2G (second-generation cellular service)
Based on digital access to cellular networks. GSM and CDMA are 2G cellular technologies.
3G (third-generation cellular service)
3G mobile standards specify techniques that are capable of supporting more voice traffic and broadband mobile multimedia (speech, audio, text, graphics, and video) services. There are three main 3G services, including WCDMA, CDMA2000, and UMTS TDD. See also 3GPP and 3GPP2.
3GPP (3rd Generation Partnership Program)
A collaborative group that is developing an agreement to jointly create technical specifications for maintaining LTE, GSM, GPRS, and EDGE and for evolving WCDMA and LTE networks. European, Asian, and North American telecommunications standards bodies formed ...