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1G
Nippon Telegraph and Telephone introduced 1G in Tokyo Japan with a speed of 2.4 Kbps -
2G
Radiolinja introduced 2G in Finland with a speed of 64 Kbps -
3G
Hutchison Telecommunications introduced 3G in Japan with a speed of 2 Mbps -
4G
TeliaSonera introduced us to 4G in Stockholm with a speed of 2000 Mbps to 1Gbps -
5G
Qualcomm introduced 5G by South Korea with a speed of 1Gbps and higher