1. Technology
You can opt-out at any time. Please refer to our privacy policy for contact information.

Discuss in my forum


What Is EV-DO?

EV-DO is a high-speed network protocol used for wireless data communications, primarily Internet access. EV-DO is considered a broadband technology like DSL or cable modem Internet services.

Certain classes of cellular phones support EV-DO. These phones may be available from various phone carriers around the world including Sprint and Verizon in the U.S. Various PCMCIA adapters and external modem hardware exists to enable laptops and handheld devices for EV-DO.

How Fast Is EV-DO?

The EV-DO protocol uses asymmetric communication, allocating more bandwidth for downloads than for uploads. The original EVDO Revision 0 standard supports up to 2.4 Mbps data rates down but only 0.15 Mbps (about 150 Kbps) up.

An improved version of EV-DO called Revision A increased download speeds up to 3.1 Mbps and uploads to 0.8 Mbps (800 Kbps). Newer EV-DO Revision B and Revision C technology supports significantly higher data rates by aggregating bandwidth from multiple wireless channels. The first EV-DO rev B began rolling out in 2010 with support for downloads up to 14.7 Mbps.

As with many other network protocols, the theoretical maximum data rates of EV-DO are not achieved in practice. Real-world networks may run at 50% or less of the rated speeds.

Also Known As: EVDO, Evolution Data Optimized, Evolution Data Only

©2014 About.com. All rights reserved.