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CDMA2000 is a family of 3G mobile communication standards that evolved from the earlier CDMA (Code-Division Multiple Access) technology. Developed by the 3rd Generation Partnership Project 2 (3GPP2) and standardized by the ITU, CDMA2000 offers higher data speeds, improved voice quality, and enhanced network capacity compared to 2G systems. It includes multiple versions, such as CDMA2000 1X for voice and basic data, and CDMA2000 EV-DO (Evolution-Data Optimized) for high-speed mobile broadband. Widely adopted in North America and parts of Asia, CDMA2000 was a major competitor to the GSM-based 3G technologies before being phased out in favor of LTE and 4G networks.
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