How to cancel the Unicom card on the mobile phone?

Take Xiaomi 6 mobile phone as an example:

1. First, click on the mobile homepage to open the "Unicom Mobile Business Office" APP.

2. Next, on the homepage of the APP, click "Service" at the bottom to switch to the service interface.

3. Next, in the new interface, click to open "Processing".

4. Next, in the new interface, click to open the "account cancellation" option.

5. Next, in the new interface, select the interface you want to log off.

6. Next, in the new interface, click the SMS verification code, enter the received verification code, and proceed to the next step.

7. Next, in the new interface, upload the front and back of the ID card of the cancellation card as required, and then submit.