I suddenly moved, and sent it to me saying that I used my certificate to apply for a new number, but I didn't. What's the problem and how to cancel it?

If you didn't get a new number, but Mobile sent you a text message with the new number, you can call the mobile customer service hotline 10086 for consultation and verification. If it is confirmed that the number has not been processed, it may be someone else's misoperation or something wrong with the mobile system.

If you really don't need this number, you can contact mobile customer service to request cancellation. You need to provide ID cards and other relevant supporting materials to cancel the number. The specific process can be determined according to the requirements of the mobile business hall in your area. If you can't go to the business hall in person, you can also cancel it through China Mobile APP or online business hall, and fill in the relevant information according to the system prompts.