How do I delete a Apple account from my iPhone
How do I get the Apple ID that someone entered on my new phone
iPhone 11, iOS 16
Question marked as
If the person that entered the account won't sign out of the account, if you are the original owner, contact Apple. Apple can remove the ID if provided the required paperwork to include the original purchase receipt with the serial number on it.
Request additional support for unlocking your device. -
You used to be able to take the device, the original purchase receipt with the serial number, and a photo ID to the nearest Apple Store (if it has reopened) and have them remove the ID. This may have changed, so call the store before going to make sure they can help.