[i360]

The key is just making sure the phone sleeps when you have it off. Unless your purposely running programs like a Pandora or maps and whatnot. I found certain apps will keep your phone running when the screen is off (I know, I'm captain obvious..). This is why the oft despised ATK is actually useful to shut down programs since the Android people don't believe in "Exit" buttons for the most part. I can run this phone for perhaps 2 days with my usage pattern and not sacrifice much.