How to add supplementary cards to the M-Zone Family Plan?

Annual package 100 yuan, valid for 370 days;

Half-year package 55 yuan, valid for 185 days.

Specific SMS opening method:

Send short message KTJTN blank secondary card mobile phone number (only one secondary card number) to 10086 to open the annual package;

Send a short message KTJTBN to 10086 with the mobile phone number of the secondary card (only one secondary card number is allowed) to open the half-year package.

It takes effect on the same day.