7
2 The battery status (charging or discharging) and level are displayed on the top menu of the
screen.
To monitor and control what uses the battery
1 From the Home screen, tap Apps
> Settings > About phone > Battery > Battery use.
2 The bottom of the screen displays battery usage time and also lists applications or services using
battery pow
er from greatest amount to least.
3. Installing an Open Source Operating System
Installing an open source operating system on your phone and not using the operating system
provided by the manufacturer can cause your phone to 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.
• To protect your phone and personal data, download applications only from trusted sources, such as Play
Store. If some applications are not properly installed on your phone, your phone may not work properly- or
serious errors may occur. You will need to uninstall those applications and all of its data and settings from
the phone.
4. Using an unlock pattern
Set a screen lock to secure your phone from unauthorized use. To set the screen lock, follow the
process below.
From the Home screen, tap Apps
> Lock screen > Select screen lock and select from Swipe,
Face Unlock, Pattern, PIN or Password.
NOTE: In case that you have trouble with Face Unlock, you can unlock the screen with a pattern
and/or PIN as a backup.
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