org/linphone/contacts/ContactsManager.kt b/app/src/main/java/org/linphone/contacts/ContactsManager.kt
index 213ce1334..1746d0a94 100644
--- a/app/src/main/java/org/linphone/contacts/ContactsManager.kt
+++ b/app/src/main/java/org/linphone/contacts/ContactsManager.kt
@@ -41,7 +41,7 @@ import org.linphone.utils.ImageUtils
 
 class ContactsManager @UiThread constructor(context: Context) {
     companion object {
-        const val TAG = "[Contacts Manager]"
+        private const val TAG = "[Contacts Manager]"
     }
 
     val contactAvatar: IconCompat
diff --git a/app/src/main/java/org/linphone/core/CoreContext.kt b/app/src/main/java/org/linphone/core/CoreContext.kt
index a4f4a7547..bf10cb0ee 100644
--- a/app/src/main/java/org/linphone/core/CoreContext.kt
+++ b/app/src/main/java/org/linphone/core/CoreContext.kt
@@ -42,7 +42,7 @@ import org.linphone.utils.LinphoneUtils
 
 class CoreContext @UiThread constructor(val context: Context) : HandlerThread("Core Thread") {
     companion object {
-        const val TAG = "[Core Context]"
+        private const val TAG = "[Core Context]"
     }
 
     lateinit var core: Core
diff --git a/app/src/main/java/org/linphone/core/CoreForegroundService.kt b/app/src/main/java/org/linphone/core/CoreForegroundService.kt
index 77b47438d..ffea9f3e4 100644
--- a/app/src/main/java/org/linphone/core/CoreForegroundService.kt
+++ b/app/src/main/java/org/linphone/core/CoreForegroundService.kt
@@ -26,7 +26,7 @@ import org.linphone.core.tools.service.CoreService
 
 class CoreForegroundService : CoreService() {
     companion object {
-        const val TAG = "[Core Foreground Service]"
+        private const val TAG = "[Core Foreground Service]"
     }
 
     override fun onCreate() {
diff --git a/app/src/main/java/org/linphone/notifications/NotificationBroadcastReceiver.kt b/app/src/main/java/org/linphone/notifications/NotificationBroadcastReceiver.kt
index baf6720d8..3d4f14aab 100644
--- a/app/src/main/java/org/linphone/notifications/NotificationBroadcastReceiver.kt
+++ b/app/src/main/java/org/linphone/notifications/NotificationBroadcastReceiver.kt
@@ -28,7 +28,7 @@ import org.linphone.core.tools.Log
 
 class NotificationBroadcastReceiver : BroadcastReceiver() {
     companion object {
-        const val TAG = "[NotificationBroadcastReceiver]"
+        private const val TAG = "[NotificationBroadcastReceiver]"
     }
 
     override fun onReceive(context: Context, intent: Intent) {
diff --git a/app/src/main/java/org/linphone/notifications/NotificationsManager.kt b/app/src/main/java/org/linphone/notifications/NotificationsManager.kt
index 338a15eb4..7a59e510a 100644
--- a/app/src/main/java/org/linphone/notifications/NotificationsManager.kt
+++ b/app/src/main/java/org/linphone/notifications/NotificationsManager.kt
@@ -56,7 +56,7 @@ import org.linphone.utils.LinphoneUtils
 
 class NotificationsManager @MainThread constructor(private val context: Context) {
     companion object {
-        const val TAG = "[Notifications Manager]"
+        private const val TAG = "[Notifications Manager]"
 
         const val INTENT_HANGUP_CALL_NOTIF_ACTION = "org.linphone.HANGUP_CALL_ACTION"
         const val INTENT_ANSWER_CALL_NOTIF_ACTION = "org.linphone.ANSWER_CALL_ACTION"
diff --git a/app/src/main/java/org/linphone/ui/assistant/viewmodel/AssistantViewModel.kt b/app/src/main/java/org/linphone/ui/assistant/viewmodel/AssistantViewModel.kt
index e96daf5cb..53eedeb8c 100644
--- a/app/src/main/java/org/linphone/ui/assistant/viewmodel/AssistantViewModel.kt
+++ b/app/src/main/java/org/linphone/ui/assistant/viewmodel/AssistantViewModel.kt
@@ -37,7 +37,7 @@ import org.linphone.utils.Event
 
 class AssistantViewModel @UiThread constructor() : ViewModel() {
     companion object {
-        const val TAG = "[Assistant ViewModel]"
+        private const val TAG = "[Assistant ViewModel]"
     }
     val username = MutableLiveData<String>()
 
diff --git a/app/src/main/java/org/linphone/ui/main/calls/fragment/CallsListFragment.kt b/app/src/main/java/org/linphone/ui/main/calls/fragment/CallsListFragment.kt
index c910f31ec..966eaf123 100644
--- a/app/src/main/java/org/linphone/ui/main/calls/fragment/CallsListFragment.kt
+++ b/app/src/main/java/org/linphone/ui/main/calls/fragment/CallsListFragment.kt
@@ -52,7 +52,7 @@ import org.linphone.utils.Event
 @UiThread
 class CallsListFragment : GenericFragment() {
     companion object {
-        const val TAG = "[Calls List Fragment]"
+        private const val TAG = "[Calls List Fragment]"
     }
 
