diff --git a/apps/android/app/src/main/java/chat/simplex/app/model/NtfManager.kt b/apps/android/app/src/main/java/chat/simplex/app/model/NtfManager.kt
index 36963e3e4b..1dc71ef292 100644
--- a/apps/android/app/src/main/java/chat/simplex/app/model/NtfManager.kt
+++ b/apps/android/app/src/main/java/chat/simplex/app/model/NtfManager.kt
@@ -59,6 +59,9 @@ class NtfManager(val context: Context, private val appPreferences: AppPreference
     Log.d(TAG,"callNotificationChannel sound: $soundUri")
     callChannel.setSound(soundUri, attrs)
     callChannel.enableVibration(true)
+    // the numbers below are explained here: https://developer.android.com/reference/android/os/Vibrator
+    // (wait, vibration duration, wait till off, wait till on again = ringtone mp3 duration - vibration duration - ~50ms lost somewhere)
+    callChannel.vibrationPattern = longArrayOf(250, 250, 0, 2600)
     return callChannel
   }