Mary Meeker shows in this presentation a ranking of countries by users of 3G devices. United States is the number 1 country with 179 million users and Japan ranks second with 117 million users. Looking at the penetration rates we can see that Japan ranks first with an incredible 97% and Korea second with a 82%. My home country, Spain, fares pretty well with 30 million users and a penetration rate of 53%.
