Yup, I remember when I thought having my Motorola RAZR was the epitome of cool, people in Seoul would flip up their seemingly dumber phones and stream crystal clear HD TV in the subway.
For South Korea it's not normal HDTV but a special broadcast for mobile devices, DMB [1]. It was only recently updated to support 720p in favor of 240p. They aren't picking up the domestic ATSC signals. The Japanese mobile video system is a similar separate broadcast.
