In 1979, the first generation (1G) of cell phone technology was rolled out in Tokyo, Japan. Its use was confined to car phones inside the city of Tokyo, but for the first time calls were switched over without the need for a human switchboard operator. Within five years, Japan had the first national 1G network. The evolutions from 1G to 4G technologies have widened the uses of handheld devices. 5G technology is expected to have the capacity to service everything from cell phones to smart street lights to driverless cars.
Because of its immense capacity,
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