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TO GO WITH: Lifestyle-Internet-IT-Japan-addiction,FEATURE-SPECIAL by Harumi Ozawa This image picture taken on January 14, 2015 shows Japanese college student Masaki Shiratori using the internet on a smart phone. High school girls in Japan spend an average of seven hours a day on their mobile phones, a survey by information security firm Digital Arts revealed this week, with nearly 10 percent of them putting in at least 15 hours. Boys of the same age average just over four hours mobile phone use a day, the research found. AFP PHOTO / KAZUHIRO NOGI (Photo credit should read KAZUHIRO NOGI/AFP/Getty Images)

TO GO WITH: Lifestyle-Internet-IT-Japan-addiction,FEATURE-SPECIAL by Harumi Ozawa This image picture taken on January 14, 2015 shows Japanese college student Masaki Shiratori using the internet on a smart phone. High school girls in Japan spend an average of seven hours a day on their mobile phones, a survey by information security firm Digital Arts revealed this week, with nearly 10 percent of them putting in at least 15 hours. Boys of the same age average just over four hours mobile phone use a day, the research found. AFP PHOTO / KAZUHIRO NOGI (Photo credit should read KAZUHIRO NOGI/AFP/Getty Images)
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AFP KAZUHIRO NOGI