So I was sitting with my Lumia 920 that still had about a 50% charge and has had the GDR2 update for about 5 days and the phone showed the blue windows phone screen and the ATT screen and then went black. Since then it has been unresponsive. Literally, I have tried to soft reset, I plugged it in to the wall, and plugged it into the computer.... nothing. I don't know whats wrong or what I should do. Can anyone help?
