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A text message is a message that can be sent to other mobile phones. Your phone can send and receive text messages as soon as you've inserted your SIM. If this isn't the case, you can set up your phone for text messaging manually.
1. Find "Settings"
Press the main menu icon.
Slide your finger right starting from the left side of the screen.
2. Select default messaging application
Press Default SMS app.
3. Set the message centre number
Press SMS/MMS settings.
Press SMS service center.
Key in +447785016005 and press OK.
4. Return to the home screen
Press the Home key to return to the home screen.