10086 how to cancel the color ring back tone for SMS?

Sometimes the CRBT service comes with a mobile phone card package for one or two months, which will be automatically renewed after the expiration. So if you don't want to continue using CRBT after the expiration, you can call 10086 to choose manual service, and you can ask customer service to cancel it for you.

The specific steps are as follows:

Take out your mobile phone and call 10086.

After answering, select "0" for manual service.

Wait for the customer service to answer, and then tell the customer service what you need.

After the customer service, your CRBT service will be cancelled.