sleeping.
Font size: Set the font size of the text on the screen.
Navigation key light duration: Set the backlight duration of the navigation
key.
Setting Date and Time
①From the home screen, tap
②Uncheck the Automatic date & time and Automatic time zone check boxes if
you want to set the time, date, and time zone by yourself.
③Set date, time, time zone, and date/time format.
Language Settings
You can change the language of your phone system in two simple steps.
①From the home screen, tap
②Tap a language to select it.
Data Usage
①From the home screen, tap
> Settings > Date & time.
> Settings > Language & input > Language.
> Settings > Data usage.
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