Deregister iMessage on a phone I no longer have acccess to
How do I deregister iMessage on a phone I no linger have access to!?
How do I deregister iMessage on a phone I no linger have access to!?
See the Apple Support article(s) below. Link to contact Apple Support at the end of the article.
Messages or FaceTime - Add or remove your phone number. *
Try changing the Apple ID password.
What to do after you change your Apple ID or password - Apple Support - I suggest doing this before you change your Apple ID or password.
Deregister iMessage on a phone I no longer have acccess to