Sms (short message service) is a system for send and receive text messages via mobile phone. The best thing of this system is the fast delivery, usually within a few seconds. Using an extended version of SMS, named as MMS (multimedia messaging service), you can send and receive not only plain text, also short ringtones, images, etc. SMS written in Latin limited up to 160 characters, other type of letters - up to 70 characters.
First SMS message was sent in December 1992 in England, and transmit the text from PC to mobile phone, GSM network of Vodafone.