How to cancel the supplementary card in the China Unicom mobile business hall. How to cancel the supplementary card in the China Unicom app.

How to easily cancel the China Unicom supplementary card and enjoy free calls? PHP editor Yuzai brings you a detailed guide to teach you step by step how to do it easily through the China Unicom app.

Click on customer service

Open the China Unicom app and click on customer service in the upper right corner.

Click on online customer service

In the customer service interface, click on online customer service in the upper left corner.

Click to view

to enter the customer service interface, and you can go to the business hall to cancel the supplementary card.

The above is the detailed content of How to cancel the supplementary card in the China Unicom mobile business hall. How to cancel the supplementary card in the China Unicom app.. For more information, please follow other related articles on the PHP Chinese website!