     private lateinit var binding: CallsListFragmentBinding
diff --git a/app/src/main/java/org/linphone/ui/main/calls/viewmodel/SuggestionsListViewModel.kt b/app/src/main/java/org/linphone/ui/main/calls/viewmodel/SuggestionsListViewModel.kt
index 9bed5ba9b..187aeaac8 100644
--- a/app/src/main/java/org/linphone/ui/main/calls/viewmodel/SuggestionsListViewModel.kt
+++ b/app/src/main/java/org/linphone/ui/main/calls/viewmodel/SuggestionsListViewModel.kt
@@ -37,7 +37,7 @@ import org.linphone.ui.main.model.isInSecureMode
 
 class SuggestionsListViewModel @UiThread constructor() : ViewModel() {
     companion object {
-        const val TAG = "[Suggestions List ViewModel]"
+        private const val TAG = "[Suggestions List ViewModel]"
     }
 
     val suggestionsList = MutableLiveData<ArrayList<ContactAvatarModel>>()
diff --git a/app/src/main/java/org/linphone/ui/main/contacts/fragment/ContactFragment.kt b/app/src/main/java/org/linphone/ui/main/contacts/fragment/ContactFragment.kt
index 9a0e982ab..abdff70ef 100644
--- a/app/src/main/java/org/linphone/ui/main/contacts/fragment/ContactFragment.kt
+++ b/app/src/main/java/org/linphone/ui/main/contacts/fragment/ContactFragment.kt
@@ -49,7 +49,7 @@ import org.linphone.utils.Event
 @UiThread
 class ContactFragment : GenericFragment() {
     companion object {
-        const val TAG = "[Contact Fragment]"
+        private const val TAG = "[Contact Fragment]"
     }
 
     private lateinit var binding: ContactFragmentBinding
diff --git a/app/src/main/java/org/linphone/ui/main/contacts/fragment/ContactsListFragment.kt b/app/src/main/java/org/linphone/ui/main/contacts/fragment/ContactsListFragment.kt
index 5db063867..4b3c558ae 100644
--- a/app/src/main/java/org/linphone/ui/main/contacts/fragment/ContactsListFragment.kt
+++ b/app/src/main/java/org/linphone/ui/main/contacts/fragment/ContactsListFragment.kt
@@ -42,7 +42,7 @@ import org.linphone.utils.Event
 @UiThread
 class ContactsListFragment : GenericFragment() {
     companion object {
-        const val TAG = "[Contacts List Fragment]"
+        private const val TAG = "[Contacts List Fragment]"
     }
 
     private lateinit var binding: ContactsListFragmentBinding
diff --git a/app/src/main/java/org/linphone/ui/main/contacts/fragment/EditContactFragment.kt b/app/src/main/java/org/linphone/ui/main/contacts/fragment/EditContactFragment.kt
index 4446882f9..5056877f9 100644
--- a/app/src/main/java/org/linphone/ui/main/contacts/fragment/EditContactFragment.kt
+++ b/app/src/main/java/org/linphone/ui/main/contacts/fragment/EditContactFragment.kt
@@ -50,7 +50,7 @@ import org.linphone.utils.FileUtils
 @UiThread
 class EditContactFragment : GenericFragment() {
     companion object {
-        const val TAG = "[Edit Contact Fragment]"
+        private const val TAG = "[Edit Contact Fragment]"
     }
 
     private lateinit var binding: ContactNewOrEditFragmentBinding
diff --git a/app/src/main/java/org/linphone/ui/main/contacts/fragment/NewContactFragment.kt b/app/src/main/java/org/linphone/ui/main/contacts/fragment/NewContactFragment.kt
index 828b05a7e..a07719f39 100644
--- a/app/src/main/java/org/linphone/ui/main/contacts/fragment/NewContactFragment.kt
+++ b/app/src/main/java/org/linphone/ui/main/contacts/fragment/NewContactFragment.kt
@@ -50,7 +50,7 @@ import org.linphone.utils.FileUtils
 @UiThread
 class NewContactFragment : GenericFragment() {
     companion object {
-        const val TAG = "[New Contact Fragment]"
+        private const val TAG = "[New Contact Fragment]"
     }
 
     private lateinit var binding: ContactNewOrEditFragmentBinding
diff --git a/app/src/main/java/org/linphone/ui/main/contacts/model/ContactAvatarModel.kt b/app/src/main/java/org/linphone/ui/main/contacts/model/ContactAvatarModel.kt
index b4c867465..a44611730 100644
--- a/app/src/main/java/org/linphone/ui/main/contacts/model/ContactAvatarModel.kt
+++ b/app/src/main/java/org/linphone/ui/main/contacts/model/ContactAvatarModel.kt
@@ -32,7 +32,7 @@ import org.linphone.utils.LinphoneUtils
 
 class ContactAvatarModel @WorkerThread constructor(val friend: Friend) {
     companion object {
-        const val TAG = "[Contact Avatar Model]"
+        private const val TAG = "[Contact Avatar Model]"
     }
 
     val id = friend.refKey
diff --git a/app/src/main/java/org/linphone/ui/main/contacts/viewmodel/ContactNewOrEditViewModel.kt b/app/src/main/java/org/linphone/ui/main/contacts/viewmodel/ContactNewOrEditViewModel.kt
index c91bc36be..5a899f122 100644
--- a/app/src/main/java/org/linphone/ui/main/contacts/viewmodel/ContactNewOrEditViewModel.kt
+++ b/app/src/main/java/org/linphone/ui/main/contacts/viewmodel/ContactNewOrEditViewModel.kt
@@ -34,7 +34,7 @@ import org.linphone.utils.FileUtils
 
 class ContactNewOrEditViewModel @UiThread constructor() : ViewModel() {
     companion object {
-        const val TAG = "[Contact New/Edit View Model]"
+        private const val TAG = "[Contact New/Edit View Model]"
     }
 
