How to inquire about the amount of arrears of telecom cards

Users can call the telecom self-service hotline 1000 1 if they need to inquire about the telecom charges, and then press the corresponding number keys according to the voice guidance, or directly edit the short message code 10 1 and send it to 100 1 to inquire about the phone charges. Users are advised to download and install the Huan go client of China Telecom on their mobile phones, and then log in the mobile phone number to check the phone bill at any time.