Skype versus facetime. what's the difference?

trying to assess features between iphone 3 versus 4. Facetime sounds like it works inly w iphone 4. But couldn't you use skype on iphone 3 with same results?

Something that is similar to Facetime but works over 3G and Edge is a App call Tango.
I have used to place video calls and it worked ok ( in my case better than Skype),
You do not need the app running in the background to to receive a call, so it will not drain your battery.
if you want, It can work audio only like a normal phone.
Have Video conference (not as good as Facetime but it was better than Skype).
It supports cross platform (phones only)
The only thing is that will not work in a Mac or PC computer, just phones.
You can find it at the App store.

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