How to check the blacklist on Unicom?

You can check the blacklist number under your ID card through the "blacklist" menu of Unicom's mobile phone business hall. The query path is:

China Unicom Mobile Business Hall-Service-Query-Blacklist

Note: users need to log in to the mobile phone business hall. At present, they can only query the blacklist number under the current login ID of the mobile phone business hall, and cannot query other people's blacklists.