Well I called Samsung technical support for giggles, and after a 5 minute wait the Rep (who I could barely understand due to the accent) said the device does support EVDO Rev. B, yet she had to ask me to spell it out exactly and ask me to correct her on what I was looking for a couple of times. In other words, she had no idea what EVDO even is. Yet she did come back and say the phone supports it. Then when I asked for documentation that states it, she said she could not provide it, and to check the Samsung website for updates on the specifications.
Yeah ....
the quest continues.