Motorola was the first company to produce a handheld mobile phone. On April 3, 1973, Martin Cooper, a Motorola researcher and executive, made the first mobile telephone call from handheld subscriber equipment, placing a call to Dr. Joel S. Engel of Bell Labs, his rival. The phone Cooper used, if you could call it that, weighed a staggering 2.42 lbs and measured in at 228.6x127x44.4mm.   In 1983, Motorola released its first commercial mobile phone, known as the Motorola DynaTAC …