My iphone 4 is having battery issues. I was first in line at at&t when it came out so it is almost a year old. Its on 4.3.1 and it currently not jailbroken. MY battery is draining really quick. In a hour and 15 mins it drained 15% on standby. I barley use my phone and a charge use to last me two days. Do you think i need a new battery. My phone is not running hot so i dont think memory is eating the battery up.