First generation 1G
The first network to be launched as a mobile network was the G1 network and was launched by NTT of Japan in 1979. The network was limited only to the industrial sector or companies only in Japan, but this did not last more than 5 years until the network covered all of Japan To be the first global country to operate this network
The first network to be launched as a mobile network was the G1 network and was launched by NTT of Japan in 1979. The network was limited only to the industrial sector or companies only in Japan, but this did not last more than 5 years until the network covered all of Japan To be the first global country to operate this network
The second generation 2G
The second generation of communications has a maximum data transfer capacity of 114 Kbps. The G2 technology was introduced in the early 1990s and relied on wireless communications from the outset, but the network was improved and the second generation was launched to include more voice and email services And text messaging, this generation is characterized by a problem in the revolution when companies began to develop this generation, making it incompatible in countries, for example America worked in 3 different systems in America alone and other systems in Europe and Japan. It was the first addition to the MMS - Multimedia Message Service and was also the first network to transfer data to benefit from the Internet.
The third generation 3G
Or it can also be called IMT-2000. Many versions of services have been developed for this generation, whose transmission rates have been estimated from 153 Kbps up to 14 Mbps. The third generation was launched at the beginning of the new millennium after a major work of almost two decades by the International Telecommunication Union (ITU). As usual, Japan was the first to announce it in 1998 but only launched in October 2001. This new technology included all the services in previous communication technologies with new services such as video calling and improved Internet access from smartphones and GPS.
The fourth generation 4G
The fourth generation of wireless communications has been developed from the second and third generation significantly to reach the high efficiency and speed of data transmission. The fourth generation was introduced in 2002 and KT Korea was the first company to launch a 4G service. The service was WiMAX connected to the Internet in April 2006, but as the fourth generation standards were set, WiMAX and many other technologies that worked on the fourth generation are ineligible, until the LTE Advanced technology was introduced in December 2009 in Sweden as the first country to introduce the technology commercially. LTE is the technology closest to the standards for bandwidth and Bandwidth, with a maximum data transfer rate of 100 Mbps and the ability to watch TV channels clearly on devices with the protocols required to deal with 4G services.

Finally, it should be noted that South Korea, according to the latest statement, is in the stage of development of the fifth generation of wireless networks, the latter, which according to the words will enable the user to speed Internet imagination of 1 Gb / s, and to accommodate this speed, you can adopt to download a movie quality Full HD in seconds and text or two seconds!