diff --git a/app/src/main/java/org/linphone/notifications/NotificationsManager.kt b/app/src/main/java/org/linphone/notifications/NotificationsManager.kt
index fa99d64d5..63c8edfbd 100644
--- a/app/src/main/java/org/linphone/notifications/NotificationsManager.kt
+++ b/app/src/main/java/org/linphone/notifications/NotificationsManager.kt
@@ -39,7 +39,6 @@ import androidx.core.app.NotificationCompat
 import androidx.core.app.NotificationManagerCompat
 import androidx.core.app.Person
 import androidx.core.app.RemoteInput
-import androidx.core.content.ContextCompat
 import androidx.core.content.LocusIdCompat
 import org.linphone.LinphoneApplication.Companion.coreContext
 import org.linphone.LinphoneApplication.Companion.corePreferences
@@ -703,7 +702,7 @@ class NotificationsManager @MainThread constructor(private val context: Context)
             setAutoCancel(false)
             setShowWhen(true)
             setOngoing(true)
-            color = ContextCompat.getColor(context, R.color.orange_main_500)
+            color = AppUtils.getColor(R.color.orange_main_500)
             setFullScreenIntent(pendingIntent, true)
         }
 
@@ -759,7 +758,7 @@ class NotificationsManager @MainThread constructor(private val context: Context)
             .setSmallIcon(R.drawable.chat_text)
             .setAutoCancel(true)
             .setLargeIcon(largeIcon)
-            .setColor(ContextCompat.getColor(context, R.color.orange_main_500))
+            .setColor(AppUtils.getColor(R.color.orange_main_500))
             .setCategory(NotificationCompat.CATEGORY_MESSAGE)
             .setGroup(CHAT_NOTIFICATIONS_GROUP)
             .setVisibility(NotificationCompat.VISIBILITY_PRIVATE)
diff --git a/app/src/main/java/org/linphone/ui/call/fragment/ActiveCallFragment.kt b/app/src/main/java/org/linphone/ui/call/fragment/ActiveCallFragment.kt
index 4aab752f0..f4788ca6d 100644
--- a/app/src/main/java/org/linphone/ui/call/fragment/ActiveCallFragment.kt
+++ b/app/src/main/java/org/linphone/ui/call/fragment/ActiveCallFragment.kt
@@ -252,6 +252,8 @@ class ActiveCallFragment : GenericCallFragment() {
 
             override fun onSlide(bottomSheet: View, slideOffset: Float) {}
         })
+
+        binding.bottomBar.chat.isEnabled = false // TODO FIXME : remove later when chat will be available
     }
 
     @SuppressLint("ClickableViewAccessibility")
diff --git a/app/src/main/java/org/linphone/ui/main/MainActivity.kt b/app/src/main/java/org/linphone/ui/main/MainActivity.kt
index 68b44ef25..b47cc6a11 100644
--- a/app/src/main/java/org/linphone/ui/main/MainActivity.kt
+++ b/app/src/main/java/org/linphone/ui/main/MainActivity.kt
@@ -30,12 +30,14 @@ import androidx.annotation.UiThread
 import androidx.appcompat.app.AppCompatActivity
 import androidx.core.view.WindowCompat
 import androidx.databinding.DataBindingUtil
+import androidx.lifecycle.ViewModelProvider
 import androidx.lifecycle.lifecycleScope
 import androidx.navigation.NavController
 import androidx.navigation.findNavController
 import org.linphone.LinphoneApplication.Companion.coreContext
 import org.linphone.R
 import org.linphone.databinding.MainActivityBinding
+import org.linphone.ui.main.viewmodel.MainViewModel
 import org.linphone.utils.AppUtils
 import org.linphone.utils.slideInToastFromTopForDuration
 
@@ -51,6 +53,8 @@ class MainActivity : AppCompatActivity() {
 
     private lateinit var binding: MainActivityBinding
 
+    private lateinit var viewModel: MainViewModel
+
     override fun onCreate(savedInstanceState: Bundle?) {
         WindowCompat.setDecorFitsSystemWindows(window, true)
         super.onCreate(savedInstanceState)
@@ -67,6 +71,28 @@ class MainActivity : AppCompatActivity() {
 
         binding = DataBindingUtil.setContentView(this, R.layout.main_activity)
         binding.lifecycleOwner = this
+
+        viewModel = run {
+            ViewModelProvider(this)[MainViewModel::class.java]
+        }
+        binding.viewModel = viewModel
+
+        viewModel.changeSystemTopBarColorToInCallEvent.observe(this) {
+            it.consume { useInCallColor ->
+                val color = if (useInCallColor) {
+                    AppUtils.getColor(R.color.green_success_500)
+                } else {
+                    AppUtils.getColor(R.color.orange_main_500)
+                }
+                window.statusBarColor = color
+            }
+        }
+
+        viewModel.goBackToCallEvent.observe(this) {
+            it.consume {
+                coreContext.showCallActivity()
+            }
+        }
     }
 
     override fun onPostCreate(savedInstanceState: Bundle?) {
diff --git a/app/src/main/java/org/linphone/ui/main/fragment/AbstractTopBarFragment.kt b/app/src/main/java/org/linphone/ui/main/fragment/AbstractTopBarFragment.kt
index 29ab7ef22..cc003b7aa 100644
--- a/app/src/main/java/org/linphone/ui/main/fragment/AbstractTopBarFragment.kt
+++ b/app/src/main/java/org/linphone/ui/main/fragment/AbstractTopBarFragment.kt
@@ -20,9 +20,6 @@
 package org.linphone.ui.main.fragment
 
 import androidx.annotation.UiThread
-import androidx.core.content.ContextCompat
-import org.linphone.LinphoneApplication
-import org.linphone.R
 import org.linphone.ui.main.MainActivity
 import org.linphone.ui.main.viewmodel.AbstractTopBarViewModel
 
