The First Mobile Phone
The first fully automatic mobile phone system, called MTA (Mobile Telephone system A), was developed by Ericsson and commercially released in Sweden in 1956. This was the first system that didn’t require any kind of manual control, but had the disadvantage of a phone weight of 40 kg (90 lb). MTB, an upgraded version with transistors, weighing 9 kg (20 lb), was introduced in 1965 and used dual-tone multi-frequency signaling. It had 150 customers in the beginning and 600 when it shut down in 1983.
The handsets division of Ericsson was given a fresh start in the form of a joint venture with Sony called Sony Ericsson in 2001.In the 1990s, ‘second generation’ (2G) mobile phone systems such as GSM, IS-136 (“TDMA”), iDEN and IS-95 (“CDMA”) began to be introduced. The first digital cellular phone call was made in the United States in 1990, in 1991 the first GSM network (Radiolinja) opened in Finland. 2-G phone systems were characterized by digital circuit switched transmission and the introduction of advanced and fast phone to network signaling.
A Little Handy
Dr. Martin Cooper of Motorola, made the first US analogue mobile phone call on a larger prototype model in 1973.
The first handheld mobile phone to become commercially available to the US market was the Motorola DynaTAC 8000X, which received approval in 1983.
THIS was the First Generation Mobile Phone ( 1G – Mobile ).
Second Generation Mobile Phones ( 2G )In the 1990s, ‘second generation’ (2G) mobile phone systems such as GSM, IS-136 (“TDMA”), iDEN and IS-95 (“CDMA”) began to be introduced. The first digital cellular phone call was made in the United States in 1990, in 1991 the first GSM network (Radiolinja) opened in Finland. 2-G phone systems were characterized by digital circuit switched transmission and the introduction of advanced and fast phone to network signaling.
Third Generation Mobile Phones ( 3G )The most significant feature of 3G mobile technology is that it supports greater numbers of voice and data customers — especially in urban areas — and higher data rates at lower incremental cost than 2G.
It also allows the transmission of 384 kbit/s for mobile systems and 2 Mb/s for stationary systems. 3G users are expected to have greater capacity and better spectrum efficiency, which allows them to access global roaming between different 3G networks
3G handsets usually have cameras, music players, video players, contactless smartcards for payment functions (wallet phones), Web browsers, email clients and more. This shows that the UMTS system is based on layered services and future applications can be supported without too much impact to the underlying radio access network.
Fourth Generation Mobile Phones ( 4G )4G is being developed to accommodate the quality of service (QoS) and rate requirements set by forthcoming applications like wireless broadband access, Multimedia Messaging Service, video chat, mobile TV, High definition TV content, Digital Video Broadcasting (DVB), minimal service like voice and data, and other streaming services for “anytime-anywhere”.
4G will be a fully IP-based integrated system. This will be achieved after wired and wireless technologies converge and will be capable of providing 100 Mbit/s and 1 Gbit/s speeds both indoors and outdoors, with premium quality and high security.