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(CNN) -- 50 years: A conference in Stockholm today celebrates the 50th anniversary of the world's first mobile telephone system. In 1956 the telecommunications company Ericsson created the pioneering mobile network called "Mobile Telephony A " (MTA) in the Swedish capital. 40 kgs: The weight of the MTA radio equipment, which was designed to be installed in the trunk of a car. 1973: The year Motorola employee Martin Cooper placed the first mobile phone call using a handheld protoype. Cooper called a rival at AT&T's Bell Labs. 1981: The year Ericsson launched the world's first modern mobile network, called Nordic Mobile Telephony. 1991: The year the GSM pan-European standard network was introduced. 2001: The year 3G was introduced, offering mobile broadband services of up to 3.6 megabytes per second. 2.5 billion: The number of people in the world now estimated to own a mobile phone. 80: The percentage of the world's population with mobile coverage. 111: The number of mobile phone subscribers per 100 people in Taiwan, which has the heaviest mobile phone use in the world. The pioneering mobile phone system was installed in the trunk of a car and weighed 40 kgs. Quick Job Search |