What is a mobile phone?

What is a mobile phone?

 A mobile phone( cellphone,etc.)( a) is a mobile telephone that can make and take calls over a radio frequence link while the user is moving within a telephone service area, as opposed to a fixed- location phone( landline phone). The radio frequence link establishes a connection to the switching systems of a mobile phone operator, which provides access to the public switched telephone network( PSTN). ultramodern mobile telephone services use a cellular network architecture and thus mobile telephones are called cellphones( or" cell phones") in North America. In addition to telephony, digital mobile phones support a variety of other services, similar as text messaging, multimedia messagIng, email, Internet access( via LTE, 5G NR or Wi- Fi), short- range wireless communications( infrared, Bluetooth), satellite access( navigation, messaging connectivity), business applications, video games and digital photography. Mobile phones offering only introductory capabilities are known as feature phones; mobile phones which offer greatly advanced computing capabilities are referred to as smartphones.( 1) 

The first handheld mobile phone was demonstrated by Martin Cooper of Motorola in New York City on 3 April 1973, using a handset weighingc. 2 kilograms(4.4 lbs).( 2) In 1979, Nippon Telegraph and Telephone( NTT) launched the world's first cellular network in Japan.( 3) In 1983, the DynaTAC 8000x was the first commercially available handheld mobile phone. From 1983 to 2014, worldwide mobile phone subscriptions grew to over seven billion; enough to give one for every person on Earth.( 4) In the first quarter of 2016, the top smartphone developers worldwide were Samsung, Apple and Huawei; smartphone deals represented 78 percent of total mobile phone deals.( 5) For point phones( slang" dumbphones") as of 2016, the top- selling brands were Samsung, Nokia and Alcatel.( 6) Mobile phones are considered an important mortal invention as it has been one of the most extensively used and vended pieces of consumer technology.( 7) The growth in popularity has been rapid-fire in some places, for example in the UK the total number of mobile phones caught the number of houses in 1999.( 8) moment mobile phones are encyclopedically ubiquitous,( 9) and in nearly half the world's countries, over 90 of the population enjoy at least one.( 10) 

History 

A handheld mobile radio telephone service was envisaged in the early stages of radio engineering. In 1917, Finnish innovator Eric Tigerstedt filed a patent for a" pocket- size folding telephone with a veritably thin carbon microphone". Beforehand predecessors of cellular phones included analog radio communications from ships and trains. The race to create truly movable telephone devices began after World War II, with developments taking place in numerous countries. The advances in mobile telephony have been traced in consecutive" generations", starting with the early zeroth- generation( 0G) services, similar as Bell System's Mobile Telephone Service and its successor, the Improved Mobile Telephone Service. These 0G systems weren't cellular, supported many contemporaneous calls, and were veritably precious. 

Smartphone

 Feature phone is a term typically used as a retronym to describe mobile phones which are limited in capabilities in contrast to a ultramodern smartphone. Feature phones generally give voice calling and text messaging functionality, in addition to introductory multimedia and Internet capabilities, and other services offered by the user's wireless service provider. A feature phone has fresh functions over and above a introductory mobile phone, which is only able of voice calling and text messaging.( 18)( 19) Feature phones and introductory mobile phones tend to use a personal, custom- designed software and user interface. By contrast, smartphones generally use a mobile operating system that frequently shares common traits across devices.