The Universal Mobile Telecommunications System is one of the 3rd generation mobile phone technologies that allow a higher data rate than GSM does. Originally UMTS was standardised by ETSI but today it is supported by 3GPP.
UMTS uses usually W-CDMA as the the underlying air interface. The offered high data rate enables a connection to the World Wide Web as well as videoconferencing, chat, downloading music and video files, watch TV, navigation and further services.

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