     private lateinit var friend: Friend
diff --git a/app/src/main/java/org/linphone/ui/main/contacts/viewmodel/ContactViewModel.kt b/app/src/main/java/org/linphone/ui/main/contacts/viewmodel/ContactViewModel.kt
index 2c2232f4d..1d723cd0e 100644
--- a/app/src/main/java/org/linphone/ui/main/contacts/viewmodel/ContactViewModel.kt
+++ b/app/src/main/java/org/linphone/ui/main/contacts/viewmodel/ContactViewModel.kt
@@ -41,7 +41,7 @@ import org.linphone.utils.PhoneNumberUtils
 
 class ContactViewModel @UiThread constructor() : ViewModel() {
     companion object {
-        const val TAG = "[Contact ViewModel]"
+        private const val TAG = "[Contact ViewModel]"
     }
 
     val contact = MutableLiveData<ContactAvatarModel>()
diff --git a/app/src/main/java/org/linphone/ui/main/contacts/viewmodel/ContactsListViewModel.kt b/app/src/main/java/org/linphone/ui/main/contacts/viewmodel/ContactsListViewModel.kt
index 6c8e391bf..ea46897b9 100644
--- a/app/src/main/java/org/linphone/ui/main/contacts/viewmodel/ContactsListViewModel.kt
+++ b/app/src/main/java/org/linphone/ui/main/contacts/viewmodel/ContactsListViewModel.kt
@@ -37,7 +37,7 @@ import org.linphone.ui.main.model.isInSecureMode
 
 class ContactsListViewModel @UiThread constructor() : ViewModel() {
     companion object {
-        const val TAG = "[Contacts List ViewModel]"
+        private const val TAG = "[Contacts List ViewModel]"
     }
 
     val contactsList = MutableLiveData<ArrayList<ContactAvatarModel>>()
diff --git a/app/src/main/java/org/linphone/ui/main/fragment/GenericFragment.kt b/app/src/main/java/org/linphone/ui/main/fragment/GenericFragment.kt
index 910b5bcba..bed6b2a72 100644
--- a/app/src/main/java/org/linphone/ui/main/fragment/GenericFragment.kt
+++ b/app/src/main/java/org/linphone/ui/main/fragment/GenericFragment.kt
@@ -33,18 +33,22 @@ import org.linphone.ui.main.viewmodel.SharedMainViewModel
 
 @UiThread
 abstract class GenericFragment : Fragment() {
+    companion object {
+        private const val TAG = "[Generic Fragment]"
+    }
+
     protected lateinit var sharedViewModel: SharedMainViewModel
 
     private val onBackPressedCallback = object : OnBackPressedCallback(false) {
         override fun handleOnBackPressed() {
             try {
                 val navController = findNavController()
-                Log.d("[Generic Fragment] ${getFragmentRealClassName()} handleOnBackPressed")
+                Log.d("$TAG ${getFragmentRealClassName()} handleOnBackPressed")
                 if (!navController.popBackStack()) {
-                    Log.d("[Generic Fragment] ${getFragmentRealClassName()} couldn't pop")
+                    Log.d("$TAG ${getFragmentRealClassName()} couldn't pop")
                     if (!navController.navigateUp()) {
                         Log.d(
-                            "[Generic Fragment] ${getFragmentRealClassName()} couldn't navigate up"
+                            "$TAG ${getFragmentRealClassName()} couldn't navigate up"
                         )
                         // Disable this callback & start a new back press event
                         isEnabled = false
@@ -53,7 +57,7 @@ abstract class GenericFragment : Fragment() {
                 }
             } catch (ise: IllegalStateException) {
                 Log.e(
-                    "[Generic Fragment] ${getFragmentRealClassName()}.handleOnBackPressed() Can't go back: $ise"
+                    "$TAG ${getFragmentRealClassName()}.handleOnBackPressed() Can't go back: $ise"
                 )
             }
         }
@@ -68,7 +72,7 @@ abstract class GenericFragment : Fragment() {
 
         sharedViewModel.isSlidingPaneSlideable.observe(viewLifecycleOwner) {
             Log.d(
-                "[Generic Fragment] ${getFragmentRealClassName()} shared main VM sliding pane has changed"
+                "$TAG ${getFragmentRealClassName()} shared main VM sliding pane has changed"
             )
             onBackPressedCallback.isEnabled = backPressedCallBackEnabled()
         }
@@ -90,17 +94,17 @@ abstract class GenericFragment : Fragment() {
         try {
             requireActivity().onBackPressedDispatcher.onBackPressed()
         } catch (ise: IllegalStateException) {
-            Log.w("[Generic Fragment] ${getFragmentRealClassName()}.goBack() can't go back: $ise")
+            Log.w("$TAG ${getFragmentRealClassName()}.goBack() can't go back: $ise")
             onBackPressedCallback.handleOnBackPressed()
         }
     }
 
     private fun setupBackPressCallback() {
-        Log.d("[Generic Fragment] ${getFragmentRealClassName()} setupBackPressCallback")
+        Log.d("$TAG ${getFragmentRealClassName()} setupBackPressCallback")
 
         val backButton = view?.findViewById<ImageView>(R.id.back)
         if (backButton != null && backButton.visibility == View.VISIBLE) {
-            Log.d("[Generic Fragment] ${getFragmentRealClassName()} found back button")
+            Log.d("$TAG ${getFragmentRealClassName()} found back button")
             // If popping navigation back stack entry would bring us to an "empty" fragment
             // then don't do it if sliding pane layout isn't "flat"
             onBackPressedCallback.isEnabled = backPressedCallBackEnabled()
@@ -123,14 +127,14 @@ abstract class GenericFragment : Fragment() {
 
