I haven't experienced any battery issues myself, and my friends who have it haven't either. I was starting to think that this was just another media spun "find a flaw with the iPhone" game. Restoring and reinstalling doesn't help? Seems odd that certain hardware would be the cause. And if it's not the hardware, it seems odd that someone hasn't discovered the setting causing the drainage. The only time I've spotted a drain was syncing with early iCloud, it seemed to constantly be downloading something. I quick reboot (after a few hours which consumed most of my battery) fixed the problem.