The quad-band Sony Ericsson Xperia Arc features a 4.2-inch Reality touchscreen display with Sony Mobile BRAVIA Engine, 512MB of RAM, 8-megapixel camera, and quick access to Facebook functions. You can tag photos in your gallery, “like” a song on a playlist, and connect with your Facebook friends.
The Xperia Arc will cost you $600. Like I said, it's unlocked!
source: Gadget.com