How do I remove my old number ?

Where do you have the old number? Messages/FaceTime? If so, you need to change the number on your Apple ID. After the change, allow up to 24 hours for the change to sync. Before trying to make the change, sign out of Messages/FaceTime on all devices/computers.

Apple ID - Manage     

addie210 Said:

"How do I remove my old number ?: So I have a new phone but some how got my old number on this phone and it won’t let me remove it. How do I remove my old number?"

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Contact your Carrier:

Have the carrier change it to what it should be.