@@ -36,28 +33,5 @@ abstract class AbstractTopBarFragment : GenericFragment() {
                 (requireActivity() as MainActivity).toggleDrawerMenu()
             }
         }
-
-        viewModel.changeSystemTopBarColorToInCallEvent.observe(viewLifecycleOwner) {
-            it.consume { useInCallColor ->
-                val color = if (useInCallColor) {
-                    ContextCompat.getColor(
-                        requireContext(),
-                        R.color.green_success_500
-                    )
-                } else {
-                    ContextCompat.getColor(
-                        requireContext(),
-                        R.color.orange_main_500
-                    )
-                }
-                requireActivity().window.statusBarColor = color
-            }
-        }
-
-        viewModel.goBackToCallEvent.observe(viewLifecycleOwner) {
-            it.consume {
-                LinphoneApplication.coreContext.showCallActivity()
-            }
-        }
     }
 }
diff --git a/app/src/main/java/org/linphone/ui/main/viewmodel/AbstractTopBarViewModel.kt b/app/src/main/java/org/linphone/ui/main/viewmodel/AbstractTopBarViewModel.kt
index 0a8c9d61a..bdbc7a707 100644
--- a/app/src/main/java/org/linphone/ui/main/viewmodel/AbstractTopBarViewModel.kt
+++ b/app/src/main/java/org/linphone/ui/main/viewmodel/AbstractTopBarViewModel.kt
@@ -20,17 +20,12 @@
 package org.linphone.ui.main.viewmodel
 
 import androidx.annotation.UiThread
-import androidx.annotation.WorkerThread
 import androidx.lifecycle.MutableLiveData
 import androidx.lifecycle.ViewModel
 import org.linphone.LinphoneApplication.Companion.coreContext
-import org.linphone.core.Call
-import org.linphone.core.Core
-import org.linphone.core.CoreListenerStub
 import org.linphone.core.tools.Log
 import org.linphone.ui.main.model.AccountModel
 import org.linphone.utils.Event
-import org.linphone.utils.LinphoneUtils
 
 open class AbstractTopBarViewModel @UiThread constructor() : ViewModel() {
     companion object {
@@ -45,12 +40,6 @@ open class AbstractTopBarViewModel @UiThread constructor() : ViewModel() {
 
     val searchFilter = MutableLiveData<String>()
 
-    val atLastOneCall = MutableLiveData<Boolean>()
-
-    val callDisplayName = MutableLiveData<String>()
-
-    val callStatus = MutableLiveData<String>()
-
     val focusSearchBarEvent: MutableLiveData<Event<Boolean>> by lazy {
         MutableLiveData<Event<Boolean>>()
     }
@@ -59,46 +48,9 @@ open class AbstractTopBarViewModel @UiThread constructor() : ViewModel() {
         MutableLiveData<Event<Boolean>>()
     }
 
-    val changeSystemTopBarColorToInCallEvent: MutableLiveData<Event<Boolean>> by lazy {
-        MutableLiveData<Event<Boolean>>()
-    }
-
-    val goBackToCallEvent: MutableLiveData<Event<Boolean>> by lazy {
-        MutableLiveData<Event<Boolean>>()
-    }
-
-    private val coreListener = object : CoreListenerStub() {
-        @WorkerThread
-        override fun onLastCallEnded(core: Core) {
-            Log.i("$TAG Last call ended, asking fragment to change back status bar color")
-            changeSystemTopBarColorToInCallEvent.postValue(Event(false))
-        }
-
-        @WorkerThread
-        override fun onCallStateChanged(
-            core: Core,
-            call: Call,
-            state: Call.State?,
-            message: String
-        ) {
-            if (core.callsNb > 0) {
-                updateCurrentCallInfo()
-            }
-            atLastOneCall.postValue(core.callsNb > 0)
-        }
-    }
-
     init {
         searchBarVisible.value = false
 
-        coreContext.postOnCoreThread { core ->
-            core.addListener(coreListener)
-            if (core.callsNb > 0) {
-                updateCurrentCallInfo()
-            }
-            atLastOneCall.postValue(core.callsNb > 0)
-        }
-
         update()
     }
 
