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The mobile phone was invented in 1973 by Dr. Martin Cooper, a Motorola employee. On April 3, 1973, the first cell phone call was made. The caller was naturally, Dr. Cooper himself. The receiver of the first mobile phone call was Joel Angel, the research head at AT&T's Bell Labs and rival of Dr. Cooper.
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AT&T and Bell Labs had constructed a prototype cellular system
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Caller ID patented by Carolyn Doughty.
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The first commercial cellular system begins operating in Chicago.
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cellular telephone subscribers exceeded one million and the airways were crowded.
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FCC declared in 1987 that cellular licensees could employ alternative cellular technologies in the 800 MHz band.
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The TDMA Interim Standard 54 or TDMA IS-54 was released in early 1991.
