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The ratio of 3G users among wireless subscribers reached 95 %, and the ratio of fiat-rate users reached approximately 50 % in Japan, in 2009. This creates an ideal mobile broadband environment for rich media services. Constraints and diversity as well as the speed of changes, represent the challenges in the development of mobile services. There are several different stage views of the mobile service...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.