Does the family number have SMS function? Can I send a message?

No, because the number of relatives in the M-Zone can be set for free, and the number of messages sent is 10 cents. Only after the M group is opened, the number of messages sent is 50 cents. If there are not enough short messages, you can start the short message sending service. 6 yuan can send 100 messages for free every month. Opening mode: KTDXP can be sent to 10086, which will take effect on the first day of next month.