How to change my two-factor number on my Apple ID?

Try this:

Sign in to your Apple ID account page and edit / update your Apple ID details -> https://appleid.apple.com

• (Sidebar) Click Personal Information -> Reachable at -> then edit / update your trusted phone number.

I had the same problem but messages and FaceTime didn’t have the option to switch to the number I wanted - only the ‘wrong ‘ number or my email address. I fixed it by putting my old Sim in which allowed me to go into settings and set messages to the number I wanted. Then, without turning the phone off, I took that Sim out and put the new Sim in it. This set the phone numbers for messages, phone and FaceTime, to the correct number.

I had this problem when I changed number.

i accidentally fixed it by going on settings - FaceTime - selecting my old number which was still an option. It suddenly changed the number, and changed it in the other places too.

I had the same problem but messages and FaceTime didn’t have the option to switch to the number I wanted - only the ‘wrong ‘ number or my email address. I fixed it by putting my old Sim in which allowed me to go into settings and set messages to the number I wanted. Then, without turning the phone off, I took that Sim out and put the new Sim in it. This set the phone numbers for messages, phone and FaceTime, to the correct number.

I did what Jess_047 did. Went into FaceTime settings, unticked my new number and ticked email option, went back onto phone settings to try to change my number which didn’t work, went back onto FaceTime settings and my old number just appeared so clicked it which automatically changed my number back. I’ve missed SO many important calls because of this. Thanks

Get support from Apple directly -> Get Support or call Apple in your region see -> Contact Apple for support and service or check -> here for more support and assistance.

Hi, i was facing the same issue and got apple support for help and it resolved my issue by resetting network settings. Hope the following helps:

Go to Settings > General > Transfer or Reset [Device] > Reset > Reset Network Settings.

This also resets Wi-Fi networks and passwords, cellular settings, and VPN and APN settings that you've used before.

Check if this helps -> Add or remove your phone number in Messages or FaceTime

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

When you call someone, does the recipient see your 'correct' telephone number?

Get support from Apple directly -> Get Support or call Apple in your region see -> Contact Apple for support and service or check -> here for more support and assistance.

Please check -> go to Settings -> tap your Name ->scroll to & tap your iPhone -> then you will see your trusted Phone number.

Try also to remove and reinsert the SIM card.

Dead simple just go to general,scroll down to reset and choose reset network settings solves all above issues but you will have to input you WiFi passwords again

Yep, this is the fix, Jess_047! I had changed providers, also replaced a regular SIM card to eSIM card, and "My Phone" was showing the old number that could not be re-written for some reason. But based on your advice above, I went to the FaceTime settings, tapped my 'wrong number' and voila, it started changing to the correct number everywhere (lots of prompts on MacBook and iPhone where I had to say "yes"), so it's all good now. Thanks! Thank goodness you found this solution by accident. Perfect.