The 0% market share may in part be explained by the lack of any handsets being offered on major carriers.
At the announcement of their 2014 phone range, KDDI president Takashi Tanaka told ITMedia that they had no plans to sell a Windows Phone for now.
The last Windows Phone carried by KDDI was the Toshiba IS12T (right), a Windows Phone ahead of its time with a 13 megapixel camera, 32 GB of storage and also waterproof. The handset was last offered in 2011 but the WP7 handset has since been taken off the market.
If Microsoft plans to move the needle in Japan it will need once again to recruit local OEMs, with Sony, who has always expressed some ambivalence about Windows Phone, being the best target.
Until then it seems we will continue to see Kantar numbers such as above for some time.