What short message should I send to retrieve the service password of my mobile phone number?

The correct way is to log in to the local mobile online business hall, click Forgotten Password on the edge of the password input box, then enter the service password modification interface, fill in some information according to the steps, click Send Random Message, and a password will be sent to you. It will be difficult to modify the service password answer after it is filled in. You can call the operator at 10086. I guess if you want to handle it, you must go to the business hall, and it is quite difficult without an ID card, unless.