The Joongang Daily has a nice summary of the nation's progress toward full-scale 4G (fourth generation) mobile service, accompanied by a summary graphic (click to see a larger version of the graphic). As the article notes,with a data transfer speed of 100 megabytes per second, 4G services allow users to enjoy higher-speed Internet and services that couldn’t be handled by 3G, including high-quality multimedia support such as HD and 3-D video streaming and network games.The article suggests that KT is lagging in 4G deployment which, strictly speaking, is not an accurate characterization. Rather, KT chose to build out its WiBro network before investing heavily in LTE. WiBro itself, developed in Korea, is a legitimate 4G service, even if a bit slower than LTE.