How to cancel the mobile phone card?

As there are some differences in the regulations on the unbinding of secondary cards in different provinces, it is recommended that you go to the mobile business hall or call 10086 to find out the specific local policies. You can refer to the following methods:

China Mobile's mobile phone business hall: After the mobile phone logs in, query the "business done", find the "universal secondary card", click the unsubscribe button on the right, and you can unsubscribe according to the prompts.

Business hall: both the main card and the auxiliary card can apply for unbinding the auxiliary card, and it is necessary to verify the applicant's valid certificate (ID card)+the applicant's random code and the random code of the main card or the auxiliary card. At the same time, the system will send another prompt message to the secondary card, telling the secondary card to unbind from the main card and the specific content of the new package changed by the secondary card after exiting the secondary card package.