How much do you charge for sending short messages on mobile home network?

After opening the family number, the call costs a dime a minute, but mobile also has the "I love my family" service. The function fee of five yuan per month can pull in three to five numbers, and then you can call the number you pulled for a penny a minute and send a message for a penny. But you have to go to the business hall to ask about the opening, sometimes it may change.