Wakes up device/turns on screen. For example if a notification is received this will make sure that the devices screen lights up

wakeUpPhone

public static void wakeUpPhone(Context context, String tag) {
    PowerManager powerManager = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
    PowerManager.WakeLock wakeLock = powerManager.newWakeLock((
            PowerManager.SCREEN_BRIGHT_WAKE_LOCK |
                    PowerManager.FULL_WAKE_LOCK |
                    PowerManager.ACQUIRE_CAUSES_WAKEUP), tag);
                    
    wakeLock.acquire();
}