Happy 20th Birthday GSM
Harri Holkeri, then prime minister of Finland, makes the world’s first GSM call on 1 July 1991 from Esplanadi Park, Helsinki, Finland. The network was built by Telenokia and Siemens - today’s Nokia Siemens Networks - for the Finnish operator Radiolinja that now operates under the name Elisa. Today, 20 years later, there are over 4.4 billion GSM mobile subscriptions. GSM is the fastest growing technology in history.
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