I'm trying to download the Denwacho Kantan Copy app for iOS so that I can transfer my contacts to my new softbank iPhone. However, I am being told that I can't download this app with my American Apple ID account. I have downloaded countless apps in Japan without having this problem. Please help! Kantan means easy in Japanese and this has been anything but easy. I have already tried changing my apple ID to a Japanese one, but this cannot be done without a Japanese credit card...which is very difficult to acquire here for foreigners. If I was able to purchase this phone using the security of my American credit card, why shouldn't I be able to do something simple like transfer my contacts?? Everything else works fine!
You can try following this procedure (Youtube Video) to create an Apple ID in iTunes without a Credit Card, substituting US for Japan.