1. Set the screen brightness to low.
    Note: From the home screen, tap Menu > Settings > Display > Backlighting > Drag the Screen Brightness slider to Level 1.
    device 2883/1463087.jpg
  2. Set the screen timeout to a shorter duration.
    Note: From the home screen, tap Menu > Settings > Display > Backlighting > Screen Backlight.
    device 2883/1463088.jpg
  3. Turn off Bluetooth when not in use.
    Note: From the home screen, tap Menu > Settings > Connectivity > Bluetooth > Settings > Activation.
    device 2883/1463090.jpg
  4. If you are traveling and do not have access to mobile or Wi-Fi networks, switch to Flight mode.
    Note: From the home screen, tap Menu > Settings > Profiles > Flight Mode.
    device 2883/1463091.jpg