To reduce battery consumption, set the Screen brightness to low. Note: From the home screen, press the Right soft key > Settings > Display > Light Settings > Brightness > Press the Left nav key to reduce the brightness > Press the Left soft key to save.
Set the Screen timeout to a shorter duration. Note: From the home screen, press the Right soft key > Settings > Display > Light Settings > Backlight Time > 'On' field > select the desired screen timeout.
If you are traveling and do not have access to mobile networks, switch to Airplane mode. Note: From the home screen, press the Right soft key > Settings > Phone > Airplane Mode > On