I want a phone that can work in the US and internationally.. if I am correct, the international wireless standard is GSM right? what is the frequency or are their multiple frequencies? Basically is there a phone that can work pretty much in any country around the world? and if so, what is that standard called? Will verizon offer a phone with GSM or other international standards anytime soon? if so, you think it will be very expensive? is this what quad-band means?