“NTT DoCoMo Inc., the largest wireless carrier in Japan, has lost 3.2 million users over the last 4 and a half years without carrying the iPhone, yet the carrier remains steadfast in refusing to make a deal with Apple.”

http://appleinsider.com/articles/13/07/05/pressure-mounts-on-japans-largest-carrier-as-it-still-refuses-to-carry-apples-iphone