3G refers to the third generation of mobile telecommunications technology. It improved over 2G, 2.5G, GPRS, and 2.75G EDGE networks, providing faster data transfer and better speech quality. 4G and ultimately 5G finally supplanted this network. This network comes under the International Telecommunication Union's International Mobile Telecommunications-2000 (IMT-2000) specifications for mobile devices, telecommunications services, and networks. 3G applications include wireless voice telephony, mobile Internet access, fixed wireless Internet access, video calls, and mobile TV.