How does Guangdong Mobile check the phone bill by SMS?

HFCX or HFCX-YYYYMM (where "HFCX" is the initial letter of "phone bill inquiry"); "-"is a space; "YYYYMM" is the year and month of inquiry, and if it is not entered or there is an error, the current month will be the default).

Gold card express, express delivery content:

HFCX sending code

1, Chinese mobile phone: 05 12 186 1

2. English mobile phone: 05 12 1860 charging standard is free of information service fee, and only 0. 1 yuan/piece is charged (subject to successful reception).