How do Guangdong 2G3G users exchange SMS for prepaid cards?

Guangdong 2/3G users (except prepaid users) use this machine to send short messages "JFCZ (or jfcz)+ face value of prepaid phone bill (20,30,50, 100)" to10. After the redemption is successful, the corresponding points will be deducted from the number, and a corresponding amount of grant will be added to the user's account.

Tips: "JFCZ" is the initial letter of "point recharge", and the face value of the phone bill to be exchanged is optional, including 20, 30, 50, 100. Sending other numbers is invalid. For example, sending "JFCZ 100" to 100 10 means deducting 10000 points from your mobile phone number and automatically recharging 100 yuan to your account. Sending "JFCZ40" is invalid.