I was able to make a face time call over 3G. I have a 3G laptop connect card for my laptop. I shared it's connection making my laptop into a mobile hot spot. The iPhone 4 picked up the signal from the laptop, making it think that it was on a wifi signal. Face time call made. Now I hope that when the jailbreak comes out for the iphone 4, that someone smart could make something to make the phone think it's on a wifi signal. Anyone with a laptop connect card try it out. Worked pretty good for me.
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