Well, I had my iPhone replaced yesterday due to a bad battery and have noticed a completely new problem as of today. When my phone has been in sleep mode for periods of 30 seconds or more the sleep/wake button requires 2 clicks to wake the phone. The first press of the button offers no reaction at all. To make matters worse, the home button doesn't wake the phone up AT ALL. Has anyone else experienced this type of problem? I know that this isn't normal considering I've never had this issue on the previous 4 iPhones I've been through (2 had multiple dead pixels and 2 with battery issues). I performed a hard reset on the phone as well as a full restore with no positive results. I am most likely going to take the phone back to the Apple store tomorrow, but would also like to know if anyone else has experienced anything like this. Thanks!