How does Unicom check the phone bill?

Unicom number can query the phone bill in the following ways:

1. After logging in to Unicom's online business hall with your mobile phone number and service password, click "Query" to see information such as "real-time phone bill" and "account balance";

2. After logging in to China Unicom APP with your mobile phone number and service password, click "Service-Query-Basic Query" to query the real-time phone bill, account balance and other information;

3. Edit the short message "CXYE" or "YE" and send it to 100 10 to check the available balance.