         val isSlidingPaneFlat = sharedViewModel.isSlidingPaneSlideable.value == false
         Log.d(
-            "[Generic Fragment] ${getFragmentRealClassName()} isSlidingPaneFlat ? $isSlidingPaneFlat"
+            "$TAG ${getFragmentRealClassName()} isSlidingPaneFlat ? $isSlidingPaneFlat"
         )
         val isPreviousFragmentEmpty = findNavController().previousBackStackEntry?.destination?.id == R.id.emptyFragment
         Log.d(
-            "[Generic Fragment] ${getFragmentRealClassName()} isPreviousFragmentEmpty ? $isPreviousFragmentEmpty"
+            "$TAG ${getFragmentRealClassName()} isPreviousFragmentEmpty ? $isPreviousFragmentEmpty"
         )
         val popBackStack = isSlidingPaneFlat || !isPreviousFragmentEmpty
-        Log.d("[Generic Fragment] ${getFragmentRealClassName()} popBackStack ? $popBackStack")
+        Log.d("$TAG ${getFragmentRealClassName()} popBackStack ? $popBackStack")
         return popBackStack
     }
 }
diff --git a/app/src/main/java/org/linphone/ui/main/settings/fragment/AccountProfileFragment.kt b/app/src/main/java/org/linphone/ui/main/settings/fragment/AccountProfileFragment.kt
index 203979d10..22a5f1630 100644
--- a/app/src/main/java/org/linphone/ui/main/settings/fragment/AccountProfileFragment.kt
+++ b/app/src/main/java/org/linphone/ui/main/settings/fragment/AccountProfileFragment.kt
@@ -18,7 +18,6 @@ import kotlinx.coroutines.withContext
 import org.linphone.R
 import org.linphone.core.tools.Log
 import org.linphone.databinding.AccountProfileFragmentBinding
-import org.linphone.ui.main.contacts.fragment.EditContactFragment
 import org.linphone.ui.main.fragment.GenericFragment
 import org.linphone.ui.main.settings.viewmodel.AccountProfileViewModel
 import org.linphone.utils.FileUtils
@@ -26,7 +25,7 @@ import org.linphone.utils.FileUtils
 @UiThread
 class AccountProfileFragment : GenericFragment() {
     companion object {
-        const val TAG = "[Account Profile Fragment]"
+        private const val TAG = "[Account Profile Fragment]"
     }
 
     private lateinit var binding: AccountProfileFragmentBinding
@@ -54,12 +53,12 @@ class AccountProfileFragment : GenericFragment() {
                     }
                 } else {
                     Log.e(
-                        "${EditContactFragment.TAG} Failed to copy file from [$uri] to [${localFileName.absolutePath}]"
+                        "$TAG Failed to copy file from [$uri] to [${localFileName.absolutePath}]"
                     )
                 }
             }
         } else {
-            Log.w("${EditContactFragment.TAG} No picture picked")
+            Log.w("$TAG No picture picked")
         }
     }
 
diff --git a/app/src/main/java/org/linphone/ui/main/settings/viewmodel/AccountProfileViewModel.kt b/app/src/main/java/org/linphone/ui/main/settings/viewmodel/AccountProfileViewModel.kt
index 9366b2f06..7074b6305 100644
--- a/app/src/main/java/org/linphone/ui/main/settings/viewmodel/AccountProfileViewModel.kt
+++ b/app/src/main/java/org/linphone/ui/main/settings/viewmodel/AccountProfileViewModel.kt
@@ -13,7 +13,7 @@ import org.linphone.utils.FileUtils
 
 class AccountProfileViewModel @UiThread constructor() : ViewModel() {
     companion object {
-        const val TAG = "[Account Profile ViewModel]"
+        private const val TAG = "[Account Profile ViewModel]"
     }
 
     val picturePath = MutableLiveData<String>()
diff --git a/app/src/main/java/org/linphone/ui/main/viewmodel/BottomNavBarViewModel.kt b/app/src/main/java/org/linphone/ui/main/viewmodel/BottomNavBarViewModel.kt
index 48b884345..cb87d37d4 100644
--- a/app/src/main/java/org/linphone/ui/main/viewmodel/BottomNavBarViewModel.kt
+++ b/app/src/main/java/org/linphone/ui/main/viewmodel/BottomNavBarViewModel.kt
@@ -32,7 +32,7 @@ import org.linphone.core.tools.Log
 
 class BottomNavBarViewModel @UiThread constructor() : ViewModel() {
     companion object {
-        const val TAG = "[Bottom Navigation Bar ViewModel]"
+        private const val TAG = "[Bottom Navigation Bar ViewModel]"
     }
 
     val contactsSelected = MutableLiveData<Boolean>()
diff --git a/app/src/main/java/org/linphone/ui/main/viewmodel/DrawerMenuViewModel.kt b/app/src/main/java/org/linphone/ui/main/viewmodel/DrawerMenuViewModel.kt
index 0b4e5aad2..58097b9fd 100644
--- a/app/src/main/java/org/linphone/ui/main/viewmodel/DrawerMenuViewModel.kt
+++ b/app/src/main/java/org/linphone/ui/main/viewmodel/DrawerMenuViewModel.kt
@@ -32,7 +32,7 @@ import org.linphone.utils.Event
 
 class DrawerMenuViewModel @UiThread constructor() : ViewModel() {
     companion object {
-        const val TAG = "[Drawer Menu ViewModel]"
+        private const val TAG = "[Drawer Menu ViewModel]"
     }
 
