Although there has been some back and forth since the original posts, I took crazytiger86 to be commenting about the general unreliability of AT&T 3G service when compared to the WiFi networks on which he would anticipate using Facetime. Once you have activated Facetime on 3G, you will realise that WiFi is much more reliable, and you will realise why the iPhone does not have Facetime activated by default for the AT&T 3G network. If you ever connect on a relatively good array with relatively few people on it, 3G Facetime is great. But that is unusual. You're usually going to connect on an array that is "3G" but only at maybe 500kbps because Pharaoh's Army is trying to use the array the same time that you are. It'll be extremely choppy and laggy. IMHO, it was the right thing to do at this stage of the game for AT&T and Apple to limit Facetime to WiFi. For the time being. Frankly, I'm amazed how good AT&T 3G voice quality usually is for me, considering the limitations you've already specified.