Timeline

1988

GSM 900

Uplink - 890 Mhz to 915 Mhz

Downlink - 935 Mhz to 960 Mhz

GSM 1800

1710 Mhz to 1785 Mhz

1805 Mhz to 1880 Mhz

1995

GSM 1900

1850 Mhz to 1910 Mhz

1930 Mhz to 1990 Mhz

1996

120 GSM Networks

2000

150 million GSM users