Apple has always had problems with battery drains and promised to get rid of this issue with every new released iOS version. So, the users who hoped that iOS 9 will be different had a big disappointment, because their iPhones or iPads, which have been updated to OS 9.0.x, 9.1, 9.2 or 9.2.1 are facing the same battery life issues, but luckily, there are some tips that will help fixing some of the problems.
Low Power Mode
This mode is available in iOS 9 and it’s one of the solutions which will help the battery to not die when it reaches a critical level (20 percent battery life left). If you’re experiencing problems and want to enter Low Power Mode before the battery is close to dying, you will need to launch the Settings app and go to “Battery”, where you’ll turn on the “Low Power Mode” toggle to “On”. When this option is activated, some of the features are restricted and other applications that run in the background without being used, will be closed.
When your device freezes and the software stops responding, the first thing that you should do is to perform a hard reboot by pressing and holding down the Home and Power buttons simultaneously, for seven seconds. After the iPhone or iPad will be turned off, it will automatically restart and the Apple logo will appear on the screen. It’s time to let go off the buttons and let the device boot up.
There are applications that require location services (GPS) to determine the position of the device, but if the user forgets to turn off this feature, the battery will be drained pretty fast. So, to turn Location Services off, you will need to launch the Settings app, go to Privacy and tap on the Location Services option. Then, you will toggle it on or off for all applications, or individually.
Reset All Settings
In case nothing works, the most extreme measure is to reset all settings and sent the device back to its initial stage, when it came out of the factory. This can be done by going to Settings > General > Reset > Reset All Settings, but you will then customize your device according to your preferences, because everything will be lost.
Downgrade To A Previous iOS Version
If you’re still not satisfied with how your device is behaving while running on the latest iOS version, it’s time to downgrade back to its previous available version. In order to return to iOS 9.2, after upgrading to the latest version, follow the steps that have been mentioned in this article: redmondpie.com/downgrade-ios-9.2.1-to-ios-9.2-on-iphone-or-ipad-heres-how-guide.