First mobile telephone

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. It wasn’t until March 6, 1983, that Ameritech introduced 1G to the United States.21 Eyl 2020

1G mobile communication system was introduced in Japan in 1979 by Nippon Telegraph and Telephone (NTT) . Initially, it started in Tokyo and within next five years expanded to cover the whole of Japan.28 Eyl 2018