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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"
Slide your finger left starting from the right side of the screen.
Press the menu icon.
2. Set the message centre number
Press the field below "SMS centre number" and key in +35387699989.
3. Return to the home screen
Press the Home key to return to the home screen.