GSM

The first mobile telephone call was made on 17 June 1946 from a car in St. Louis, Missouri, USA, using the Bell System’s Mobile Telephone Service. This was followed in 1956 by the world’s first partly automatic car phone system, Mobile System A (MTA) in Sweden. The MTA phones were composed of vacuum tubes and relays, and had a weight of 88.2 pounds (40 kg).... Read more »

October 7, 2012 at IST / Science & Technology.