Apple returned to the factory to pick up the SMS template after sale.

If Apple gives you a new machine, the serial number and other information will change. But appleID Apple won't change your ID unless you log in with a password. In addition, ID is an important means of unlocking, and it will be more troublesome if someone steals it. You can bring the purchase invoice and warranty card to the purchased Apple direct store to explain the situation and apply for binding the iPhone. I hope I can help you.