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 indicators next to the required settings to turn them on or off.
Press the indicator next to "Battery saver" to turn the function on or off.
3 Return to the home screen
Press the Home key to return to the home screen.