Unlike fixed location phones (land line phones), mobile phones (also known as cell phones[a]) are portable phones that can make and receive calls over a radio frequency link while the user is moving within a telephone service area. By connecting to a mobile phone operator's switching systems, a radio frequency link gives users access to the public switched telephone network . In North America, mobile phones are referred to as cell phones (or "cell phones") since modern mobile phone services employ a cellular network architecture. Digital mobile phones support a wide range of other services in addition to calling, like tenting, multimedia messaging, email, Internet access (through late, NR, or wife), short range wireless communications (infrared, blue tooth), satellite access (messenger connectivity, navigation )digital photography, video games, and business applications. smart phones are mobile phones with significantly more advanced computing capabilities than feature phones, which are only capable of basic functions.April 3, 1973, Motorola's Martin Cooper gave a demonstration of the first handheld mobile phone in New York City. The device weighed about two kilograms (4.4 pounds).[2] Nippon Telegraph and Telephone (NTT) introduced the first cellular network in history in Japan in 1979.[3] The DynaTAC 8000x was the first handheld mobile phone to be sold commercially in 1983. Globally, the number of mobile phone subscribers increased to over seven billion between 1983 and 2014enough to give one to every person on the plane t.[4] As of the first quarter of 2016, Sam sung, Apple, and Howe were the top three smart phone developers globally. Sales of smart phones accounted for 78 percent of all mobile phone sale s.[5] In terms of feature phones (also known as "dumb phones"), Sam sung, nuke and Alcott were the top three brands sold in 2016. Since they are among the most popular and widely used consumer electronics, mobile phones are regarded as a significant human invent ion.[7] In certain regions, the rise in popularity has been swift; in the UK, for instance, the total number of mobile phones surpassed the total number of houses in 1999.[8] Nowadays, mobile phones are widely used everywhere in the world], with over 90% of people owning one in almost half of the nations.
History
In the early days of radio engineering, a portable mobile radio telephone service was envisaged. A patent application for a "pocket size folding telephone with a very thin carbon microphone" was made in 1917 by Finnish inventor Eric tit. Radio communications from trains and ships in the an log era preceded cell phones. Following World War II, numerous nations started competing to develop genuinely portable phone devices. Beginning with the early generation (g) services, like the Bell System's Mobile Telephone Service and its successor, the Improved Mobile Telephone Service, the advancements in mobile telephony have been tracked in successive "generations". These co systems were very expensive, did not support many simultaneous calls, and were not cellular.Based on the GSM standard, Radiolinja introduced second-generation (2G) digital cellular technology in Finland in 1991.
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