So I have already changed my number on my Apple ID and on my Gmail, but when I log in with my Apple ID on Facetime and iMessage it still has my old phone number.I restarted my phone but still the same.I look forward to your answers and I would really

Remove your phone number

If you don't want calls or messages for your iPhone on your iPad, iPod touch, or Mac, you can remove your phone number. There are two ways to do this:

• On your iPhone, go to Settings > Messages > Send & Receive. Sign out of your Apple ID account. Then go to Settings > FaceTime and sign out of your Apple ID account.
• If the phone number that you want to remove belongs to an iPhone that you can't access, change your Apple ID password. This removes all phone numbers from your iPad, iPod touch, and Mac. Calls or messages for the removed numbers won't appear on those devices anymore.

If you have questions, contact Apple Support.

Set up your phone number

These steps work only with the phone number that belongs to your iPhone, not the phone number of a landline or other device. On your iPhone:

1. Go to Settings > Messages and make sure that iMessage is on. You might need to wait a moment for it to activate.
2. Tap Send & Receive. If you see “Use your Apple ID for iMessage,” tap it and sign in with the same Apple ID that you use on your Mac, iPad, and iPod touch.
   
3. In the “You can be reached” section, make sure that there are checkmarks beside your phone number and Apple ID.
4. Go to Settings > FaceTime and follow the same steps.

Add or remove your phone number in Messages or FaceTime