Some iPhone 3GS/4 and iPod touch 4G owners are complaining of severe battery drain under iOS 4.3. Multiple Apple Support Discussion threads (one, two, three, four) have been dedicated to the subject, with most users reporting that turning off push services, Bluetooth, Wi-Fi, and Location Services does not help the problem. One thread in particular tells of users whose iPhones have not auto-locked, and sat idle with the screen on for minutes or hours at a time. Notably, several iLounge editors have also noticed severe battery drain, although the problem is not present on all our phones. The problem appears to affect both iPhone 3GS and iPhone 4 units, as well as the iPod touch 4G, and several users have reported that they were able to eradicate the issue by performing a restore and re-populating the phone manually file by file instead of from a backup.
iPhone, iPod touch owners report battery drain with iOS 4.3
Charles Starrett was a senior editor at iLounge. He's been covering the iPod, iPhone, and iPad since their inception. He has written numerous articles and reviews, and his work has been featured in multiple publications.