Hey, i've had my phone for about over a year now. I have never had battery problems, but for a month i have realised my phone will charge quite fast and then drain out quite fast too. Even when i have taken it off charge from 100% and i havent done a thing with it or if i have just texted it will go to 99% and continue going down even if i'm not using it. I don't know whats wrong ?? I also don't want to take my phone to the phone shops in my area as they seem to delete every single thing off phones and mess them up even more. Please help