I have a couple of Android phones from MetroPCS which I occasionally switch between but out of all the ones I have I find myself using my Samsung Admire, although it's not 4G like my other ones I still love it because the battery last me a awhile and I never really needed 4G anyway as I have Wifi at home and work. So anyway with all of my Android phones I have them set to where I can get the most out of my battery on a single charge, for example I got the following turned off/set to low: auto sync, gps, brightness, vibrations, keypad sounds, etc you get the point. With heavy usage (Calls, txts, music, FB, YouTube, Web) my Admire lasts me me about 10 hours enough to get me through the day. With moderate usage about 12-16 hours or even more. Apps that run in the background and use data I got them set to the lowest too so that they don't refresh very often and drain my battery. So how long does your Android last on a full charge and what have you done to improve your battery life?