User:Mudiojas

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The first mobile telephone call was made on 17 June 1946 from a car in St. Louis, Missouri, USA, using the Bell System's Mobile Telephone Service.[10] This was followed in 1956 by the world’s first partly automatic car phone system, Mobile System A (MTA) in Sweden. The MTA phones were composed of vacuum tubes and relays, and had a weight of 88.2 pounds (40 kg).[11][12] John F. Mitchell, Motorola's chief of portable communication products and Martin Cooper's boss in 1973, played a key role in advancing the development of handheld mobile telephone equipment. Mitchell successfully pushed Motorola to develop wireless communication products that would be small enough to use anywhere and participated in the design of the cellular phone.[13][14] Martin Cooper, a Motorola researcher and executive, was the key researcher on Mitchell's team that developed the first hand-held mobile telephone for use on a cellular network. [15] Using a somewhat heavy portable handset, Cooper made the first call on a handheld mobile phone on April 3, 1973 to his rival, Dr. Joel S. Engel of Bell