Phone Scoop

printed October 4, 2015
See this page online at:

Home  ›  Glossary  ›


Simultaneous Voice and Data Only

A protocol and technical standard that allows a CDMA phone to use both voice and data networks at the same time. Specifically, when the voice network is CDMA 1xRTT and the data network is CDMA 1xEV-DO, commonly referred to as CDMA 3G.

SVDO is important because CDMA EV-DO 3G (and LTE 4G) networks were initially only built to handle data, not voice. Without SVDO, data service is unavailable during a voice call.

Not all CDMA phones support SVDO.

SVDO only applies to 3G (EV-DO) networks. A different but related standard - SVLTE - applies to 4G LTE data networks.


Still confused? Spot a mistake? Give us your feedback on this definition.

back to Glossary Index

Subscribe to Phone Scoop News with RSS Follow @phonescoop on Twitter Phone Scoop on Facebook Subscribe to Phone Scoop on YouTube Follow on Instagram


All content Copyright 2001-2015 Phone Factor, LLC. All Rights Reserved.
Content on this site may not be copied or republished without formal permission.