It's okay to go to the business office with your ID card and get canceled. If you don't, you may be blacklisted.
Mobile card cancellation:
1, the real name of the user, you need to pay off the phone bill, not in arrears in order to cancel the account.
2, and then in the working hours with ID cards and cell phones, to mobile communication 100, queuing number for processing.
3, such as the card inside the phone bill, you can return, but you need to go to the city where the card is opened to communicate 100 can be refunded, other cities can only be canceled, does not support the refund, at present.
4, at present does not support cross-provincial for cancellation, such as Guangxi card in Guangdong cancellation can not, you can mail the card and ID card back to a friend agent for, write a power of attorney. Or you can go in person.