*This is just a personal theory and I posted it in another thread as well* My theory on the vast variation in battery life experiences: The battery gauge is atrocious on this OS. I turned the phone off and charged it for a while, the indicator that shows charge while off said a little over 25%, turned the phone back on and the gauge said 77%. For those having terrible battery life please try this. Charge your phone with it off completely and then turn it back on, I suspect the OS has a terrible problem with reporting inaccurate status. I know it can be hard to find time to do this, but I think you will find a DRASTIC improvement if you do. My phone is registering ~30-50% more than the battery is actually at I'm pretty sure.