The iPhone Duo lacks variable aperture and a dedicated telephoto camera

The iPhone Duo incorporates several advanced components but omits certain staple features. Specifically, the device lacks Face ID, a dedicated telephoto camera, the Action Button, and variable aperture. Despite these missing elements, the hardware remains highly desirable compared to every Android foldable tested. Apple has strategically stripped back specific functionalities while maintaining high-end specifications, resulting in a device that remains a top choice for users despite the absence of these particular iPhone features.