Method 1: Computer side inquiry.
1. Enter China Unicom on the search engine and click Search.
2. Select and click to enter the "official website of China Unicom Online Business Office", and log in the account. If there is no account, you need to register.
3. Go to the home page of the business hall automatically, and click the "Self service" button at the top of the selection interface.
4. The mobile phone number query and change interface appears. Select and click the "Call Charge Details" button at the bottom right.
5. On the home page, you can also select and click the "Detail Query" button in the "Bill Query" option of the "Call Fee Query" menu.
6. When the six month call list appears, you can also "customize time settings" to see the list of phone charges for the previous month.
Method 2: Mobile terminal inquiry.
1. Download the "Unicom Mobile Business Office" software APP in the "Application Market" or third-party software of the mobile phone, and click to log in.
2. After entering the main interface, select and click the "Service" button below.
3. Select and click the "Call Fee Details" button in the "Call Fee Service Query" option in the "Query" menu.
4. You can make a detailed inquiry about the dialogue fee on a monthly or daily basis.