Despite how some might feel about Apple’s iPhone, it’s still a pretty hot product and having it on your network would most certainly give customers a reason to sign up with you. Apparently that has been the case over in the Japan as Japanese carrier, NTT DoCoMo, has blamed the iPhone for the loss of some of its customers, whereby they have reportedly lost about 40,800 subscribers to its network in November to their rivals, KDDI and Softbank, both of whom currently offer Apple’s iPhone 5 in their portfolio. It seems that during the same period, both KDDI and Softbank have seen an increase in subscribers by 228,800 and 301,900 respectively. This is probably why we’re sure that T-Mobile is pretty pleased with themselves for finally having signed an agreement with Apple in which they will begin to offer Apple products come 2013. It is unclear at this point exactly what that agreement entails, but it’s safe to assume that iPhones and iPads might be involved. Perhaps sometimes down the road NTT DoCoMo will be able to hop on board the iOS bandwagon, but for now Softbank and KDDI appear to have the upperhand.