Ok so, I spent a portion of today seeing how fast I could drain my iPhone 4S, running the latest beta iOS 5.0.1 which was seeded yesterday. For the test I had the screen at 100% brightness, wifi on (3G was never used for data), 4 email accounts setup to fetch every 15 minutes, iCloud enabled, and all system service locations turned on. Siri was enabled, but never used during this test. I also made no phone calls, only sent a handful of texts (5 at most) and sent zero emails, only received them (received roughly 4 or so). Volume most of the time was at max, but if you have played Nyan Cat: Lost in Space you'll understand why I turned it down for that lol. The phone lasted 4:03, which is broken down by usage roughly, these are not exact numbers, just best guess estimates as to how I spent the time: 2:30 spent gaming (some Nyan Cat: Lost in Space, but mostly Asphalt 6, probably 1:45 was spent on Asphalt 6) 1:00 spent watching videos (40 minute show of Diggnation through the Greenbox app, 20 minutes of random youtube videos) 0:15 spend browsing through safari (MacRumors, Engadget, The Verge, CNN, ESPN) 0:15 spent randomly (texts, email, browsing app store) I never left the phone idle, or locked the screen. I was using it the entire duration from 100% to 0%. Overall, while a demanding test, not too impressive. But, I do feel that Asphalt 6 skewed the results a bit, as it seemed to be a major battery drain after its recent update for the iPhone 4S.