Credit:
We've gone through the features yesterday, but the folks at Engadget mention a very interesting glitch (or feature) that was previously unreported. It seems that you can make Skype calls over 3G network if you have the beta 3.0 OS installed on your iPhone; unfortunately, in that case the application is also quite unstable. On the other hand, if you have the latest official software, Skype works well, but you can only make calls through WiFi. We can't say what the future will bring, but I'm guessing that the "support" for calls over 3G will be removed in the next version.