     val accounts = MutableLiveData<ArrayList<AccountModel>>()
diff --git a/app/src/main/java/org/linphone/ui/main/viewmodel/TopBarViewModel.kt b/app/src/main/java/org/linphone/ui/main/viewmodel/TopBarViewModel.kt
index e5ee2fe47..50932d0a8 100644
--- a/app/src/main/java/org/linphone/ui/main/viewmodel/TopBarViewModel.kt
+++ b/app/src/main/java/org/linphone/ui/main/viewmodel/TopBarViewModel.kt
@@ -30,7 +30,7 @@ import org.linphone.utils.Event
 
 class TopBarViewModel @UiThread constructor() : ViewModel() {
     companion object {
-        const val TAG = "[Top Bar ViewModel]"
+        private const val TAG = "[Top Bar ViewModel]"
     }
 
     val title = MutableLiveData<String>()
diff --git a/app/src/main/java/org/linphone/ui/voip/VoipActivity.kt b/app/src/main/java/org/linphone/ui/voip/VoipActivity.kt
index 73d0ce006..7db104fc8 100644
--- a/app/src/main/java/org/linphone/ui/voip/VoipActivity.kt
+++ b/app/src/main/java/org/linphone/ui/voip/VoipActivity.kt
@@ -26,6 +26,8 @@ import androidx.annotation.UiThread
 import androidx.appcompat.app.AppCompatActivity
 import androidx.core.content.ContextCompat
 import androidx.core.view.WindowCompat
+import androidx.core.view.WindowInsetsCompat
+import androidx.core.view.WindowInsetsControllerCompat
 import androidx.databinding.DataBindingUtil
 import androidx.lifecycle.ViewModelProvider
 import androidx.lifecycle.lifecycleScope
@@ -33,17 +35,24 @@ import androidx.navigation.findNavController
 import androidx.navigation.fragment.findNavController
 import org.linphone.LinphoneApplication
 import org.linphone.R
+import org.linphone.core.tools.Log
 import org.linphone.databinding.VoipActivityBinding
 import org.linphone.ui.voip.fragment.ActiveCallFragmentDirections
 import org.linphone.ui.voip.fragment.IncomingCallFragmentDirections
 import org.linphone.ui.voip.fragment.OutgoingCallFragmentDirections
 import org.linphone.ui.voip.viewmodel.CallsViewModel
+import org.linphone.ui.voip.viewmodel.SharedCallViewModel
 import org.linphone.utils.slideInToastFromTopForDuration
 
 @UiThread
 class VoipActivity : AppCompatActivity() {
+    companion object {
+        private const val TAG = "[VoIP Activity]"
+    }
+
     private lateinit var binding: VoipActivityBinding
 
+    private lateinit var sharedViewModel: SharedCallViewModel
     private lateinit var callsViewModel: CallsViewModel
 
     override fun onCreate(savedInstanceState: Bundle?) {
@@ -63,6 +72,10 @@ class VoipActivity : AppCompatActivity() {
         binding = DataBindingUtil.setContentView(this, R.layout.voip_activity)
         binding.lifecycleOwner = this
 
+        sharedViewModel = run {
+            ViewModelProvider(this)[SharedCallViewModel::class.java]
+        }
+
         callsViewModel = run {
             ViewModelProvider(this)[CallsViewModel::class.java]
         }
@@ -100,6 +113,12 @@ class VoipActivity : AppCompatActivity() {
                 finish()
             }
         }
+
+        sharedViewModel.toggleFullScreenEvent.observe(this) {
+            it.consume { hide ->
+                hideUI(hide)
+            }
+        }
     }
 
     fun showBlueToast(message: String, @DrawableRes icon: Int) {
@@ -109,4 +128,20 @@ class VoipActivity : AppCompatActivity() {
         val target = binding.blueToast.root
         target.slideInToastFromTopForDuration(binding.root as ViewGroup, lifecycleScope)
     }
+
+    private fun hideUI(hide: Boolean) {
+        Log.i("$TAG Switching full screen mode to ${if (hide) "ON" else "OFF"}")
+        val windowInsetsCompat = WindowInsetsControllerCompat(window, window.decorView)
+        if (hide) {
+            WindowCompat.setDecorFitsSystemWindows(window, false)
+            windowInsetsCompat.let {
+                it.hide(WindowInsetsCompat.Type.systemBars())
+                it.systemBarsBehavior =
+                    WindowInsetsControllerCompat.BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE
+            }
+        } else {
+            windowInsetsCompat.show(WindowInsetsCompat.Type.systemBars())
+            WindowCompat.setDecorFitsSystemWindows(window, true)
+        }
+    }
 }
diff --git a/app/src/main/java/org/linphone/ui/voip/fragment/ActiveCallFragment.kt b/app/src/main/java/org/linphone/ui/voip/fragment/ActiveCallFragment.kt
index e72e5b64a..11dd0cdfe 100644
--- a/app/src/main/java/org/linphone/ui/voip/fragment/ActiveCallFragment.kt
+++ b/app/src/main/java/org/linphone/ui/voip/fragment/ActiveCallFragment.kt
@@ -30,15 +30,16 @@ import androidx.lifecycle.ViewModelProvider
 import org.linphone.LinphoneApplication.Companion.coreContext
 import org.linphone.R
 import org.linphone.databinding.VoipActiveCallFragmentBinding
-import org.linphone.ui.main.fragment.GenericFragment
 import org.linphone.ui.voip.VoipActivity
 import org.linphone.ui.voip.model.ZrtpSasConfirmationDialogModel
 import org.linphone.ui.voip.viewmodel.CurrentCallViewModel
+import org.linphone.ui.voip.viewmodel.SharedCallViewModel
 import org.linphone.utils.AppUtils
 import org.linphone.utils.DialogUtils
+import org.linphone.utils.Event
 
