I've had my Nokia Lumia 928 for a little over 2 weeks and after the update, the screen would turn off, become unresponsive and then turn back on and would work. These symptoms persisted through out the day. Towards the evening, I received a phone call and after ending the call my screen displayed mostly black, white, gray very grainy tiny dots all over the screen. It was unresponsive for a couple of hours and then started functioning again. I did a soft and hard reset and now the phone turns on with a blue screen, flashes a couple of colors and then turns off. It buzzes every 2 to 3 minutes now. Anyone have any other suggestions or should I take it into the store? I have only had the phone for a little over 2 weeks and I didn't purchase any warranty for the phone. I would imagine there is manufacture warranty for a month at least with no charge.
