I have to applaud my iphone 4 for the hell I have put it through. I have no bumper, no screen protectors or anything. I drop it at least 5 times a day, it flys off my lap while driving across the car, i toss it onto my desk and even throw it around my room. It's scratched to hell but i'm bringing it back to the apple store to get a replacement and start fresh. i dont plan on treating this next one like complete ***** but who knows. My phone has not had a problem and still works like a champ. Just wanted to boast!
P.s. - I knocked on wood
P.s. - I knocked on wood