Well, we all know that the iPhone has set the standard for all other mobile devices to aspire too. That means, in my opinion, over the next year we will see most of the competing phones come out with thier own version facetime video calling. My son who's become rather skeptical, argues that Apples facetime will not be compatible with any of the other phones versions. I disagree. I believe when Samsung comes out with thier version of facetime, that iPhone 4 owners will be able to make facetime calls to these phones. Is there a definitive answer to this question yet?