How does Unicom check the contract period?

The query method of contract period is as follows: 1. Log in to the online business hall/homepage, and click the phone bill inquiry > phone bill inquiry > account balance; 2. After logging in to the mobile phone business hall client, click Service > Query > Telephone Charge Query > Account Balance; 3. Log in to the touch-screen version of WAP in the mobile phone business hall.10010.com, and click Query > Call Charge Query > Account Balance. Check the frozen amount, which is the remaining total amount authorized by the user contract. Just divide the frozen amount by the monthly appropriation, which is the contract period of the number. In addition to the above methods, you can also consult the local manual customer service or business hall.