The first GSM phone was introduced in Finland in July 1991 which has marked the beginning of a new era of telecommunications
On 1 July 1991 it was twenty years ago made the first call to the world of GSM commercial network between the then Finnish Prime Minister Harri Holkeri and Kaarina Suonio deputy mayor of the city of Tampere.
The first GSM network was built by Siemens and Tele Nokia – Nokia Siemens Networks today. The theme of the first telephone conversation via GSM (Global System for Mobile Communications) benefits the new GSM digital technology in terms of voice quality and security. The GSM system was adopted in 1987 in Europe as the standard for digital mobile telephony.
The second generation of cellular technology allowed the data and voice traffic. The international roaming and short message service laid the foundation for the boom in the use of the phone. In the following years, the number of GSM subscribers grew exponentially well beyond expectations, more than 500 million in the first decade.
The current GSM comprises of 838 networks in 234 countries around the world with over 4.4 billion users. GSM is still growing with 1 million new users being added every day, about 12 per second.