First, click "WeChat" on your mobile phone.
Second, after entering, select the official account of "Chongqing Mobile" WeChat.
Secondly, select the "self-service" option, as shown in the figure below.
3. After entering the self-service, select "Query Telephone Charge", as shown in the figure below.
Four, after entering the phone bill query, you can query the phone bill balance and cost information, as shown in the figure below.