I got my phone in 2012 and its been two years with the phone and today i woke up and it was working fine. and an hour later I tried to unlock my phone and it would not unlock. So I did the system restore it ends up being slow to unlock BUT after a while of trying to tap on apps it would not open any of them. now my question is how can I get my phone back to working? I've tried almost everything i could think of. does any one know what could be causing the sensors in the phone to not work? like i said it was working fine this morning