What is the difference between Abbreviated SMS and Long/Multi SMS? ← FAQs Abbreviated SMS, makes use of a URL in the message to condense it to a single SMS. This single SMS allows for a user to click on the link to see all of the information. Long or Multi SMS will make all of the information available via text message. This may mean that the showing instructions, for example, will span more than one text message.ShowingTime is not responsible for charges your carrier may apply.