Help me please. After upgrading my iphone 3g to 3.1.2 i notice that my battery depletes super fast. for example last nite my iphone had full charge and 7 hours later when i wake up the battery was nearly flat. I didn't use it at all. It was just on standby as i was sleeping! Can anyone tell me what i should do. I also did a complete restore but i restored from my backup. Anyone having the same problem?