 @UiThread
-class ActiveCallFragment : GenericFragment() {
+class ActiveCallFragment : GenericCallFragment() {
     private lateinit var binding: VoipActiveCallFragmentBinding
 
     private lateinit var callViewModel: CurrentCallViewModel
@@ -89,11 +90,12 @@ class ActiveCallFragment : GenericFragment() {
         binding.lifecycleOwner = viewLifecycleOwner
         binding.viewModel = callViewModel
 
-        callViewModel.toggleExtraActionMenuVisibilityEvent.observe(viewLifecycleOwner) {
-            /*it.consume { opened ->
-                val visibility = if (opened) View.VISIBLE else View.GONE
-                binding.extraActions.slideInExtraActionsMenu(binding.root as ViewGroup, visibility)
-            }*/
+        sharedViewModel = requireActivity().run {
+            ViewModelProvider(this)[SharedCallViewModel::class.java]
+        }
+
+        callViewModel.fullScreenMode.observe(viewLifecycleOwner) { hide ->
+            sharedViewModel.toggleFullScreenEvent.value = Event(hide)
         }
 
         callViewModel.isRemoteDeviceTrusted.observe(viewLifecycleOwner) { trusted ->
diff --git a/app/src/main/java/org/linphone/ui/voip/fragment/GenericCallFragment.kt b/app/src/main/java/org/linphone/ui/voip/fragment/GenericCallFragment.kt
new file mode 100644
index 000000000..0dbd3f058
--- /dev/null
+++ b/app/src/main/java/org/linphone/ui/voip/fragment/GenericCallFragment.kt
@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2010-2023 Belledonne Communications SARL.
+ *
+ * This file is part of linphone-android
+ * (see https://www.linphone.org).
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.linphone.ui.voip.fragment
+
+import android.os.Bundle
+import android.view.View
+import androidx.annotation.UiThread
+import androidx.fragment.app.Fragment
+import androidx.lifecycle.ViewModelProvider
+import org.linphone.ui.voip.viewmodel.SharedCallViewModel
+
+@UiThread
+abstract class GenericCallFragment : Fragment() {
+    companion object {
+        private const val TAG = "[Generic Call Fragment]"
+    }
+
+    protected lateinit var sharedViewModel: SharedCallViewModel
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+
+        sharedViewModel = requireActivity().run {
+            ViewModelProvider(this)[SharedCallViewModel::class.java]
+        }
+    }
+}
diff --git a/app/src/main/java/org/linphone/ui/voip/model/ZrtpSasConfirmationDialogModel.kt b/app/src/main/java/org/linphone/ui/voip/model/ZrtpSasConfirmationDialogModel.kt
index 78217c7dd..748b2552d 100644
--- a/app/src/main/java/org/linphone/ui/voip/model/ZrtpSasConfirmationDialogModel.kt
+++ b/app/src/main/java/org/linphone/ui/voip/model/ZrtpSasConfirmationDialogModel.kt
@@ -31,8 +31,8 @@ class ZrtpSasConfirmationDialogModel @UiThread constructor(
     private val authTokenToListen: String
 ) : ViewModel() {
     companion object {
-        const val TAG = "[ZRTP SAS Confirmation Dialog]"
-        const val alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
+        private const val TAG = "[ZRTP SAS Confirmation Dialog]"
+        private const val alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
     }
 
     val message = MutableLiveData<String>()
diff --git a/app/src/main/java/org/linphone/ui/voip/viewmodel/CurrentCallViewModel.kt b/app/src/main/java/org/linphone/ui/voip/viewmodel/CurrentCallViewModel.kt
index 8cb6611d0..e80702c07 100644
--- a/app/src/main/java/org/linphone/ui/voip/viewmodel/CurrentCallViewModel.kt
+++ b/app/src/main/java/org/linphone/ui/voip/viewmodel/CurrentCallViewModel.kt
@@ -19,9 +19,12 @@
  */
 package org.linphone.ui.voip.viewmodel
 
+import android.Manifest
 import android.animation.ValueAnimator
+import android.content.pm.PackageManager
 import androidx.annotation.UiThread
 import androidx.annotation.WorkerThread
+import androidx.core.app.ActivityCompat
 import androidx.lifecycle.MutableLiveData
 import androidx.lifecycle.ViewModel
 import java.util.Locale
@@ -38,7 +41,7 @@ import org.linphone.utils.LinphoneUtils
 
 class CurrentCallViewModel @UiThread constructor() : ViewModel() {
     companion object {
-        const val TAG = "[Current Call ViewModel]"
+        private const val TAG = "[Current Call ViewModel]"
     }
 
     val contact = MutableLiveData<ContactAvatarModel>()
@@ -49,6 +52,8 @@ class CurrentCallViewModel @UiThread constructor() : ViewModel() {
 
     val isVideoEnabled = MutableLiveData<Boolean>()
 
+    val showSwitchCamera = MutableLiveData<Boolean>()
+
     val isOutgoing = MutableLiveData<Boolean>()
 
     val isMicrophoneMuted = MutableLiveData<Boolean>()
@@ -90,8 +95,6 @@ class CurrentCallViewModel @UiThread constructor() : ViewModel() {
         }
     }
 
