I noticed a thread about the 900 with this but not the 920 and was trying to see if anyone had a solution for my problem. If I get a call or make a call the screen will go completely black. Usually, the screen will go black you put it to your ear so you don't hit buttons etc. After the call, when I try and hang up the screen remains black and I have to fiddle around with every button until the screen shows up enough for me to press the hang up button. Also, when I get text message, the screen doesn't flash, I know these may be petty things but just little quips like this that are happening are kind of making making the WP8 experience a little frustrating. I don't remember this being an issue with my Samsung Focus, any ideas? Hardware or Software issue? Should I go to AT&T and return it? Any help is more than welcome