Shipments of mobile phones in Japan surged in June as consumers continued to switch to more advanced 3G services. According to figures from the Japan Electronics and IT Industries Association, 4.01 million units were shipped in June, up 21% on the previous month. Japan’s three main cellular operators, KDDI, NTT DoCoMo and Vodafone KK, have been aggressively marketing high speed services by offering fixed-rate monthly tariffs for data transmission. Although shipments in June improved from the month before, they were down 15.5% on the June 2003 figures. This was the sixth straight month that shipments have fallen year-on-year.