@@ -107,7 +59,6 @@ open class AbstractTopBarViewModel @UiThread constructor() : ViewModel() {
         super.onCleared()
 
         coreContext.postOnCoreThread { core ->
-            core.removeListener(coreListener)
             account.value?.destroy()
         }
     }
@@ -143,44 +94,6 @@ open class AbstractTopBarViewModel @UiThread constructor() : ViewModel() {
                 val defaultAccount = core.defaultAccount ?: core.accountList.first()
                 account.postValue(AccountModel(defaultAccount))
             }
-
-            if (core.callsNb > 0) {
-                updateCurrentCallInfo()
-            }
-            atLastOneCall.postValue(core.callsNb > 0)
         }
     }
-
-    @UiThread
-    fun goBackToCall() {
-        goBackToCallEvent.value = Event(true)
-    }
-
-    @WorkerThread
-    private fun updateCurrentCallInfo() {
-        val core = coreContext.core
-        val currentCall = core.currentCall
-        if (currentCall != null) {
-            val contact = coreContext.contactsManager.findContactByAddress(
-                currentCall.remoteAddress
-            )
-            callDisplayName.postValue(
-                contact?.name ?: LinphoneUtils.getDisplayName(currentCall.remoteAddress)
-            )
-            callStatus.postValue(LinphoneUtils.callStateToString(currentCall.state))
-        } else {
-            val firstCall = core.calls.firstOrNull()
-            if (firstCall != null) {
-                val contact = coreContext.contactsManager.findContactByAddress(
-                    firstCall.remoteAddress
-                )
-                callDisplayName.postValue(
-                    contact?.name ?: LinphoneUtils.getDisplayName(firstCall.remoteAddress)
-                )
-                callStatus.postValue(LinphoneUtils.callStateToString(firstCall.state))
-            }
-        }
-        Log.i("$TAG At least a call, asking fragment to change status bar color")
-        changeSystemTopBarColorToInCallEvent.postValue(Event(true))
-    }
 }
diff --git a/app/src/main/java/org/linphone/ui/main/viewmodel/MainViewModel.kt b/app/src/main/java/org/linphone/ui/main/viewmodel/MainViewModel.kt
new file mode 100644
index 000000000..44b60adfb
--- /dev/null
+++ b/app/src/main/java/org/linphone/ui/main/viewmodel/MainViewModel.kt
@@ -0,0 +1,126 @@
+/*
+ * 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.main.viewmodel
+
+import androidx.annotation.UiThread
+import androidx.annotation.WorkerThread
+import androidx.lifecycle.MutableLiveData
+import androidx.lifecycle.ViewModel
+import org.linphone.LinphoneApplication.Companion.coreContext
+import org.linphone.core.Call
+import org.linphone.core.Core
+import org.linphone.core.CoreListenerStub
+import org.linphone.core.tools.Log
+import org.linphone.utils.Event
+import org.linphone.utils.LinphoneUtils
+
+class MainViewModel @UiThread constructor() : ViewModel() {
+    companion object {
+        private const val TAG = "[Main ViewModel]"
+    }
+
+    val atLastOneCall = MutableLiveData<Boolean>()
+
+    val callDisplayName = MutableLiveData<String>()
+
+    val callStatus = MutableLiveData<String>()
+
+    val changeSystemTopBarColorToInCallEvent: MutableLiveData<Event<Boolean>> by lazy {
+        MutableLiveData<Event<Boolean>>()
+    }
+
+    val goBackToCallEvent: MutableLiveData<Event<Boolean>> by lazy {
+        MutableLiveData<Event<Boolean>>()
+    }
+
+    private val coreListener = object : CoreListenerStub() {
+        @WorkerThread
+        override fun onLastCallEnded(core: Core) {
+            Log.i("$TAG Last call ended, asking fragment to change back status bar color")
+            changeSystemTopBarColorToInCallEvent.postValue(Event(false))
+        }
+
+        @WorkerThread
+        override fun onCallStateChanged(
+            core: Core,
+            call: Call,
+            state: Call.State?,
+            message: String
+        ) {
+            if (core.callsNb > 0) {
+                updateCurrentCallInfo()
+            }
+            atLastOneCall.postValue(core.callsNb > 0)
+        }
+    }
+
+    init {
+        coreContext.postOnCoreThread { core ->
+            core.addListener(coreListener)
+
+            if (core.callsNb > 0) {
+                updateCurrentCallInfo()
+            }
+            atLastOneCall.postValue(core.callsNb > 0)
+        }
+    }
+
+    @UiThread
+    override fun onCleared() {
+        super.onCleared()
+
+        coreContext.postOnCoreThread { core ->
+            core.removeListener(coreListener)
+        }
+    }
+
+    @UiThread
+    fun goBackToCall() {
+        goBackToCallEvent.value = Event(true)
+    }
+
+    @WorkerThread
+    private fun updateCurrentCallInfo() {
+        val core = coreContext.core
+        val currentCall = core.currentCall
+        if (currentCall != null) {
+            val contact = coreContext.contactsManager.findContactByAddress(
+                currentCall.remoteAddress
+            )
+            callDisplayName.postValue(
+                contact?.name ?: LinphoneUtils.getDisplayName(currentCall.remoteAddress)
+            )
+            callStatus.postValue(LinphoneUtils.callStateToString(currentCall.state))
+        } else {
+            val firstCall = core.calls.firstOrNull()
+            if (firstCall != null) {
+                val contact = coreContext.contactsManager.findContactByAddress(
+                    firstCall.remoteAddress
+                )
+                callDisplayName.postValue(
+                    contact?.name ?: LinphoneUtils.getDisplayName(firstCall.remoteAddress)
+                )
+                callStatus.postValue(LinphoneUtils.callStateToString(firstCall.state))
+            }
+        }
+        Log.i("$TAG At least a call, asking fragment to change status bar color")
+        changeSystemTopBarColorToInCallEvent.postValue(Event(true))
+    }
+}
diff --git a/app/src/main/java/org/linphone/utils/AppUtils.kt b/app/src/main/java/org/linphone/utils/AppUtils.kt
index dd54d9c30..fe56060ed 100644
--- a/app/src/main/java/org/linphone/utils/AppUtils.kt
+++ b/app/src/main/java/org/linphone/utils/AppUtils.kt
@@ -34,11 +34,14 @@ import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import androidx.annotation.AnyThread
+import androidx.annotation.ColorInt
+import androidx.annotation.ColorRes
 import androidx.annotation.DimenRes
 import androidx.annotation.DrawableRes
 import androidx.annotation.MainThread
 import androidx.annotation.StringRes
 import androidx.core.app.ActivityCompat
+import androidx.core.content.ContextCompat
 import androidx.databinding.DataBindingUtil
 import androidx.emoji2.text.EmojiCompat
 import java.util.Locale
@@ -66,6 +69,14 @@ class AppUtils {
             return coreContext.context.getString(id, args)
         }
 
