I see a lot of threads about poor battery life. While it's true that lithium ion batteries don't need traditional training, they do lose sync with their internal meter which tells it how much charge to accept, how much is remaining, etc. This happens as you use your phone normally and should be repeated about once a month to keep your battery in tip-top shape. To fully realize the potential of your battery, do this: 1. Use phone until it turns off. 2. Plug into wall charger. 3. Phone will power on after a few minutes. 4. Turn it back OFF. 5. Wait three hours to ensure the last of the trickle charge gets in there. 6. Power your phone back on. If the meter does not read 100%, power back down and continue charging. That's it! Powering while off prevents parasitic load, which is basically the device and the battery vying for power. This can confuse the battery's internal "meter" so to speak. Also, this is not meant to be a magic bullet for battery life. if you use your phone a lot, get lots of notifications, or are in a poor signal area, your battery will drain faster. Hopefully you can eek out a few extra minutes by using this method Please post your findings if this helps!