-    val toggleExtraActionMenuVisibilityEvent = MutableLiveData<Event<Boolean>>()
-
     private lateinit var call: Call
 
     private val callListener = object : CallListenerStub() {
@@ -105,7 +108,13 @@ class CurrentCallViewModel @UiThread constructor() : ViewModel() {
             if (LinphoneUtils.isCallOutgoing(call.state)) {
                 isVideoEnabled.postValue(call.params.isVideoEnabled)
             } else {
-                isVideoEnabled.postValue(call.currentParams.isVideoEnabled)
+                val videoEnabled = call.currentParams.isVideoEnabled
+                isVideoEnabled.postValue(videoEnabled)
+
+                // Toggle full screen OFF when remote disables video
+                if (!videoEnabled && fullScreenMode.value == true) {
+                    fullScreenMode.postValue(false)
+                }
             }
         }
     }
@@ -127,6 +136,8 @@ class CurrentCallViewModel @UiThread constructor() : ViewModel() {
             } else {
                 Log.e("$TAG Failed to find outgoing call!")
             }
+
+            showSwitchCamera.postValue(coreContext.showSwitchCameraButton())
         }
     }
 
@@ -168,7 +179,14 @@ class CurrentCallViewModel @UiThread constructor() : ViewModel() {
 
     @UiThread
     fun toggleMuteMicrophone() {
-        // TODO: check record audio permission
+        if (ActivityCompat.checkSelfPermission(
+                coreContext.context,
+                Manifest.permission.RECORD_AUDIO
+            ) != PackageManager.PERMISSION_GRANTED
+        ) {
+            // TODO: request record audio permission
+            return
+        }
         coreContext.postOnCoreThread {
             call.microphoneMuted = !call.microphoneMuted
             isMicrophoneMuted.postValue(call.microphoneMuted)
@@ -182,7 +200,14 @@ class CurrentCallViewModel @UiThread constructor() : ViewModel() {
 
     @UiThread
     fun toggleVideo() {
-        // TODO: check video permission
+        if (ActivityCompat.checkSelfPermission(
+                coreContext.context,
+                Manifest.permission.CAMERA
+            ) != PackageManager.PERMISSION_GRANTED
+        ) {
+            // TODO: request video permission
+            return
+        }
 
         coreContext.postOnCoreThread { core ->
             if (::call.isInitialized) {
diff --git a/app/src/main/java/org/linphone/ui/voip/viewmodel/SharedCallViewModel.kt b/app/src/main/java/org/linphone/ui/voip/viewmodel/SharedCallViewModel.kt
new file mode 100644
index 000000000..580899f01
--- /dev/null
+++ b/app/src/main/java/org/linphone/ui/voip/viewmodel/SharedCallViewModel.kt
@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2010-2023 Belledonne Communications SARL.
+ *
+ * This file is part of linphone-android
+ * (see https://www.linphone.org).
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.linphone.ui.voip.viewmodel
+
+import androidx.annotation.UiThread
+import androidx.lifecycle.MutableLiveData
+import androidx.lifecycle.ViewModel
+import org.linphone.utils.Event
+
+class SharedCallViewModel @UiThread constructor() : ViewModel() {
+    val toggleFullScreenEvent = MutableLiveData<Event<Boolean>>()
+}
diff --git a/app/src/main/java/org/linphone/utils/FileUtils.kt b/app/src/main/java/org/linphone/utils/FileUtils.kt
index 4d6c3a49d..e8958857a 100644
--- a/app/src/main/java/org/linphone/utils/FileUtils.kt
+++ b/app/src/main/java/org/linphone/utils/FileUtils.kt
@@ -33,7 +33,7 @@ import org.linphone.core.tools.Log
 
 class FileUtils {
     companion object {
-        const val TAG = "[File Utils]"
+        private const val TAG = "[File Utils]"
 
         @AnyThread
         fun getProperFilePath(path: String): String {
diff --git a/app/src/main/java/org/linphone/utils/ImageUtils.kt b/app/src/main/java/org/linphone/utils/ImageUtils.kt
index e9f817b07..3327194d9 100644
--- a/app/src/main/java/org/linphone/utils/ImageUtils.kt
+++ b/app/src/main/java/org/linphone/utils/ImageUtils.kt
@@ -34,7 +34,7 @@ import org.linphone.core.tools.Log
 
 class ImageUtils {
     companion object {
-        const val TAG = "[Image Utils]"
+        private const val TAG = "[Image Utils]"
 
