NEPRO JAPAN recently published the results of a survey into economising on one’s mobile phone bill. On one day in mid-December of last year they questioned 3,425 people across the three main Japanese carriers, DoCoMo’s iMode, Softbank’s Yahoo! Keitai and au and TU-KA’s EZweb, by means of a public poll available through the main menus of all three carriers’ systems. 44% of the sample were male; 3% were teenagers, 35% in their twenties, 44% in their thirties, and 18% aged forty and over. Similar questions were asked of a similar group around the same time last year, so one can perhaps observe a trend over the past year. Full details with graphs Here.