Turn GPS on or off
Turn screen lock on or off
Change screen brightness
Using FM radio on my mobile phone
You can see how much data you've used when you've used the browser or when you've sent and received email etc.
Find "Data usage"
Slide your finger downwards starting from the top of the screen.
Tap the settings icon.
Tap Data usage.
Check data usage
The data usage is displayed.
Return to the home screen
Tap the Home key to return to the home screen.
Tap anywhere to dismiss
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