I want to share a strange phenomenon that I discovered on my iPhone 5 (and that might explain a few if not all of the touchscreen issues reported here): I own a combined 2 USB, 4 mains outlet (US) that is plugged into 2 mains outlets. It usually charges iPad and iPhone 4 but also everything else that uses USB charging. On the outlets I have a lamp and my MBA charger as well as laptop charger and aerial power adapter (not that it would matter). I noticed that while the iPhone was charging the screen was unresponsive for most parts and tried Temple Run which was unplayable. I thought it was a screen defect until I figured that this only happens when charging. I had no problems charging on my MBA though. Anyone else noticed this strange behavior?