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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 "‹SIM› SMS centre"
Press the message icon.
Press the menu icon.
Press ‹SIM› SMS centre.
2. Set the message centre number
Press arrow right.
Key in +447785016005 and press OK.
3. Return to the home screen
Slide your finger upwards starting from the bottom of the screen to return to the home screen.