How does Unicom query the traffic balance?

Unicom users can query traffic usage in the following ways: 1. China Unicom APP client: log in with your mobile phone number and service password, and click Service > Query > Internet Traffic to query the usage and remaining situation of mobile Internet traffic in the current month. 2. Unicom's online business hall: log in with your mobile phone number and service password, and click "phone bill inquiry" > "usage inquiry" > "internet traffic" on the home page to inquire about the usage and remaining situation of mobile phone internet traffic in the current month, and you can also set up SMS reminder function.