Japan’s smartphone unit shipments jumped +33% YoY in the first quarter of 2012, thanks to the extended availability of Apple iPhone, enriched Android portfolios from international brands and local manufacturers, as well as a quicker uptake of LTE models. Fujitsu, Apple, and Sharp ranked as the top 3 smartphone vendors in the country. This published report -- available to download by clients of our Country Share Tracker (CST) service -- tracks smartphone vendor market share by quarter at all major operators in Japan, including NTT Docomo, Softbank and KDDI. The report can be used by device vendors, component makers, content developers, vehicle manufacturers and others to identify winners and losers by carrier in the high-value Japanese smartphone market.