Huawei M920 - Manual (Page 14)

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If your phone is powered on, the charging icon is displayed in the
notification bar while the battery is charging. When the icon changes to ,
the battery is fully charged.
2.2.4 Important Information About the Battery
• If the battery has not been used for a long time, you may not be able to power on
your phone immediately after you begin charging the battery. Allow the battery to
charge for a few minutes with the phone powered off before attempting to power
on the phone.
• Over time, the battery's ability to hold a charge decreases. When the battery life
becomes noticeably shorter after being fully charged, replace the battery with a
new one of the same type.
• Using data services increases demand for battery power and will reduce the
battery life.
• Time required to charge the battery depends on the ambient temperature and the
age of the battery.
• When the battery is low, your phone plays an alert tone and displays a message.
When the battery is running out of power, your phone powers off automatically.
2.2.5 Battery-saving Tips
The battery life depends on the network you connect to and the way you use your
phone.
Try the following to reduce battery consumption:
• When your phone is not in use, turn off the screen.
• Reset the screen timeout duration when you leave your phone idle.
• Lower the screen brightness.
• Use conventional wallpaper rather than live wallpaper.
• Use the AC adapter to connect your phone to a line power supply whenever
possible.
• Turn off Bluetooth when you are not using it. Set your phone visible to other
Bluetooth devices only when you want to set up a Bluetooth connection.
• Turn off Wi-Fi when you are not using it.
• Turn off your phone connection to GPS satellites when you are not using GPS.