Can anyone advise on if the Apple store will do a return on an iPhone 3G for Battery issues, and if so, how do I prepare to try and return it? The reason for returning it is simple: Me and my wife both have a new iPhone 3G. Right now, I am looking at both of our usage screens: Mine: 1:35 usage, 11:44 Standby, Battery Meter shows less than half battery. Hers: 1:26 usage, 18:57 Standby, Battery Meter still appears full. Note: Neither phone has the "iPhone has been plugged in since last full charge" message on them, so that is not the issue. Note 2: One BIG difference between the two of us is, I turn mine off every night and she never powers hers off. Should I be leaving mine on all the time too? Does that actually help? Should I just take both to the store and see if they will exchange mine? Is this enough evidence or will they want more?