Solution shared on Apple’s forums successfully tested by several users
After Softpedia reported that Apple had a temporary fix for the battery drain issues caused by iOS 6.0.2, some users tested the method on their respective devices and confirmed that it worked.Not all of them, though. Admittedly, one of the first comments we received was negative. However, some users who followed the instructions with accuracy have been able to confirm that it worked.
“I tried this late yesterday, and it seemed to work for me. The ‘useage’ on my iPhone 5 reports 97% for 12hrs 18min of STANDBY and 38min USAGE. This is much better than I had been experiencing with 6.0.2,” says a commenter identified as “gleasonl.”
Another customer (using the screen name “kj329”) writes, “My friend sent me this link on the day we were going to try to trade it in for a 4s. It totally took care of the problem. I took my phone off of 100% charge yesterday and 21 hours later, it is at 34%.”
“So thankful and so excited to finally be able to just use my phone! I hope it stays this way," this user adds.
Apparently the workaround is pretty simple. Users must follow these easy steps:
1. Close all apps using the app switcher (double tap Home button, press and hold one icon, then click the red close button on all of them);
2. Navigate to Settings -> General -> Reset -> Reset All Settings. (which only resets network/iOS settings, not your content);
3. Wait for your device to reboot;
4. Charge up your iPhone to 100%.
At this point, iOS 6 should no longer deplete your battery so fast. In theory, anyway.
Note that this is not an official fix / workaround for the widely reported battery drain issues caused by iOS 6.0.2 on iPhone 5 and iPad mini. Proceed at your own risk.
The steps enumerated above were shared by a member of the Apple Support Communities forum who claimed to have resolved his troubles using this method.
If you don’t have a problem with resetting your settings (and then manually tweak them all back to how they were), you’re more than welcome to try it out.