Changing FaceTime and iMessage number

Add or remove your phone number in Messages or FaceTime - Apple Support

See the above and try the steps below...do not leave any steps out...should it not help do what the last line says...

If your phone number is unchecked and you can't select it, or you have some other issue, follow these steps:

1. On your Mac:

• • In Messages, choose Messages > Preferences, then click Accounts and select your iMessage account. Click Sign Out.
  • In FaceTime, choose FaceTime > Preferences, then click Sign Out.

1. On your iPhone, iPad, and iPod:

• • Go to Settings > Messages > Send & Receive. Tap your Apple ID, then tap Sign Out.
  • Go to Settings > FaceTime. Tap your Apple ID, then tap Sign Out.

1. On your iPhone:

• • Go back to Settings > Messages and make sure that iMessage is turned on.
  • Tap Send & Receive, then choose “Use your Apple ID for iMessage” and sign in with your Apple ID.

1. Using the same Apple ID, sign back in to Messages and FaceTime on your other devices. 

If you still need help, change your Apple ID password and repeat the setup steps. If that doesn't work, contact Apple Support.

I question what you say because it is not the solution, it may work in a very limited amount of cases if everything is registered properly and just the number got stuck, but most cases it won't work...

Even the solution I posted which is recommended by Apple does not always work that is why Apple says in that solution..."If you still need help, change your Apple ID password and repeat the setup steps. If that doesn't work, contact Apple Support."

Another solution which only works sometimes is just changing your Apple ID password, cause when you change your password it reregisters your phone number, and when it does work you will get a popup from Apple saying your # was registered.

See this post...https://discussions.apple.com/thread/251414717...the user changed the # the way you said and it did not work...

The user above says this in his post..."Given in mind I have changed my reachable phone number in the Apple ID to the new one."

Open settings click on your name on top tap on name, phone number and then u can change it.

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This is how u can change your number for facetime and i message.

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