I think some people here have kind of missed the point of 3G unrestrictor. It's not just for FaceTime. It allows any app to use 3G while tricking it that its on wifi. This means you can download apps etc greater than the 20mb limit imposed by apple. Also you will get better picture quality in apps like BBC iplayer. If you can't see why being able to download more than 20mb without wifi is a good thing, you are not getting the most out of your iPhone!