Just got an iPhone 4 yesterday, and I love it. However I can't really get my head around how facetime works. Does it only work on wifi, or can you use it on 3G? What about 'facetimeing' with a friend in the States (I'm in the UK), is it going to cost alot, or will it be free on wifi? Does it count as a call, or is it just data like skype would do?
Hopefully someone can answer my question
