Evolution-Data Optimized is a 3G protocol for wireless data transmission used mostly for broadband Internet access. EV-DO uses CDMA to transmit data at speeds of 500 to 1000 Kilobits per second, and is not compatible with GSM networks. Where signal strength is strong, EVDO enables a zone of pervasive computing where multiple devices can seamlessly use high-speed Internet access. Its primary competitor is HSDPA, which allows simultaneous voice and data transmission.
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