         @AnyThread
         fun getRoundBitmapFromUri(
diff --git a/app/src/main/res/drawable/in_call_button_background.xml b/app/src/main/res/drawable/in_call_button_background.xml
index 9db05d647..22033920b 100644
--- a/app/src/main/res/drawable/in_call_button_background.xml
+++ b/app/src/main/res/drawable/in_call_button_background.xml
@@ -2,6 +2,8 @@
 <selector xmlns:android="http://schemas.android.com/apk/res/android">
     <item android:state_enabled="false"
         android:drawable="@drawable/shape_round_in_call_disabled_button_background" />
+    <item android:state_pressed="true"
+        android:drawable="@drawable/shape_round_in_call_pressed_button_background" />
     <item
         android:drawable="@drawable/shape_round_in_call_button_background" />
 </selector>
\ No newline at end of file
diff --git a/app/src/main/res/drawable/shape_round_in_call_button_background.xml b/app/src/main/res/drawable/shape_round_in_call_button_background.xml
index 30b2406c1..912287c36 100644
--- a/app/src/main/res/drawable/shape_round_in_call_button_background.xml
+++ b/app/src/main/res/drawable/shape_round_in_call_button_background.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="oval">
     <size android:width="55dp" android:height="55dp" />
-    <solid android:color="@color/in_call_button_background_gray"/>
+    <solid android:color="@color/gray_5"/>
 </shape>
\ No newline at end of file
diff --git a/app/src/main/res/drawable/shape_round_in_call_pressed_button_background.xml b/app/src/main/res/drawable/shape_round_in_call_pressed_button_background.xml
new file mode 100644
index 000000000..f2c42f6c2
--- /dev/null
+++ b/app/src/main/res/drawable/shape_round_in_call_pressed_button_background.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="oval">
+    <size android:width="55dp" android:height="55dp" />
+    <solid android:color="@color/gray_4"/>
+</shape>
\ No newline at end of file
diff --git a/app/src/main/res/layout/call_start_fragment.xml b/app/src/main/res/layout/call_start_fragment.xml
index 627ccb117..08be0c296 100644
--- a/app/src/main/res/layout/call_start_fragment.xml
+++ b/app/src/main/res/layout/call_start_fragment.xml
@@ -82,6 +82,7 @@
             android:padding="10dp"
             android:src="@drawable/users_three"
             android:background="@drawable/shape_orange_round"
+            app:tint="@color/white"
             app:layout_constraintStart_toStartOf="parent"
             app:layout_constraintTop_toBottomOf="@id/search_bar" />
 
diff --git a/app/src/main/res/layout/voip_active_call_fragment.xml b/app/src/main/res/layout/voip_active_call_fragment.xml
index 43a960ada..b0bf66c01 100644
--- a/app/src/main/res/layout/voip_active_call_fragment.xml
+++ b/app/src/main/res/layout/voip_active_call_fragment.xml
@@ -21,6 +21,7 @@
             android:layout_height="24dp"
             android:layout_marginStart="10dp"
             android:adjustViewBounds="true"
+            android:visibility="@{viewModel.fullScreenMode ? View.GONE : View.VISIBLE}"
             android:src="@{viewModel.isOutgoing ? @drawable/outgoing_call : @drawable/incoming_call, default=@drawable/outgoing_call}"
             app:layout_constraintStart_toStartOf="parent"
             app:layout_constraintTop_toTopOf="@id/call_direction_label"
@@ -33,6 +34,7 @@
             android:layout_height="wrap_content"
             android:layout_marginStart="10dp"
             android:layout_marginTop="7dp"
+            android:visibility="@{viewModel.fullScreenMode ? View.GONE : View.VISIBLE}"
             android:text="@{viewModel.isOutgoing ? `Outgoing call` : `Incoming call`, default=`Outgoing call`}"
             android:textColor="@color/white"
             android:textSize="16sp"
@@ -48,6 +50,7 @@
             android:textColor="@color/white"
             android:textSize="16sp"
             android:text="@string/vertical_separator"
+            android:visibility="@{viewModel.fullScreenMode ? View.GONE : View.VISIBLE}"
             app:layout_constraintStart_toEndOf="@id/call_direction_label"
             app:layout_constraintTop_toTopOf="@id/call_direction_label"
             app:layout_constraintBottom_toBottomOf="@id/call_direction_label"/>
@@ -60,6 +63,7 @@
             android:layout_marginStart="5dp"
             android:textColor="@color/white"
             android:textSize="16sp"
+            android:visibility="@{viewModel.fullScreenMode ? View.GONE : View.VISIBLE}"
             app:layout_constraintStart_toEndOf="@id/separator"
             app:layout_constraintTop_toTopOf="@id/call_direction_label"
             app:layout_constraintBottom_toBottomOf="@id/call_direction_label"/>
@@ -67,12 +71,12 @@
         <ImageView
             android:onClick="@{() -> viewModel.switchCamera()}"
             android:id="@+id/switch_camera"
-            android:layout_width="24dp"
-            android:layout_height="24dp"
+            android:layout_width="34dp"
+            android:layout_height="34dp"
+            android:padding="5dp"
             android:layout_marginEnd="10dp"
-            android:adjustViewBounds="true"
             android:src="@drawable/camera_rotate"
-            android:visibility="@{viewModel.isVideoEnabled() ? View.VISIBLE : View.GONE}"
+            android:visibility="@{!viewModel.fullScreenMode &amp;&amp; viewModel.isVideoEnabled &amp;&amp; viewModel.showSwitchCamera ? View.VISIBLE : View.GONE}"
             app:layout_constraintTop_toTopOf="@id/call_direction_label"
             app:layout_constraintBottom_toBottomOf="@id/call_direction_label"
             app:layout_constraintEnd_toEndOf="parent"
@@ -176,6 +180,7 @@
             android:layout_width="0dp"
             android:layout_height="@dimen/in_call_all_actions_menu_height"
             android:translationY="@{viewModel.extraActionsMenuTranslateY}"
+            android:visibility="@{viewModel.fullScreenMode ? View.GONE : View.VISIBLE}"
             app:layout_constraintStart_toStartOf="parent"
             app:layout_constraintEnd_toEndOf="parent"
             app:layout_constraintBottom_toBottomOf="parent"/>
diff --git a/app/src/main/res/values/colors.xml b/app/src/main/res/values/colors.xml
index f8dbaba4d..3ced8fa5f 100644
--- a/app/src/main/res/values/colors.xml
+++ b/app/src/main/res/values/colors.xml
@@ -34,5 +34,4 @@
 
     <color name="in_call_black">#070707</color>
     <color name="in_call_gray">#2E3030</color>
-    <color name="in_call_button_background_gray">#4E4E4E</color>
 </resources>
\ No newline at end of file