I got my S2 in early May 2011, never had a case on it, dropped it plenty of times from hand height onto a wooden floor, dropped it 3 or 4 times from car seat height onto concrete, and once into a sink full of water.. all I have is one scratch on the top-left casing of the phone and a completely scratch free screen.. it's a pretty hard-wearing phone. Mind you I've always been careful to not put it in the same pocket as keys/coins