How does China Telecom check the arrears by SMS?

You can send a short message "102" or "ZHYE" to 1000 1 using your telecom mobile phone, and the system will reply the current phone bill, including the arrears. If the mobile phone is in arrears, you can open the online business hall through the computer and log in to the personal center to inquire about the current phone bill balance and other detailed business information. For more service benefits, click on "official website" customer service 220 below to answer your questions.