LG E400 オーナーマニュアル

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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 
the phone was last connected to a power 
source or if connected to a power source, 
how long since your  phone was last run 
on battery power. The body of the screen 
lists applications or services using battery 
power, from greatest amount to least.
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.