This site describes it pretty well:
http://www.arcx.com/sites/Samsung Galaxy Nexus.htm
The Captivate is pretty lousy, but definitely not the worst out there. I couldn't hold a conversation in most places in my house. It's a pretty good test, as some phone can't get decent service anywhere in the house, others you can wander all around and keep a conversation.
You can actually look at RF performance on wifi too. The iPod Touch has some of the lousiest RF performance out there, and I think the iPhone is pretty bad too, although I haven't really tested it. Mac laptops seem to be very good in area. It is less critical with wifi, however, as you are usually very close to the base station, and at home, you can build out coverage for devices with additional APs, antennas, etc, whereas the cell networks are what they are, and your location will vary a lot.
One big issue with the reviewers and RF is that a lot of them live and test in urban environments that are bathed with cell sites every few miles, especially with T-Mobile in SF and NYC, but true of all carriers. You have to go out a ways where you have one tower, and you can fade out to a bar or even no service on any phone to really see how well they perform on a very weak signal. It's unfortunate that so little is put towards RF, as it dictates how useful a connected device is. Over the past decade, the RF performance of phones has gone way down. I remember the days of AMPS phones that had flip-out antennas that were 6" long, and could pick up a signal 5 miles away from a tower. Now, you're lucky to be able to connect at 2 miles in my area, if even that. We went from flippy antennas to nubs to internal antennas to make them look better, but largely ignored their ability to pick up weak signals.
All that being said, the best thing to do now is to pay very close attention to the RF performance of a device. I bought a Captivate because there was nothing else out that met my needs, and I suffered as a result. Now the 4S works much better, with it's top notch RF. You couldn't pay me to use another Samsuck device.
@Neon01: Conclusion, the RF isn't crap, it's mediocre. And mediocre often won't cut it. There are much worse phones out there, but there are better ones (DROID series, iPhone 4S, etc).
EVERY SINGLE ONE of your sources talked about
call quality,
which is not RF performance. Clearly, Engadget was in a strong signal area to be getting 8mbps. Being stable and good sounding is great, until you get in an area where you don't have a good signal, and the iPhone is chugging away with 100kbps of data that works half the time, and making phone calls that are semi-reliable and texts are sending 80% of the time, and the Gnex is dead in the water and can
maybe send a text upside-down in the air
if you're lucky and
holding it the right way.