+        @AnyThread @ColorInt
+        fun getColor(@ColorRes colorId: Int): Int {
+            return ContextCompat.getColor(
+                coreContext.context,
+                colorId
+            )
+        }
+
         @MainThread
         fun getPipRatio(
             activity: Activity,
diff --git a/app/src/main/java/org/linphone/utils/DataBindingUtils.kt b/app/src/main/java/org/linphone/utils/DataBindingUtils.kt
index ae8f858bc..6f1031b6c 100644
--- a/app/src/main/java/org/linphone/utils/DataBindingUtils.kt
+++ b/app/src/main/java/org/linphone/utils/DataBindingUtils.kt
@@ -37,7 +37,6 @@ import androidx.annotation.UiThread
 import androidx.appcompat.widget.AppCompatEditText
 import androidx.appcompat.widget.AppCompatTextView
 import androidx.constraintlayout.widget.ConstraintLayout
-import androidx.core.content.ContextCompat
 import androidx.core.view.ViewCompat
 import androidx.core.view.WindowCompat
 import androidx.core.view.WindowInsetsCompat
@@ -214,12 +213,12 @@ fun ImageView.setPresenceIcon(presence: ConsolidatedPresence?) {
 
 @BindingAdapter("tint")
 fun ImageView.setTintColor(@ColorRes color: Int) {
-    setColorFilter(ContextCompat.getColor(context, color), PorterDuff.Mode.SRC_IN)
+    setColorFilter(AppUtils.getColor(color), PorterDuff.Mode.SRC_IN)
 }
 
 @BindingAdapter("textColor")
 fun AppCompatTextView.setColor(@ColorRes color: Int) {
-    setTextColor(ContextCompat.getColor(context, color))
+    setTextColor(AppUtils.getColor(color))
 }
 
 @UiThread
diff --git a/app/src/main/java/org/linphone/utils/DialogUtils.kt b/app/src/main/java/org/linphone/utils/DialogUtils.kt
index d21590247..49158d088 100644
--- a/app/src/main/java/org/linphone/utils/DialogUtils.kt
+++ b/app/src/main/java/org/linphone/utils/DialogUtils.kt
@@ -28,7 +28,6 @@ import android.view.LayoutInflater
 import android.view.Window
 import android.view.WindowManager
 import androidx.annotation.UiThread
-import androidx.core.content.ContextCompat
 import androidx.databinding.DataBindingUtil
 import androidx.databinding.ViewDataBinding
 import org.linphone.R
@@ -269,7 +268,7 @@ class DialogUtils {
             dialog.setContentView(binding.root)
 
             val d: Drawable = ColorDrawable(
-                ContextCompat.getColor(dialog.context, R.color.gray_main2_800_alpha_65)
+                AppUtils.getColor(R.color.gray_main2_800_alpha_65)
             )
             // d.alpha = 166
             dialog.window
diff --git a/app/src/main/res/color/in_call_button_tint_color.xml b/app/src/main/res/color/in_call_button_tint_color.xml
new file mode 100644
index 000000000..1eda9d9d7
--- /dev/null
+++ b/app/src/main/res/color/in_call_button_tint_color.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:state_enabled="false" android:color="@color/gray_500" />
+    <item android:state_pressed="true" android:color="@color/white" />
+    <item android:color="@color/white"/>
+</selector>
diff --git a/app/src/main/res/layout-land/call_extra_actions.xml b/app/src/main/res/layout-land/call_extra_actions.xml
index c3f26ca15..7198a10b7 100644
--- a/app/src/main/res/layout-land/call_extra_actions.xml
+++ b/app/src/main/res/layout-land/call_extra_actions.xml
@@ -14,6 +14,9 @@
         <variable
             name="callsListClickListener"
             type="View.OnClickListener" />
+        <variable
+            name="chatClickListener"
+            type="View.OnClickListener" />
         <variable
             name="viewModel"
             type="org.linphone.ui.call.viewmodel.CurrentCallViewModel" />
@@ -53,7 +56,7 @@
             app:layout_constraintEnd_toEndOf="@id/transfer_label"
             app:layout_constraintStart_toStartOf="@id/transfer_label"
             app:layout_constraintTop_toBottomOf="@id/main_actions"
-            app:tint="@color/white" />
+            app:tint="@color/in_call_button_tint_color" />
 
