iPhone 6
My phone's battery life is short
Solution 2 of 14: Automatic content synchronisation is turned on
You can set your phone to automatically download apps and app content that you've downloaded on your other devices. To use this function, you need to activate your Apple Account on your phone.
Press Settings.
Press iTunes & App Store.
Press the indicator next to the required content type to turn the function on or off.
Press the Home key to return to the home screen.