Flimsy - Definitely not. Battery life - Over 24 hours using 30Mb of web a day plus calls, texts and polling for new emails every 30 minutes, over 48 hours if you turn off the unnecessary news/weather/finance background updates, which also cuts your data usage in half. I only use full websites on it, none of this mobile web and tapatalk stuff. The screen is superb and completely scratchproof. 1.25 Ghz processor, which is faster then the iPhone 4S just announced. My wife works for O2, and she can have any phone she likes. She gets to play with them all, and bring them home for us to trial. She has had the Galaxy S for twelve months now, and is getting her own S II soon. We've had every other brand in the house, including HTCs, Nokias, Sony and the full iPhone range, and I wouldn't swap the Galaxy S II for any of them.