Services advertised as 3G are required to meet IMT-2000 technical standards, including standards for reliability and speed (data transfer rates). However, 3G services have largely been supplanted in marketing by 4G and 5G services in most areas of the world.

Several telecommunications companies marketed wireless mobile Internet services as 3G, indicating that the advertised service was provided over a 3G wireless network. The first commercial 3G networks were introduced in mid-2001. Each generation is characterized by new frequency bands, higher data rates and non–backward-compatible transmission technology. This ensures it can be applied to wireless voice calls, mobile Internet access, fixed wireless Internet access, video calls and mobile TV technologies.Ī new generation of cellular standards has appeared approximately every tenth year since 1G systems were introduced in 1979 and the early to mid-1980s. Later 3G releases, often denoted 3.5G and 3.75G, also provide mobile broadband access of several Mbit/s to smartphones and mobile modems in laptop computers.

ģG telecommunication networks support services that provide an information transfer rate of at least 144 kbit/s. 3G finds application in wireless voice telephony, mobile Internet access, fixed wireless Internet access, video calls and mobile TV. This network is based on a set of standards used for mobile devices and mobile telecommunications use services and networks that comply with the International Mobile Telecommunications-2000 (IMT-2000) specifications by the International Telecommunication Union. This network was superseded by 4G, and later on by 5G. It is the upgrade over 2G, 2.5G, GPRS and 2.75G Enhanced Data Rates for GSM Evolution networks, offering faster data transfer, and better voice quality. 3G is the third generation of wireless mobile telecommunications technology.

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