The update had to have helped. Never got battery life like this before. I'm at 14 hours 36 minutes and 60%! I do power off the phone at night when I go to bed and plug it in. voice calls 40% display 27% phone idle 10% cell standby 9% browser 6% android system 4% android os 2% backgrounds 2% I have no task killer. GPS and wifi off. Screen brightness on 4%. Twice today I turned off News Feeds and Skype. But they keep turning back on.....irritating!