I'm not sure if it's because of the last update or what but when i first got the phone and it was fully charged, it would be on 100% for 30 minutes. and now i feel like when i just simply turn it on it goes down by a percentage. I already sent the phone in once because the screen was defective and they simply gave me a new one, but that process took a month just to get the phone back and i dont really want to go through that again. Any suggestions why my battery sucks all the sudden? Thanks!