Quadband??? That's not an American thing; we use two bands (850 & 1900), you use two bands (900 & 1800). You wanna work on all of them, you use a quadband phone. You wanna work in Europe etc., use a dualband 900/1800. You wanna work in the US, use a dualband 850/1900.

It's the evil multinational corporations that need quadband...