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Did You Know? The first cell phone was invented in 1973 by Motorola. On April 3, 1973, Motorola engineer Martin Cooper made the first-ever cell phone call on the DynaTAC 8000X. The prototype he used weighed 2.4 lb. The prototype offered a talk time of just 30 minutes and took 10 hours to re-charge. It was also anything but cheap with the cost coming around $4,000.