Why is Guangdong Mobile's home number useless?

You can set up nine home numbers. Check whether the home number you set is successful. Edit the short message CXQQHM to 10086 with this machine, and the system will reply to the details of your previous family settings. You should be clear: dial the family number directly, and the cost is as follows: 1. Dial the family number directly locally, that is, where the number belongs, 0. 19 yuan/min; 2. Roaming in Guangdong Province, directly dialing the family number, 0.39 yuan/minute; 3. Roaming outside Guangdong Province, directly dialing the family number, 0.49 yuan/minute.