ShortMessageService (English: ShortMessageService, abbreviation: SMS; sometimes also known as messages, short messages, text messages, this service also has many English common names such as SMSes, textmessages, messages or even texts and txts) is a cell phone It is a type of mobile phone service.
SMS was first introduced on GSM cell phones and is now common on almost any cell phone system, such as 4G phones.
SMS technology was first used on European GSM systems in 1991, and the GSM protocol 03.40 defines the peer-to-peer method, which is the most common method used by users.