How to cancel Unicom's mobile phone business?

Hello, at present, you can unsubscribe from email service through mobile Internet, mobile client and business hall. (1) Unsubscribe from the mobile Internet and log in to the mobile Internet email page; If you choose to unsubscribe, you will be notified by SMS after confirmation, which will take effect next month. (2) The mobile phone client unsubscribes and opens the account setting page of the mobile phone client; Enter other settings and select package information on the subsequent page; If you choose to unsubscribe, you will be notified by SMS after confirmation, which will take effect next month. (3) The business hall unsubscribes from the business hall of China Unicom. At present, 4G products can only be changed or unsubscribed through the business hall. Or you can call the customer service hotline 100 10 for specific consultation. Unicom mobile phone users can call 100 10 customer service nationwide free of charge, and cannot add the area code to call 100 10 customer service hotline when roaming arrears stop.