Cause 2 of 3: The message centre number is incorrect
The message centre ensures that your SMS is sent to the recipient. Consequently, the correct message centre number needs to be saved in the phone.
Solution: Enter the message centre number.
+61415011501
+61415011501
+61415011501
1 Find "SMS centre number"
Press Messaging.
Press the menu icon.
Press Settings.
Press SMS centre number.
2 Set the message centre number
Key in +61415011501 and press OK.
+61415011501
3 Return to the home screen
Press the Home key to return to the home screen.