iOS 9 and Low Power Mode bring up to 3 hours of autonomy for the battery according to the Apple company, the new system being created especially for those who run out of battery during the day, but not only that. Let's start first with Apple's promise that iPhone, iPad and iPod Touches will have up to 1 hour of additional autonomy after installation iOS 9, those from Cupertino achieving this by radically improving the operating system.
Separately, we have iOS 9 Low Power Mode, a system similar to those available in Android terminals, it disables a multitude of functions of the operating system to allow us to improve battery autonomy. This system will be able to be activated quickly through a button that will be present in the iOS 9 interface, probably in the Control Center or the Configurations, Settings app.
Apple doesn't say what functions iOS 9 Low Power Mode disables, but we're probably talking about everything except the phone functions, reducing the brightness of the screen and disabling background sounds.
