Updates in the operating system versions come for fixing the issues that were seen in the previous version, but the new version of iOS, i.e. the 6.0.2 version has got a problem with the battery draining, although it was sent as an update to fix the Wi-Fi connectivity issues that were happening in the several iOS devices with the iOS 6.0.1 version. Many users who upgraded their iOS device, especially the iPhone 5 and the Apple iPad Mini, complained that the battery was draining too fast although we didn’t notice anything in our iPad Mini, and some even complained that the battery didn’t last for even a couple hours on stand-by.
Apple got notified about the same, and they responded in the Apple Support Community where it was a simple Reset they asked the users to do for their device, and interestingly, several users reported back again that the issue was gone, and there was no battery draining on the 6.0.2 version of iOS too on their iPhone or iPad Mini.
Here are a few complaints that we saw on the Apple Support Community:
Help please my iphone 5 64gb been replaced twice buy local apple store each time the device gets updated its starts draining battery crazy only lasting me two hours on battery life.
Ill be on it for a hour and 20% is gone. I’ve heard other users have also had this problem. Never happened till after I updated.
I’ve been having this exact same issue after upgrading from 6.0.1 to 6.0.2 on my iPhone 5. I called Apple Support, and they fixed it for me.
A user on the Apple Support Community told the other users that he was guided by the Apple team to do the following steps to resolve the issue:
Close all the active applications on your device, which can be done by double hitting the home key and a list of active apps opens up at the bottom, you need to manually hit the (-) option to close each of the active application and make the area empty.
Once done with that, you need to go the Settings > General and in this, go to the bottom where there is an option to “Reset” the iOS device. You need to hit that, so as to open a list of options to reset the device.
In the reset page, hit “Reset All Settings” so that the device resets but there is no deletion of the apps or data that you have saved, and just the settings and network info is all reset.
Once the device is reset, it would restart and then you will notice the change in battery draining speed.
Note: This tutorial was tried on an Apple iPad Mini, but the issue and resolving isn’t limited to it. The iPhone 5 is another device which had shown similar battery draining problems, and users can follow the same above steps to fix the issue. And, this tip was shared by one of the users who found this fix working for his device, and this is not any official guide from Apple.