Since I updated to iOS 4 my iphone 3G will never turn on after it goes to sleep. As long as I keep it on there seems to be no problem. As long as the iphone is plugged in, there is no problem. I have restored the iPhone and setup as new iphone and found no change. While the iphone is unresponsive the battery is draining very, very quickly. Pressing the home and top button does bring the iphone back to the home screen but obviously I don't want to do this every time I want to use my iphone for something. I called Apple customer service and all they wanted me to do was to restore the iphone which I told them that I had already done. Regardless, they had me try to restore it again over the phone when I reached a 1602 error in iTunes. I get this same error on 2 different computers using 2 different OS's (Windows 7 and Vista). When I restored the iphone originally I did so in recovery mode. Haven't seen anyone else with this problem, any suggestions? The closest apple store is 115 miles away.