Hey guys, I have a iPhone 3G and usually every night I plug in my phone to charge until morning. Recently I've been experiencing an issue, where i fall asleep during a phone call and keep the phone plugged in, I will wake up with no battery. The phone would show a red battery, but the battery on the top right shows that it is fully charged. Genius bar can't do anything for me because I'm out of warranty. Any help is appreciated.