Forty years ago, on April 3, 1973, Martin Cooper, the inventor of the first cellular phone, made the first mobile call to his rival friend working for different telephone company. He was one of the senior engineers at the Motorola Company, who was really very happy at this exciting invention.
Both the inventions have their own importance and both the inventors use their resources to make such valuable devices of their time. We salute both of the great scientists who have provided us two precious inventions which rapidly took over the world from one corner to the other.
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