1 Find "Battery Saver"
Slide two fingers downwards starting from the top of the screen.
Press the settings icon.
Press Battery.
Press Battery Saver.
2 Extend the battery life
Press the indicator next to the required setting to turn the function on or off.
Press the indicator next to "Use Battery Saver" to turn on the function.
3 Return to the home screen
Press the Home key to return to the home screen.