when was the first mobile phone released to the public
History of mobile phones In the United States, engineers from Bell Labs began work on a system to allow mobile users to place and receive telephone calls from automobiles, leading to the inauguration of mobile service on 17 June 1946 in St. Louis, Missouri. Shortly after, AT&T offered Mobile Telephone Service. A wide range of mostly incompatible mobile telephone services offered limited coverage area and only a few available channels in urban areas. The introduction of cellular technology, which allowed re-use of frequencies many times in small adjacent areas covered by relatively low powered transmitters, made widespread adoption of mobile telephones economically feasible.
History of mobile phones The Second World War made military use of radio telephony links. Hand-held radio transceivers have been available since the 1940s. Mobile telephones for automobiles became available from some telephone companies in the 1940s. Early devices were bulky, consumed high power, and the network supported only a few simultaneous conversations. Modern cellular networks allow automatic and pervasive use of mobile phones for voice and data communications.
Smartphone In early 2007, Apple Inc. introduced the iPhone, the first smartphone to use a capacitive multi-touch interface.[25] (A year prior the LG Prada was the first mobile phone released with a large capacitive touchscreen,[26] but it was not a smartphone, and its screen was not multi-touch.) The iPhone was notable for abandoning the use of a stylus, keyboard, or keypad typical for smartphones at the time, in favor of a large touchscreen for direct finger input as its main means of interaction. Though one columnist described the initial iPhone as "not a smartphone by conventional terms, being that a smartphone is a platform device that allows software to be installed,"[27] the opening of Apple's App Store a year later not only satisfied this requirement, but it became the new main paradigm for smartphone software distribution and installation.
Smartphone In 1999, the Japanese firm NTT DoCoMo released the first smartphones to achieve mass adoption within a country.[1] Smartphones became widespread in the late 2000s, following the release of the iPhone. In the third quarter of 2012, one billion smartphones were in use worldwide.[2] Global smartphone sales surpassed the sales figures for feature phones in early 2013.[3]