Under normal circumstances, if the ID number enters the China Unicom blacklist, you will not be able to handle China Unicom's network access and other services, and it will not affect the user's credit card processing. However, some activities will clearly stipulate in the agreement that breach of contract may be recorded. For example, in Guangdong's "Telephone Fee Treasure" guaranteed rental business, if a user defaults during the agreement period, China Unicom, in addition to deducting economic losses from the financial guarantee, also reserves the right to send a lawyer's letter and record it in the bank's credit record. If you are included in the blacklist due to breach of contract due to such activities, it may affect the credit review of your credit card. At the same time, credit card processing involves the business of a third-party company. Since the credit reporting system is relatively complex, whether the user's credit status with each operator will be comprehensively considered shall be subject to the business policies of the third-party company. China Unicom's current blacklisted users include but are not limited to the following situations: 1. Users who have overdue payments and have their accounts canceled; 2. Users who are maliciously in arrears (such as maliciously defrauding international and Hong Kong, Macao and Taiwan information station phone bills, maliciously defrauding long-distance roaming phone bills, stealing (Hit, etc.); 3. Users suspected of SMS fraud, fraud and other criminal acts determined by the public security organs; 4. Unowned blacklist users: users without customer information who meet the above conditions. After entering the China Unicom blacklist database, the China Unicom blacklist database information is shared nationwide and updated in real time. It also shares other operator blacklists and bank credit system blacklists. If you are on the blacklist, it is recommended to go to the local business office as soon as possible to remove the blacklist.