What is an sms message.how much are they to use?

Question

what is sms messages and the cost to australia

Answer 1

A sms is a text message sent via messenger to someone's cellphone. It don't cost the person sending from the computer anything. The cost to the cell phone owner depends on what plan they have, and who their carrier is.

Answer 2

sms stands for Short Message Service.

we use it to text people using our mobile phone.

do you mean how much it cost per sms to australia (where are  you based?)