20
Monitoring and controlling what uses
the battery
In the Home screen, touch the
Applications tab, then select Settings >
About phone > Battery use.
Battery usage time is displayed at the
top of the screen. It tells you how long it
has been since you last connected to a
power source or, if connected to a power
source, how long you were last running
on battery power. The body of the screen
lists applications or services using battery
power, from greatest amount to least.
1
2
3. Installing an open source
operating system
If you install and use an open source
operating system (OS) on your phone
rather than using the OS provided by the
manufacturer, your phone may malfunction.
WARNING
If you install and use an OS other than
the one provided by the manufacturer,
your phone is no longer covered by the
warranty.
Important notice
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