Your phone is capable of it, but none of the US CDMA networks support it. See this official answer from Sprint: »community.sprint.com/baw/thread/85183
My phone is capable of it and it DOES do it. It even works on my EVDO Femtocell provided by Sprint. Also works when connected to the Sprint native network.
How about tethering and talking to someone at the same time? my SGS3 can do it. -- --Standard disclaimers apply.--
