diff --git a/CHANGELOG.md b/CHANGELOG.md
index 51272e01b..fa3550ea6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -53,6 +53,7 @@ Group changes to describe their impact on the project, as follows:
 - Dialer will no longer make DTMF sound when pressing digits
 - Launcher activity
 - Global push notification setting in Network, use the switch in each Account instead
+- No longer need to monitor device rotation and give information to the Core, it does it by itself
 
 ## [4.5.6] - 2021-11-08
 
diff --git a/app/src/main/java/org/linphone/activities/GenericActivity.kt b/app/src/main/java/org/linphone/activities/GenericActivity.kt
index 221dfaa2b..f6c8a596e 100644
--- a/app/src/main/java/org/linphone/activities/GenericActivity.kt
+++ b/app/src/main/java/org/linphone/activities/GenericActivity.kt
@@ -25,7 +25,6 @@ import android.content.res.Configuration
 import android.os.Bundle
 import android.util.DisplayMetrics
 import android.view.Display
-import android.view.Surface
 import androidx.appcompat.app.AppCompatActivity
 import androidx.appcompat.app.AppCompatDelegate
 import androidx.lifecycle.lifecycleScope
@@ -100,18 +99,6 @@ abstract class GenericActivity : AppCompatActivity() {
     override fun onResume() {
         super.onResume()
 
-        var degrees = 270
-        val orientation = windowManager.defaultDisplay.rotation
-        when (orientation) {
-            Surface.ROTATION_0 -> degrees = 0
-            Surface.ROTATION_90 -> degrees = 270
-            Surface.ROTATION_180 -> degrees = 180
-            Surface.ROTATION_270 -> degrees = 90
-        }
-        Log.i("[Generic Activity] Device orientation is $degrees (raw value is $orientation)")
-        val rotation = (360 - degrees) % 360
-        coreContext.core.deviceRotation = rotation
-
         // Remove service notification if it has been started by device boot
         coreContext.notificationsManager.stopForegroundNotificationIfPossible()
     }