I received an SMS from someone saying this is their new number. How do I go from the Message app and add that number to an existing contact?
MacBook (1g), iMac G5 (17” iSight), PM G4 (MDD), PM G4 (AGP), Mac OS X (10.6), iPhone 3GS
At the very top of the message it will say "add to contacts" or something along those lines. Then you can either create a new contact with that number or in your case you would change it to a existing contact by tapping on that contact and changing the number.