diff --git a/app/src/main/java/org/thoughtcrime/securesms/calls/WebRtcCallActivity.kt b/app/src/main/java/org/thoughtcrime/securesms/calls/WebRtcCallActivity.kt
index 394282e551..d1d446f1d9 100644
--- a/app/src/main/java/org/thoughtcrime/securesms/calls/WebRtcCallActivity.kt
+++ b/app/src/main/java/org/thoughtcrime/securesms/calls/WebRtcCallActivity.kt
@@ -18,7 +18,9 @@ import dagger.hilt.android.AndroidEntryPoint
 import kotlinx.android.synthetic.main.activity_conversation_v2.*
 import kotlinx.android.synthetic.main.activity_webrtc.*
 import kotlinx.coroutines.Job
+import kotlinx.coroutines.delay
 import kotlinx.coroutines.flow.collect
+import kotlinx.coroutines.isActive
 import kotlinx.coroutines.launch
 import network.loki.messenger.R
 import org.session.libsession.avatars.ProfileContactPhoto
@@ -33,6 +35,7 @@ import org.thoughtcrime.securesms.webrtc.AudioManagerCommand
 import org.thoughtcrime.securesms.webrtc.CallViewModel
 import org.thoughtcrime.securesms.webrtc.CallViewModel.State.*
 import org.thoughtcrime.securesms.webrtc.audio.SignalAudioManager.AudioDevice.*
+import java.time.Duration
 import java.util.*
 
 @AndroidEntryPoint
@@ -44,6 +47,8 @@ class WebRtcCallActivity: PassphraseRequiredActionBarActivity() {
         const val ACTION_END = "end-call"
 
         const val BUSY_SIGNAL_DELAY_FINISH = 5500L
+
+        val CALL_DURATION_FORMAT = 
     }
 
     private val viewModel by viewModels<CallViewModel>()
@@ -186,6 +191,20 @@ class WebRtcCallActivity: PassphraseRequiredActionBarActivity() {
                 }
             }
 
+            launch {
+                while (isActive) {
+                    val startTime = viewModel.callStartTime
+                    if (startTime == -1L) {
+                        callTime.isVisible = false
+                    } else {
+                        callTime.isVisible = true
+                        callTime.text = Duration.Duration.ofMillis(startTime)
+                    }
+
+                    delay(5_000) // update the call duration less frequently
+                }
+            }
+
             launch {
                 viewModel.localAudioEnabledState.collect { isEnabled ->
                     // change drawable background to enabled or not
diff --git a/app/src/main/java/org/thoughtcrime/securesms/webrtc/CallManager.kt b/app/src/main/java/org/thoughtcrime/securesms/webrtc/CallManager.kt
index d1264ec21d..738af276d1 100644
--- a/app/src/main/java/org/thoughtcrime/securesms/webrtc/CallManager.kt
+++ b/app/src/main/java/org/thoughtcrime/securesms/webrtc/CallManager.kt
@@ -27,6 +27,7 @@ import org.thoughtcrime.securesms.webrtc.locks.LockManager
 import org.thoughtcrime.securesms.webrtc.video.CameraEventListener
 import org.thoughtcrime.securesms.webrtc.video.CameraState
 import org.webrtc.*
+import org.webrtc.PeerConnection.IceConnectionState
 import java.nio.ByteBuffer
 import java.util.*
 import java.util.concurrent.Executors
@@ -104,8 +105,6 @@ class CallManager(context: Context, audioManager: AudioManagerCompat, private va
     val currentConnectionState
         get() = (_connectionEvents.value as CallStateUpdate).state
 
-    private val networkExecutor = Executors.newSingleThreadExecutor()
-
     private var eglBase: EglBase? = null
 
     var pendingOffer: String? = null
@@ -117,6 +116,7 @@ class CallManager(context: Context, audioManager: AudioManagerCompat, private va
         field = value
         _recipientEvents.value = RecipientUpdate(value)
     }
+    var callStartTime: Long = -1
     var isReestablishing: Boolean = false
 
     private var peerConnection: PeerConnectionWrapper? = null
@@ -209,8 +209,11 @@ class CallManager(context: Context, audioManager: AudioManagerCompat, private va
         peerConnectionObservers.forEach { listener -> listener.onSignalingChange(newState) }
     }
 
