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.
Press the indicator below "Battery Saver".
3 Return to the home screen
Slide your finger upwards starting from the bottom of the screen to return to the home screen.