Choosing network mode for my mobile phone
Turning mobile data on my mobile phone on or off
Installing Twitter on my mobile phone
List of display icons
Turning the screen lock on my mobile phone on or off
To make a video call both phones need to support 3G and be connected to a 3G network.
Make a voice call and ask the recipient if the other phone supports 3G and if it's connected to a 3G network.
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