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Deleted member 17706
Unconfirmed Member
You can sign out of your US account on your phone and switch to the Japanese account, and then launch the games and make the IAP purchases. Everything else will work just fine, and updating your US apps will just ask you once for the password.
Interesting. Do you know if apps typically verify account rights each time you boot it up? I'm wondering if I can switch over to my Japanese account, buy the content, and then switch back over to my U.S. account and access that content.