I have reset all types of setting exepct factory reset. I also deleted 80 % of third party apps. Clear cache. But my camera is still not working. It works for sometime and suddenly back screen appears. Now it happens in safe mode to. "A massage appea...

Notification settings change automatically in my M30 phone. I am tired to change it again and again . Group notification doesn't off for whatsapp and telegram. Plz help