         <ImageView
             android:id="@+id/new_call"
@@ -68,7 +71,7 @@
             app:layout_constraintEnd_toEndOf="@id/new_call_label"
             app:layout_constraintStart_toStartOf="@id/new_call_label"
             app:layout_constraintTop_toBottomOf="@id/main_actions"
-            app:tint="@color/white" />
+            app:tint="@color/in_call_button_tint_color" />
 
         <ImageView
             android:id="@+id/calls_list"
@@ -83,7 +86,7 @@
             app:layout_constraintEnd_toEndOf="@id/calls_list_label"
             app:layout_constraintStart_toStartOf="@id/calls_list_label"
             app:layout_constraintTop_toBottomOf="@id/main_actions"
-            app:tint="@color/white" />
+            app:tint="@color/in_call_button_tint_color" />
 
         <androidx.appcompat.widget.AppCompatTextView
             style="@style/default_text_style"
@@ -115,10 +118,11 @@
             app:layout_constraintEnd_toEndOf="@id/dialer_label"
             app:layout_constraintStart_toStartOf="@id/dialer_label"
             app:layout_constraintTop_toBottomOf="@id/main_actions"
-            app:tint="@color/white" />
+            app:tint="@color/in_call_button_tint_color" />
 
         <ImageView
             android:id="@+id/chat"
+            android:onClick="@{chatClickListener}"
             android:layout_width="0dp"
             android:layout_height="@dimen/call_button_size"
             android:layout_marginTop="@dimen/call_extra_button_top_margin"
@@ -129,7 +133,7 @@
             app:layout_constraintEnd_toEndOf="@id/chat_label"
             app:layout_constraintStart_toStartOf="@id/chat_label"
             app:layout_constraintTop_toBottomOf="@id/main_actions"
-            app:tint="@color/white" />
+            app:tint="@color/in_call_button_tint_color" />
 
         <ImageView
             android:id="@+id/pause_call"
@@ -143,7 +147,7 @@
             app:layout_constraintEnd_toEndOf="@id/pause_call_label"
             app:layout_constraintStart_toStartOf="@id/pause_call_label"
             app:layout_constraintTop_toBottomOf="@id/main_actions"
-            app:tint="@color/white" />
+            app:tint="@color/in_call_button_tint_color" />
 
         <ImageView
             android:id="@+id/record_call"
@@ -159,7 +163,7 @@
             app:layout_constraintEnd_toEndOf="@id/record_call_label"
             app:layout_constraintStart_toStartOf="@id/record_call_label"
             app:layout_constraintTop_toBottomOf="@id/main_actions"
-            app:tint="@color/white" />
+            app:tint="@color/in_call_button_tint_color" />
 
         <androidx.appcompat.widget.AppCompatTextView
             style="@style/in_call_extra_action_label_style"
diff --git a/app/src/main/res/layout-land/contacts_list_fragment.xml b/app/src/main/res/layout-land/contacts_list_fragment.xml
index c3c770db0..896843d6b 100644
--- a/app/src/main/res/layout-land/contacts_list_fragment.xml
+++ b/app/src/main/res/layout-land/contacts_list_fragment.xml
@@ -43,7 +43,7 @@
 
             <include
                 android:id="@+id/top_bar"
-                layout="@layout/main_activity_top_bar"
+                layout="@layout/top_bar"
                 bind:viewModel="@{viewModel}"
                 android:layout_width="0dp"
                 android:layout_height="@dimen/top_bar_height"
@@ -65,17 +65,6 @@
                 app:layout_constraintTop_toTopOf="@id/top_bar"
                 app:layout_constraintBottom_toBottomOf="@id/top_bar" />
 
-            <include
-                android:id="@+id/in_call_top_bar"
-                layout="@layout/main_activity_in_call_top_bar"
-                bind:viewModel="@{viewModel}"
-                android:layout_width="0dp"
-                android:layout_height="@dimen/top_bar_height"
-                android:visibility="@{viewModel.atLastOneCall ? View.VISIBLE : View.GONE, default=gone}"
-                app:layout_constraintTop_toTopOf="parent"
-                app:layout_constraintStart_toEndOf="@id/bottom_nav_bar"
-                app:layout_constraintEnd_toEndOf="parent"/>
-
             <ImageView
                 android:id="@+id/background"
                 android:layout_width="0dp"
diff --git a/app/src/main/res/layout-land/history_list_fragment.xml b/app/src/main/res/layout-land/history_list_fragment.xml
index 359d00c0a..6a1e15fa3 100644
--- a/app/src/main/res/layout-land/history_list_fragment.xml
+++ b/app/src/main/res/layout-land/history_list_fragment.xml
@@ -39,7 +39,7 @@
 
