Never put my phone in my back pocket, never had opportunity to step on phone (I always put it under the couch, or on the side of my bed I don't walk on to avoid this.) Yet somehow it got pretty severely bent, I didn't even notice because it was in the case, but the screen started coming off and I was having problems with reception so I took it in and they showed me it was bent. Phone is in my pocket a lot while biking, but this isn't an excuse for a 600 dollar phone to bend. I didn't think much of the issue until I looked online and heard people were having similar problems and the main weak spot seems to be right next to the button volume button, which is exactly where my developed a previous unexplained crack. I read that it could be the battery expanding, which I'm hoping is the case as it seems this is the only way Apple will replace it, although they didn't bother to check at the store. I was having problems with the battery draining itself within an hour even if the phone was locked and in my pocket, but it resolved itself although the battery still acts strange sometimes. http://imageshack.us/photo/my-images/11/xn.jpg http://imageshack.us/photo/my-images/29/1ocf.jpg http://imageshack.us/photo/my-images/11/4i1i.jpg http://imageshack.us/photo/my-images/585/q5ln.jpg Edit: Got the phone replaced. The guy who replaced it said he saw a phone bent out of the box before and had no problems exchanging mine. It probably also helped that my sister went in instead of me. Good luck to anyone having this issue.