Please can you change Apple ID number?

On the web

1. Sign out of every Apple service and device that's using your Apple ID.
2. Go to appleid.apple.com/uk and sign in.
3. In the Sign-In and Security section, click Apple ID.
4. Enter the mobile phone number you want to use as your Apple ID, then select Change Apple ID. 
5. A verification code will be sent to you on that number. Enter the verification code from the text into the fields provided.
6. Sign back in to all Apple services with your new Apple ID.

On your iPhone, iPad or iPod touch

1. Sign out of every Apple service and device that's using your Apple ID, except the one you're using to change your Apple ID.
2. Go to Settings > [your name] > Name, Phone Numbers, Email. 
3. Next to Reachable At, tap Edit. 
4. Tap Delete  next to your phone number and follow the instructions.
5. After you've entered the mobile phone number that you want to use as your Apple ID, a verification code will be sent to you on that number. Enter the verification code from the text into the fields provided.
6. Sign back in to all Apple services with your new Apple ID.