             <include
                 android:id="@+id/top_bar"
-                layout="@layout/main_activity_top_bar"
+                layout="@layout/top_bar"
                 bind:viewModel="@{viewModel}"
                 android:layout_width="0dp"
                 android:layout_height="@dimen/top_bar_height"
@@ -61,17 +61,6 @@
                 app:layout_constraintTop_toTopOf="@id/top_bar"
                 app:layout_constraintBottom_toBottomOf="@id/top_bar" />
 
-            <include
-                android:id="@+id/in_call_top_bar"
-                layout="@layout/main_activity_in_call_top_bar"
-                bind:viewModel="@{viewModel}"
-                android:layout_width="0dp"
-                android:layout_height="@dimen/top_bar_height"
-                android:visibility="@{viewModel.atLastOneCall ? View.VISIBLE : View.GONE, default=gone}"
-                app:layout_constraintTop_toTopOf="parent"
-                app:layout_constraintStart_toEndOf="@id/bottom_nav_bar"
-                app:layout_constraintEnd_toEndOf="parent"/>
-
             <ImageView
                 android:id="@+id/background"
                 android:layout_width="0dp"
diff --git a/app/src/main/res/layout/call_extra_actions.xml b/app/src/main/res/layout/call_extra_actions.xml
index 22d9dd42c..2224269e0 100644
--- a/app/src/main/res/layout/call_extra_actions.xml
+++ b/app/src/main/res/layout/call_extra_actions.xml
@@ -14,6 +14,9 @@
         <variable
             name="callsListClickListener"
             type="View.OnClickListener" />
+        <variable
+            name="chatClickListener"
+            type="View.OnClickListener" />
         <variable
             name="viewModel"
             type="org.linphone.ui.call.viewmodel.CurrentCallViewModel" />
@@ -49,7 +52,7 @@
             android:padding="@dimen/call_button_icon_padding"
             android:background="@drawable/in_call_button_background"
             android:src="@drawable/transfer"
-            app:tint="@color/white"
+            app:tint="@color/in_call_button_tint_color"
             app:layout_constraintDimensionRatio="1:1"
             app:layout_constraintStart_toStartOf="@id/transfer_label"
             app:layout_constraintEnd_toEndOf="@id/transfer_label"
@@ -64,7 +67,7 @@
             android:padding="@dimen/call_button_icon_padding"
             android:background="@drawable/in_call_button_background"
             android:src="@drawable/phone_plus"
-            app:tint="@color/white"
+            app:tint="@color/in_call_button_tint_color"
             app:layout_constraintDimensionRatio="1:1"
             app:layout_constraintStart_toStartOf="@id/new_call_label"
             app:layout_constraintEnd_toEndOf="@id/new_call_label"
@@ -79,7 +82,7 @@
             android:padding="@dimen/call_button_icon_padding"
             android:background="@drawable/in_call_button_background"
             android:src="@drawable/calls_list"
-            app:tint="@color/white"
+            app:tint="@color/in_call_button_tint_color"
             app:layout_constraintDimensionRatio="1:1"
             app:layout_constraintStart_toStartOf="@id/calls_list_label"
             app:layout_constraintEnd_toEndOf="@id/calls_list_label"
@@ -111,7 +114,7 @@
             android:padding="@dimen/call_button_icon_padding"
             android:background="@drawable/in_call_button_background"
             android:src="@drawable/dialer"
-            app:tint="@color/white"
+            app:tint="@color/in_call_button_tint_color"
             app:layout_constraintDimensionRatio="1:1"
             app:layout_constraintStart_toStartOf="@id/dialer_label"
             app:layout_constraintEnd_toEndOf="@id/dialer_label"
@@ -119,13 +122,14 @@
 
