I got my iphone 4 on launch and was loving it, I had dropped calls but nothing I couldn't live with however, the back panel had some freeplay in it so I brought it into the apple store about a month ago and got it replaced, however the replacement has been absolute ****. Way more dropped calls and the proximity sensor is horrendous, usually i would mute the person at least twice every phone call. So I am going to Mall of AMerica this weekend, Im going to try to replace it one more time. I heard the later weeks of iphone were a little better, so im going to give that a try, however if I still have these issues, is there any way I can still return it. If so I would most likely go with the att galaxy s phone. Again, I preordered my phone and I am not sure how the returns work on it.