"SMS" redirects here. For other uses, see SMS (disambiguation).
 
SMS arrival notification on a Siemens phoneShort Message Service (SMS) is
 a service available on most digital mobile phones (and other mobile devices,
 e.g. a Pocket PC, or occasionally even desktop computers) that permits the
 sending of short messages (also known as text messages, or more colloquially 
SMSes, texts or even txts) between mobile phones, other handheld devices and 
even landline telephones. The term text messaging and its variants are more 
commonly used in North America, the UK, and the Philippines, while most other 
countries prefer the term SMS. Text messages are often used to interact with a
utomated systems, such as ordering products and services for mobile phones, or 
participating in contests. There are also many services available on the Internet
 that allow users to send text messages free of charge.







A mobile or cellular telephone is a long-range, portable electronic device 
for personal telecommunications over long distances.

Most current mobile phones connect to a cellular network 
of base stations (cell sites), which is in turn interconnected
 to the public switched telephone network (PSTN) (the exception
 are satellite phones). Cellular networks were first introduced 
in the early to mid 1980s (the 1G generation). Prior mobile phones

 operating without a cellular network (the so-called 0G generation),
 such as Mobile Telephone Service, date back to 1945. Until the mid to
 late 1980s, most mobile phones were sufficiently large that they were
 permanently installed in vehicles as car phones. With the advance of 
miniaturization, currently the vast majority of mobile phones are handheld. 
In addition to the standard voice function of a telephone, a mobile phone can 
support many additional services such as SMS for text messaging, email, packet 
switching for access to the Internet, and MMS for sending and receiving photos 
and video.

The world's largest mobile phone manufacturers 
include Audiovox, BenQ-Siemens, High Tech Computer 
Corporation, Fujitsu, Kyocera, LG, Motorola, NEC,[i-mate]
, Nokia, Panasonic (Matsushita Electric), Pantech Curitel,
 Philips, Sagem, Samsung, Sanyo, Sharp, Siemens SK Teletech,
 Sony Ericsson, T&A Alcatel, and Toshiba.





The telephone or phone is a telecommunications device which is used 
to transmit and receive sound (most commonly voice and speech) across
 distance. Most telephones operate through transmission of electric 
signals over a complex telephone network which allows almost any phone 
user to communicate with almost any other.