I have this case on my 3GS and it did chip at the back of case but I ended up buying the wrapsol original for it. Did the same for my 4 and so far so good. I know people wouldn't want to spend extra to protect their phone from the case but some people are a little OCD like me. Lol. Plus it gives a csee thru backing where you can put a customized image insert and make your phone stand out.