How to unlock Apple's mobile phone id account? Do I need mobile phone number verification?

ID means that accounts are generally bound to mobile phone accounts, and you can do it through SMS verification code of mobile phone accounts and the like. You only need to enter the SMS verification code or account password to enter success.

The ID is the user name, which you can use to perform all Apple-related operations.

When you create an account for the Apple service, an ID is created. With your ID, you can access other Apple services.