I bought my iphone 4 just about a month ago and since friday it has become semi unresponsive. On friday, my home button was not responding. After rebooting the phone a few times, it was perfectly fine again. Today the touch screen was not responding very well. I could tap on an app and nothing would happen. Again, after a reboot, it was fine again. My phone is jailbroken with the latest GP on 4.2.1 but I haven't installed anything recently, so I highly doubt that is the issue. How easy is it to go to the at&t store and ask for it to be replaced? Would I have to be able to replicate the problem? I live in a rural area so there are no apple store close by. Even the at&t store is about a 35 minute drive.