Hi Guys, I just received a brand new iPhone 3GS today. My battery seems to drain very very fast. It was fully charged, and I turn off all my services and the battery is dropping 1 percent every 2 minutes. its just sitting there with the screen locked and in 15-20 mins, the battery has gone down from 100% to 77%. What can I do? Is the battery faulty? I did not jailbreak the phone and I have already restore it to factory settings once. Please advice!