Remove my phone number from an appleID that is not mine
Hi,
my phone number was used on another appleID. How can I make sure it is no longer connected to this apple ID? I do not have access to this apple ID.
iPhone 13 Pro, iOS 16
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Sorry, but only the owner of this Apple ID can make those changes:
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To use two-factor authentication, you need at least one trusted phone number on file where you can receive verification codes. If you have a phone number that isn't associated with your trusted device, consider verifying it as an additional trusted phone number. If your iPhone is your only trusted device and it's missing or damaged, you won't be able to receive verification codes required to access your account.
To see, add, or change your trusted phone numbers:
- On your iPhone, iPad, or iPod touch: Go to Settings > your name > Password & Security. Next to Trusted Phone Number, tap Edit.
- Choose Apple menu > System Settings (or System Preferences), then click your name (or Apple ID). Click Password & Security, then add or remove a trusted phone number.
- Go to the Account Security section of appleid.apple.com.
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copied from: Two-factor authentication for Apple ID - Apple Support