iPhone Duo review: The future is foldable

Apple's iPhone Duo has made a strong debut, with preorders selling out quickly and favorable reviews from critics. The device, which launched on October 16, features a unique dual-screen design with a 7.6-inch OLED display that can fold in half like a book. This internal screen is designed to minimize reflections and hide the crease, with a matte nanotexture finish that enhances the viewing experience.

Reviewers have praised the iPhone Duo's screen animations, comparing them to a lenticular sheet that smoothly transitions from one screen to another. The matte finish also helps to reduce glare and enhance privacy. The larger display is particularly useful for tasks that require more time and effort, while the cover display proves to be more comfortable for typing, especially when rotated into portrait orientation.

Despite the iPhone Duo being late to the foldable market, it has been praised for its design and build quality. Wired describes it as "Apple at its best," while CNET notes that it is "the right fit" for a device of its kind. The hinge is particularly well-received, holding itself in a partially-open position and making it easy to unfold the device.

The camera setup, although not as advanced as the iPhone 18 Pro's triple-camera arrangement, still includes a pair of 48MP Fusion Main and Ultra Wide cameras. Engadget notes that the camera quality matches that of the Samsung Z Fold 8. Despite its heavier and thicker design, reviewers agree that the iPhone Duo is the best foldable phone to date, with hopes for future updates that could include a telephoto camera and Face ID.