What does Monternet SMS communication fee mean?

Generally, it refers to the cost of ordering a service provided by Monternet SP service provider by sending a short message through a mobile phone ~ ~ ~ For example, downloading a genuine mobile game ~ ~ purchasing the on-demand information of paid props ~ ~ There are also some services that are ordered by pressing the bar or paid per time during the mobile phone surfing the Internet ~ ~ It will also generate Monternet cost ~ ~