Does it feel like your battery life has taken a hit after you installed the iOS 7.1 update onto your iPhone or iPad? If it does you're not alone. However, before you resign yourself to having to have your iDevice permanently hooked up to a power source, here are some things you can try.
When updates are installed onto iOS device it seems that the battery calibration data is wiped, and this is partly to blame for the rash of battery complaints following update. Not only does this make it seem like the device is discharging fast, but it can also make recharging seem a lot faster too.
This battery recalibration data will be rebuilt over a few charge/discharge cycles, so the best thing that you can do is to simply use your device.
Personally, I tend to find battery life to be all over the place during the first week following an iOS update.
If waiting doesn't work, you can try resetting the iDevice. There are two options here – a minor reset where you only delete the settings, and a more major settings that removes the settings and user data (so make sure you have a backup!).
I suggest starting by nuking your settings, and if that doesn't work, go the whole hog and nuke the settings and data.
Here's how:
Finally, the nuclear option.
Some users are claiming that reinstalling iOS 7.1 through iTunes using the full iOS 7.1 update package as opposed to using the OTA (over-the-air) package helps.
Here's how to do this:
First, you need the download package:
Once you've got the package in you need to do the following:
If none of these suggestions help, then you're affected by a bug in iOS 7.1 (or possibly with an app you use) and will need to wait either for Apple to fix the bug or an updated app to be pushed to you.