Short Message Service (SMS) is a content informing administration part of most phone, World Wide Web, and portable communication frameworks. It utilizes institutionalized correspondence conventions to empower cell phone gadgets to trade short instant messages. A delegate administration can encourage a content to-voice change to be sent to landlines. SMS was the most broadly utilized information application, with an expected 3.5 billion dynamic clients, or around 80% of all cell phone supporters, toward the finish of 2010.

SMS, as utilized on present day handsets, started from radio telecommunication in radio update pagers that utilized institutionalized telephone conventions. These were characterized in 1985 as a component of the Global System for Mobile Communications (GSM) arrangement of standards.[full reference needed] The conventions enabled clients to send and get messages of up to 160 alpha-numeric characters to and from GSM portable handsets. Despite the fact that most SMS messages are portable to-versatile instant messages, bolster for the administration has extended to incorporate other portable advancements, for example, ANSI CDMA systems and Digital AMPS.

SMS is likewise utilized in portable advertising, a sort of direct promoting. As indicated by one statistical surveying report, starting at 2014, the worldwide SMS informing business was evaluated to be worth over $100 billion, representing just about 50 percent of all the income produced by versatile informing.