Filters. (1) (1st Generation ) A 1G denotes the first generation of something, such as 1G cellular was the first implementation of the cellular phone system. See cellular generations.
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Launched by Nippon Telegraph and Telephone in 1979, 1G was first introduced to the citizens of Tokyo. By 1984, the first generational network covered all of Japan, making it the first country to have 1G service nationwide.21 Eyl 2020
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