In 1973, Martin Cooper made the first public mobile phone call while working for which telecommunications company?
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Martin Cooper of Motorola made the historic first call to his rival, Joel Engel of Bell Labs, using a prototype DynaTAC phone. That hefty device weighed over two pounds and took ten hours to charge for just thirty minutes of talk time. Photo: GS200, Wikimedia Commons, CC BY-SA 3.0.
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Source: Wikipedia (CC BY-SA)
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