How do I know that Unicom's online account cancellation is successful?

If you complete the account cancellation business through Unicom's mobile phone business hall, you can try to confirm it in the following ways:

1. Dial the mobile phone number that has been successfully cancelled, and listen to the prompt whether the number no longer exists;

2. Use other numbers to call the local Unicom manual customer service to assist in the inquiry or customer service to assist in feedback verification.