I updated to Jelly Bean 4.1 a few weeks ago. The phone was a little laggy, there was a lot of stuff on there and the battery was draining quickly. After doing a search on the internet, lots of people suggested I do a hard reset. I did a soft reset first. Then when that was done, I rebooted the phone to do a hard reset, but didn't press the right key combination, so the phone booted as normal. I decided I didn't want to wait for it to load up, so I took the battery out to restart. When I put it back in, the phone wouldn't turn on. I tried my second battery, I tried charging it, I tried taking it out and waiting a few hours, nothing would work. After leaving the battery in the phone for a couple hours, I noticed the phone was getting pretty hot and it still wouldn't trun on. What is up with that, anyone has any ideas?