I had been taking photos and sent them to my email before I turned off the screen and left the phone for a couple hours. When I went to use it again, it was completely unresponsive. I've watched videos that say press power and volume down, plug it into the computer and do the same, etc. and I still have an unresponsive phone. It's not been dropped (was in an otterbox) and before I scream and try to find someone to repair it, I'm wondering if I might receive some help here. I really am not in the mood to put out big $$ for a new Samsung. Thanks for any advice.