8 Things to Know About the iPhone Duo

Apple’s $1,999 iPhone Duo introduces a folding design with a 5.4-inch outer screen and a 7.6-inch inner display, but the new format brings practical compromises. Many third-party apps are not yet properly adapted, and the phone replaces Face ID with Touch ID, so buyers may need to adjust to changes in both software and authentication.

Several major apps have been optimised for iOS 27.1, though some still have interface problems. MagSafe works, but the phone’s uneven weight can make it tilt on mounts, while existing magnetic wallets may stick out because the Duo is shorter than other iPhones. The article also recommends using the rear cameras for selfies, which can be previewed on the outer screen.