         <ImageView
             android:id="@+id/chat"
+            android:onClick="@{chatClickListener}"
             android:layout_width="0dp"
             android:layout_height="@dimen/call_button_size"
             android:layout_marginTop="@dimen/call_extra_button_top_margin"
             android:padding="@dimen/call_button_icon_padding"
             android:background="@drawable/in_call_button_background"
             android:src="@drawable/chat_dots"
-            app:tint="@color/white"
+            app:tint="@color/in_call_button_tint_color"
             app:layout_constraintDimensionRatio="1:1"
             app:layout_constraintTop_toBottomOf="@id/transfer_label"
             app:layout_constraintStart_toStartOf="@id/transfer"
@@ -139,7 +143,7 @@
             android:padding="@dimen/call_button_icon_padding"
             android:background="@drawable/in_call_button_background"
             android:src="@drawable/pause_call"
-            app:tint="@color/white"
+            app:tint="@color/in_call_button_tint_color"
             app:layout_constraintDimensionRatio="1:1"
             app:layout_constraintTop_toBottomOf="@id/new_call_label"
             app:layout_constraintStart_toStartOf="@id/new_call"
@@ -155,7 +159,7 @@
             android:background="@drawable/in_call_button_background"
             android:src="@drawable/record"
             android:selected="@{viewModel.isRecording()}"
-            app:tint="@color/white"
+            app:tint="@color/in_call_button_tint_color"
             app:layout_constraintDimensionRatio="1:1"
             app:layout_constraintTop_toBottomOf="@id/calls_list_label"
             app:layout_constraintStart_toStartOf="@id/calls_list"
diff --git a/app/src/main/res/layout/call_main_actions.xml b/app/src/main/res/layout/call_main_actions.xml
index b153daa5a..50e139829 100644
--- a/app/src/main/res/layout/call_main_actions.xml
+++ b/app/src/main/res/layout/call_main_actions.xml
@@ -55,7 +55,7 @@
             android:padding="@dimen/call_button_icon_padding"
             android:src="@{viewModel.isVideoEnabled() ? @drawable/video_camera : @drawable/video_camera_slash, default=@drawable/video_camera}"
             android:background="@drawable/in_call_button_background"
-            app:tint="@color/white"
+            app:tint="@color/in_call_button_tint_color"
             app:layout_constraintHorizontal_bias="1"
             app:layout_constraintHorizontal_chainStyle="packed"
             app:layout_constraintBottom_toBottomOf="parent"
@@ -71,7 +71,7 @@
             android:padding="@dimen/call_button_icon_padding"
             android:src="@{viewModel.isMicrophoneMuted ? @drawable/microphone_slash : @drawable/microphone, default=@drawable/microphone}"
             android:background="@drawable/in_call_button_background"
-            app:tint="@color/white"
+            app:tint="@color/in_call_button_tint_color"
             app:layout_constraintBottom_toBottomOf="parent"
             app:layout_constraintStart_toEndOf="@id/toggle_video"
             app:layout_constraintEnd_toStartOf="@id/change_audio_output" />
@@ -85,7 +85,7 @@
             android:padding="@dimen/call_button_icon_padding"
             android:src="@{viewModel.isHeadsetEnabled ? @drawable/headset : viewModel.isBluetoothEnabled ? @drawable/bluetooth : viewModel.isSpeakerEnabled ? @drawable/speaker_high : @drawable/speaker_slash, default=@drawable/speaker_slash}"
             android:background="@drawable/in_call_button_background"
-            app:tint="@color/white"
+            app:tint="@color/in_call_button_tint_color"
             app:layout_constraintBottom_toBottomOf="parent"
             app:layout_constraintStart_toEndOf="@id/toggle_mute_mic"
             app:layout_constraintEnd_toEndOf="parent" />
diff --git a/app/src/main/res/layout/contacts_list_fragment.xml b/app/src/main/res/layout/contacts_list_fragment.xml
index 5045bb9fa..1064033cb 100644
--- a/app/src/main/res/layout/contacts_list_fragment.xml
+++ b/app/src/main/res/layout/contacts_list_fragment.xml
@@ -33,7 +33,7 @@
 
             <include
                 android:id="@+id/top_bar"
-                layout="@layout/main_activity_top_bar"
+                layout="@layout/top_bar"
                 bind:viewModel="@{viewModel}"
                 android:layout_width="0dp"
                 android:layout_height="@dimen/top_bar_height"
@@ -55,17 +55,6 @@
                 app:layout_constraintTop_toTopOf="@id/top_bar"
                 app:layout_constraintBottom_toBottomOf="@id/top_bar" />
 
-            <include
-                android:id="@+id/in_call_top_bar"
-                layout="@layout/main_activity_in_call_top_bar"
-                bind:viewModel="@{viewModel}"
-                android:layout_width="0dp"
-                android:layout_height="@dimen/top_bar_height"
-                android:visibility="@{viewModel.atLastOneCall ? View.VISIBLE : View.GONE, default=gone}"
-                app:layout_constraintTop_toTopOf="parent"
-                app:layout_constraintStart_toStartOf="parent"
-                app:layout_constraintEnd_toEndOf="parent"/>
-
             <ImageView
                 android:id="@+id/background"
                 android:layout_width="0dp"
diff --git a/app/src/main/res/layout/history_list_fragment.xml b/app/src/main/res/layout/history_list_fragment.xml
index bf0557470..b47aea629 100644
--- a/app/src/main/res/layout/history_list_fragment.xml
+++ b/app/src/main/res/layout/history_list_fragment.xml
@@ -39,7 +39,7 @@
 
             <include
                 android:id="@+id/top_bar"
-                layout="@layout/main_activity_top_bar"
+                layout="@layout/top_bar"
                 bind:viewModel="@{viewModel}"
                 android:layout_width="0dp"
                 android:layout_height="@dimen/top_bar_height"
@@ -61,17 +61,6 @@
                 app:layout_constraintTop_toTopOf="@id/top_bar"
                 app:layout_constraintBottom_toBottomOf="@id/top_bar" />
 
