Yasuhiro Yamane, a Japanese IT journalist who has covered smartphones and telecommunications for more than 20 years, visited Korea last week. Having amassed more than 1,800 mobile phones, he describes himself as a “mobile…

Yasuhiro Yamane, a Japanese IT journalist who has covered smartphones and telecommunications for more than 20 years, visited Korea last week. Having amassed more than 1,800 mobile phones, he describes himself as a “mobile…