-    override fun onIceConnectionChange(newState: PeerConnection.IceConnectionState) {
+    override fun onIceConnectionChange(newState: IceConnectionState) {
         peerConnectionObservers.forEach { listener -> listener.onIceConnectionChange(newState) }
+        if (newState == IceConnectionState.CONNECTED) {
+            callStartTime = System.currentTimeMillis()
+        }
     }
 
     override fun onIceConnectionReceivingChange(receiving: Boolean) {
@@ -340,6 +343,9 @@ class CallManager(context: Context, audioManager: AudioManagerCompat, private va
         localCameraState = CameraState.UNKNOWN
         recipient = null
         callId = null
+        pendingOfferTime = -1
+        pendingOffer = null
+        callStartTime = -1
         _audioEvents.value = AudioEnabled(false)
         _videoEvents.value = VideoEnabled(false)
         _remoteVideoEvents.value = VideoEnabled(false)
diff --git a/app/src/main/java/org/thoughtcrime/securesms/webrtc/CallViewModel.kt b/app/src/main/java/org/thoughtcrime/securesms/webrtc/CallViewModel.kt
index f1265fee40..93667ed92e 100644
--- a/app/src/main/java/org/thoughtcrime/securesms/webrtc/CallViewModel.kt
+++ b/app/src/main/java/org/thoughtcrime/securesms/webrtc/CallViewModel.kt
@@ -11,6 +11,23 @@ import javax.inject.Inject
 @HiltViewModel
 class CallViewModel @Inject constructor(private val callManager: CallManager): ViewModel() {
 
+    enum class State {
+        CALL_PENDING,
+
+        CALL_PRE_INIT,
+        CALL_INCOMING,
+        CALL_OUTGOING,
+        CALL_CONNECTED,
+        CALL_RINGING,
+        CALL_BUSY,
+        CALL_DISCONNECTED,
+
+        NETWORK_FAILURE,
+        RECIPIENT_UNAVAILABLE,
+        NO_SUCH_USER,
+        UNTRUSTED_IDENTITY,
+    }
+
     val localRenderer: SurfaceViewRenderer?
     get() = callManager.localRenderer
 
@@ -31,24 +48,6 @@ class CallViewModel @Inject constructor(private val callManager: CallManager): V
     val isSpeaker: Boolean
         get() = _isSpeaker
 
-
-    enum class State {
-        CALL_PENDING,
-
-        CALL_PRE_INIT,
-        CALL_INCOMING,
-        CALL_OUTGOING,
-        CALL_CONNECTED,
-        CALL_RINGING,
-        CALL_BUSY,
-        CALL_DISCONNECTED,
-
-        NETWORK_FAILURE,
-        RECIPIENT_UNAVAILABLE,
-        NO_SUCH_USER,
-        UNTRUSTED_IDENTITY,
-    }
-
     val audioDeviceState
         get() = callManager.audioDeviceEvents
                 .onEach {
@@ -73,4 +72,7 @@ class CallViewModel @Inject constructor(private val callManager: CallManager): V
     val recipient
         get() = callManager.recipientEvents
 
+    val callStartTime: Long
+        get() = callManager.callStartTime
+
 }
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_webrtc.xml b/app/src/main/res/layout/activity_webrtc.xml
index f1fcc0ebf4..8197415205 100644
--- a/app/src/main/res/layout/activity_webrtc.xml
+++ b/app/src/main/res/layout/activity_webrtc.xml
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:theme="@style/Theme.Session.CallActivity"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     android:keepScreenOn="true"
     android:layout_width="match_parent"
@@ -41,6 +42,17 @@
         app:layout_constraintTop_toBottomOf="@id/remote_recipient"
         tools:visibility="visible" />
 
+    <TextView
+        android:textSize="@dimen/text_size"
+        android:textColor="@color/text"
+        tools:text="00:05:20"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintBottom_toTopOf="@+id/controlGroupBarrier"
+        android:layout_marginBottom="@dimen/medium_spacing"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"/>
+
     <FrameLayout
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintTop_toTopOf="parent"
@@ -183,4 +195,13 @@
         android:id="@+id/incomingControlGroup"
         app:constraint_referenced_ids="acceptCallButton,declineCallButton"/>
 
+    <androidx.constraintlayout.widget.Barrier
+        android:id="@+id/controlGroupBarrier"
+        app:barrierDirection="top"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal"
+        app:constraint_referenced_ids="switchCameraButton,enableCameraButton,microphoneButton,speakerPhoneButton"
+        />
+
 </androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/values/themes.xml b/app/src/main/res/values/themes.xml
index c895f8c4c3..c7a03ad4f1 100644
--- a/app/src/main/res/values/themes.xml
+++ b/app/src/main/res/values/themes.xml
@@ -137,8 +137,7 @@
     </style>
 
     <style name="Theme.Session.CallActivity" parent="Theme.Session.ForceDark">
-        <item name="windowActionBar">false</item>
-        <item name="windowNoTitle">true</item>
+        <!-- in case we want to add customisation like no title -->
     </style>
 
     <style name="Theme.Session.BottomSheet" parent="@style/Theme.AppCompat.DayNight.Dialog">