-            <include
-                android:id="@+id/in_call_top_bar"
-                layout="@layout/main_activity_in_call_top_bar"
-                bind:viewModel="@{viewModel}"
-                android:layout_width="0dp"
-                android:layout_height="@dimen/top_bar_height"
-                android:visibility="@{viewModel.atLastOneCall ? View.VISIBLE : View.GONE, default=gone}"
-                app:layout_constraintTop_toTopOf="parent"
-                app:layout_constraintStart_toStartOf="parent"
-                app:layout_constraintEnd_toEndOf="parent"/>
-
             <ImageView
                 android:id="@+id/background"
                 android:layout_width="0dp"
diff --git a/app/src/main/res/layout/main_activity.xml b/app/src/main/res/layout/main_activity.xml
index 8a9a2a44f..49b87b934 100644
--- a/app/src/main/res/layout/main_activity.xml
+++ b/app/src/main/res/layout/main_activity.xml
@@ -5,6 +5,9 @@
 
     <data>
         <import type="android.view.View" />
+        <variable
+            name="viewModel"
+            type="org.linphone.ui.main.viewmodel.MainViewModel" />
     </data>
 
     <androidx.drawerlayout.widget.DrawerLayout
@@ -19,6 +22,17 @@
             android:layout_width="match_parent"
             android:layout_height="match_parent">
 
+            <include
+                android:id="@+id/in_call_top_bar"
+                layout="@layout/main_activity_in_call_top_bar"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:visibility="@{viewModel.atLastOneCall ? View.VISIBLE : View.GONE, default=gone}"
+                app:viewModel="@{viewModel}"
+                app:layout_constraintTop_toTopOf="parent"
+                app:layout_constraintStart_toStartOf="parent"
+                app:layout_constraintEnd_toEndOf="parent"/>
+
             <androidx.fragment.app.FragmentContainerView
                 android:id="@+id/main_nav_host_fragment"
                 android:name="androidx.navigation.fragment.NavHostFragment"
@@ -28,7 +42,7 @@
                 app:navGraph="@navigation/main_nav_graph"
                 app:layout_constraintStart_toStartOf="parent"
                 app:layout_constraintEnd_toEndOf="parent"
-                app:layout_constraintTop_toTopOf="parent"
+                app:layout_constraintTop_toBottomOf="@id/in_call_top_bar"
                 app:layout_constraintBottom_toBottomOf="parent"/>
 
             <LinearLayout
diff --git a/app/src/main/res/layout/main_activity_in_call_top_bar.xml b/app/src/main/res/layout/main_activity_in_call_top_bar.xml
index b48984e79..d6362e5ec 100644
--- a/app/src/main/res/layout/main_activity_in_call_top_bar.xml
+++ b/app/src/main/res/layout/main_activity_in_call_top_bar.xml
@@ -7,12 +7,12 @@
         <import type="android.view.View" />
         <variable
             name="viewModel"
-            type="org.linphone.ui.main.viewmodel.AbstractTopBarViewModel" />
+            type="org.linphone.ui.main.viewmodel.MainViewModel" />
     </data>
 
     <androidx.constraintlayout.widget.ConstraintLayout
         android:layout_width="match_parent"
-        android:layout_height="@dimen/top_bar_height"
+        android:layout_height="wrap_content"
         android:background="@color/green_success_500"
         android:onClick="@{() -> viewModel.goBackToCall()}">
 
@@ -20,9 +20,11 @@
             style="@style/default_text_style_800"
             android:id="@+id/call_display_name"
             android:layout_width="0dp"
-            android:layout_height="@dimen/top_bar_height"
-            android:layout_marginStart="20dp"
+            android:layout_height="wrap_content"
+            android:layout_marginStart="16dp"
             android:layout_marginEnd="10dp"
+            android:layout_marginTop="5dp"
+            android:layout_marginBottom="5dp"
             android:gravity="center_vertical"
             android:text="@{viewModel.callDisplayName, default=`John Doe`}"
             android:textColor="@color/white"
@@ -32,21 +34,23 @@
             android:drawableTint="@color/white"
             app:layout_constraintEnd_toStartOf="@id/call_time"
             app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toTopOf="parent"/>
+            app:layout_constraintTop_toTopOf="parent"
+            app:layout_constraintBottom_toBottomOf="parent"/>
 
         <androidx.appcompat.widget.AppCompatTextView
             style="@style/default_text_style"
             android:id="@+id/call_time"
             android:layout_width="wrap_content"
-            android:layout_height="@dimen/top_bar_height"
-            android:layout_marginEnd="10dp"
+            android:layout_height="wrap_content"
+            android:layout_marginEnd="16dp"
             android:gravity="center_vertical"
             android:text="@{viewModel.callStatus, default=`Paused`}"
             android:textColor="@color/white"
             android:textSize="14sp"
             app:layout_constraintEnd_toEndOf="parent"
             app:layout_constraintStart_toEndOf="@id/call_display_name"
-            app:layout_constraintTop_toTopOf="parent"/>
+            app:layout_constraintTop_toTopOf="parent"
+            app:layout_constraintBottom_toBottomOf="parent"/>
 
     </androidx.constraintlayout.widget.ConstraintLayout>
 
diff --git a/app/src/main/res/layout/main_activity_top_bar.xml b/app/src/main/res/layout/top_bar.xml
similarity index 100%
rename from app/src/main/res/layout/main_activity_top_bar.xml
rename to app/src/main/res/layout/top_bar.xml