Open Messaging .

To add or edit text message centers, select Options > Settings > Text message > Message centers.

If you change your SIM card, the list of available text message centers is updated to the ones on the new SIM card.

To add message centers, select Options > New message center.

To edit a message center, scroll to it and select Change.To edit a message center, scroll to it and press the scroll key.

To edit a message centre, select the center from the list.

To delete a message center, scroll to it and press C.

Message centers may be preset in your device by your service provider, and you may not be able to create, edit, or delete them.