1.5 billion mobile handsets sold in 2011, nearly one third are smartphones. Nokia is still top dog for handsets, but Samsung and Apple sold more smartphones.
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Here is a useful baseline statistic calculated by MobileWebGo
Spending on mobile, Internet-based advertising was 15% of all spending on Internet advertising in Japan for the year 2009.
http://www.mobilewebgo.com/japan-mobile-internet-advertising-15-total-internet-advertising
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Here is a useful baseline statistic calculated by MobileWebGo
Spending on mobile, Internet-based advertising was 15% of all spending on Internet advertising in Japan for the year 2009.
http://www.mobilewebgo.com/japan-mobile-internet-advertising-15-total-internet-advertising