Push Notifications don't vibrate when app is closed

Question

On Android 10, when I receive push notification, the vibration only works if app is opened. If it's in background or closed, vibration doesn't work (but notification get's through and sound works). Is this a bug? Couldn't find it in Google's bug-tracker though.

I send the push notification from our server with data payload, which ensures onMessageReceived() gets called even if app is in background. And it does, I can debug it.

Here's how notification channel is created:

NotificationChannel mChannelUp = new NotificationChannel(CHANNEL_ID_ALERTS_UP, getApplicationContext().getString(R.string.alerts_up), NotificationManager.IMPORTANCE_HIGH);
mChannelUp.enableLights(true);
mChannelUp.enableVibration(true);
//        mChannelUp.setVibrationPattern(new long[]{500, 250, 500, 250}); // doesn't help
mChannelUp.setLightColor(Color.BLUE);

AudioAttributes audioAttributesUp = new AudioAttributes.Builder()
        .setUsage(AudioAttributes.USAGE_NOTIFICATION_EVENT)
        .build();

mChannelUp.setSound(Uri.parse(ContentResolver.SCHEME_ANDROID_RESOURCE + "://" + getPackageName() + "/" + R.raw.notif_sound_up), audioAttributesUp);
notificationManager.createNotificationChannel(mChannelUp);

And the notification itself:

NotificationCompat.Builder mBuilder =
        new NotificationCompat.Builder(this, CHANNEL_ID_ALERTS_UP)
                .setAutoCancel(true)
                .setSmallIcon(R.drawable.ic_notif)
                .setColor(ContextCompat.getColor(this, R.color.colorPrimary))
                .setLargeIcon(logo)
                .setVibrate(new long[]{250, 500, 250, 500})
                .setLights(Color.parseColor("#039be5"), 500, 500)
                .setContentTitle("some title")
                .setContentText("some content")
                .setSound(Uri.parse(ContentResolver.SCHEME_ANDROID_RESOURCE + "://" + getPackageName() + "/" + R.raw.notif_sound_up));

mBuilder.setContentIntent(resultPendingIntent);

Notification notif = mBuilder.build();

NotificationManager mNotifyMgr = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
mNotifyMgr.notify(notificationId, notif);

Answer 1

You need to call the vibration service.

vibrator = (Vibrator)getSystemService(VIBRATOR_SERVICE);
vibrator.vibrate(2000);