In a new interview, Apple CEO John Ternus and senior vice president of worldwide marketing Greg Joswiak discussed the secret development of the iPhone Duo. Joswiak said they 'put extra security on it' and used a funny codename unrelated to the project, calling it Apple's best-kept secret in years. He expressed being 'super proud' of how well the project was concealed despite rumors and leaks.

Ternus described the moment they knew the design was right, saying, 'you get that first design model or prototype and you go, oh, this is it.' He emphasized the complexity and engineering of the device, noting its value despite being the most expensive iPhone ever made. Joswiak highlighted outreach to third-party developers to prepare for the Duo’s unique form factor, noting strong enthusiasm from partners. Both executives positioned the iPhone Duo as a hybrid device—'like your iPhone... but open it up to this massive display, and it's a whole new experience'—while also mentioning the iPhone 18 Pro as a suitable alternative for some users.

The interview underscored Apple’s focus on innovation, secrecy, and user-centric design.