How to add 1 yuan relatives and friends network?

SMS invitation sends the number needed by KT to join.

send SMS invitation code to handle the business of friends and relatives network. The other party will receive a confirmation message, and after the consent, the network of friends and relatives will be successfully established, and both parties can receive a successful message.

one yuan family network can add 9 people. China Mobile's family network has the original old version, which can add up to 5 people. Now it has been upgraded to the new version, which can add up to 9 people.