Following a prior interview in which he state that the debut of the title was possible on mobile platforms, Square Enix producer Takashi Tokita has not clarified in an interview with Shacknews (via The Verge) that a release of Final Fantasy VII on iOS devices is "years" away because of the space limiations of the platform. Notably, Apple's size limit for an iOS app is 2GB, with the over-the-air download limit
