SMS is a short for short message service Features common to mobile phones, and other mobile devices. You can send a message with the number of characters is limited to a phone or other mobile device. The term is used differently in some countries. In North Amarica, Spain, and the Philippines called the SMSes, or txtsand.
source : http://whatdoessmsmean.com/
Hi Dwight. SMS stands for Short Message Service also know as a text message.