Evolution Data Only or Evolution Data Optimized, often abbreviated as EVDO, EV-DO, EvDO, 1xEV-DO or 1xEvDO is a wireless radio broadband data protocol being adopted by many CDMA mobile phone providers in Brazil, Japan, Korea, Israel, the United States, Australia and Canada as part of the cdma2000 standard. 1xEVDO is pronounced "One Ex-E:- Vee-Dee-Oh." It is commonly referred in the industry as DO (Dee-Oh). Compared to 1xRTT networks currently being used by operators, or the GPRS and EDGE networks employed by their GSM competitors, 1xEV-DO is significantly faster, providing access terminals with download speeds of up to 2.4 Mbit/s. Only terminals with 1xEV-DO chipsets can take advantage of the higher speeds.