Turn GPS on or off
Change screen brightness
Turn screen lock on or off
Call a contact in your address book
You need to install Twitter in order to use it on your mobile phone. Before you can install Twitter, you need to set up your mobile phone for internet and activate your user account on your mobile phone.
Find "Play Store"
Tap Play Store.
Tap Google Play.
Key in Twitter and tap the search icon.
Tap ACCEPT and wait while Twitter is installed.
Return to the home screen
Tap the Home key to return to the home screen.
Tap anywhere to dismiss
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