Get the most out of your phone while getting the battery life you need. There are steps you can take to save power on your phone.
To save power:
Always charge the battery fully.
Select only the sounds that you need
Mute unnecessary sounds, such as key press sounds.
Use wired headphones
Use the loudspeaker selectively.
Use the power saving mode
Lower the backlight brightness
Tap Settings, and drag the Brightness slider.
Set the backlight to switch off after a short time
Tap Settings > Phone lock, and change the setting for Screen time-out.
Use the Glance screen selectively
To switch the Glance screen off, tap Settings, and switch Glance screen off .
Use the screen double-tap selectively
To switch the screen double-tap off, tap Settings, and switch Screen double tap off .
Use network connections selectively