Although most SMS messages are mobile-to-mobile text messages, support for the service has expanded to include other mobile technologies, such as ANSI CDMA networks and Digital AMPS.According to one market research report, as of 2014, the global SMS messaging business was estimated to be worth over 0 billion, accounting for almost 50 percent of all the revenue generated by mobile messaging.WP4 created a Drafting Group Message Handling (DGMH), which was responsible for the specification of SMS.
The result was approved by the main GSM group in a June '85 document which was distributed to industry.
The input documents on SMS had been prepared by Friedhelm Hillebrand (Deutsche Telekom) with contributions from Bernard Ghillebaert (France Télécom).
The technical development of SMS was a multinational collaboration supporting the framework of standards bodies.
Through these organizations the technology was made freely available to the whole world.
Most early GSM mobile phone handsets did not support the ability to send SMS text messages, and Nokia was the only handset manufacturer whose total GSM phone line in 1993 supported user-sending of SMS text messages.
According to Matti Makkonen, the inventor of SMS text messages, Nokia 2010, which was released in January 1994, was the first mobile phone to support composing SMSes easily.In this way, unused resources in the system could be used to transport messages at minimal cost.However, it was necessary to limit the length of the messages to 128 bytes (later improved to 160 seven-bit characters) so that the messages could fit into the existing signalling formats.should be available in the mobile system." The GSM is optimized for telephony, since this was identified as its main application.The key idea for SMS was to use this telephone-optimized system, and to transport messages on the signalling paths needed to control the telephone traffic during periods when no signalling traffic existed.The material elaborated in GSM and its WP1 subgroup was handed over in Spring 1987 to a new GSM body called IDEG (the Implementation of Data and Telematic Services Experts Group), which had its kickoff in May 1987 under the chairmanship of Friedhelm Hillebrand (German Telecom).