What business does SMS belong to?

Peer-to-peer refers to mobile users, and short messages in the network also refer to mobile users. Network short messages generally refer to mobile and Unicom users. There are many kinds of SMS packages, and the charging standards vary from place to place, so I can't give you an accurate figure. You'd better ask the people in the business hall. If your hand supports java, you can download the Fetion client, which is similar to the QQ interface and can also be used on the computer. Sending text messages is free, as long as you charge a certain traffic fee.