Unlocked iPhones can now legitimately be used on NTT/Docomo. http://www.japantoday.com/category/technology/view/iphone-4-to-be-workable-in-docomos-service-areas Docomo isn't selling them but if you have an unlocked iPhone you are welcome to use it on Docomo. Japan Communications is offering a compatible SIM card made just for the iPhone/Docomo. This is huge. Softbank's reception is fine in big cities such as Osaka/Tokyo but pretty bad outside of main areas so I'm sure this will be welcome news to many. Plus Docomo has unlimited data plans. .