iPhone Duo
Apple's first book-style foldable smartphone, featuring a dual-screen design with both an inner and outer display. The device runs iOS and is positioned in the premium foldable smartphone market segment.
Core Facts
At the "Surprise and shine" launch event, Apple skipped the base iPhone 18 and only introduced the iPhone 18 Pro, Pro Max, and the foldable iPhone Duo.
Based on official product images, the iPhone Duo adopts a dual independent display folding design rather than a single flexible OLED screen folded in half.
Timeline (last 90 days)
The iPhone Duo is considered Apple's first foldable-screen phone, offering three typical usage postures: tent mode, book mode, and clamshell mode.
Apple's developer relations team has released the latest issue of the Hello Developer newsletter, whose core topic is helping developers submit iPhone Duo apps.
Tent mode can display a clock and calendar, book mode supports split-screen notes and messaging interfaces, and clamshell mode is suitable for playing content such as fitness videos.
Starting from April 2027, all submitted apps or games must include screenshots of the iPhone Duo.
App Store Connect added a preview tool that lets developers visually check how screenshots, product page headers, and other metadata appear on the iPhone Duo product page.
Apple updated the specification requirements for screenshots and app previews, covering the latest devices including iPhone Duo.
Apple has provided a guidance document titled "Three steps to make your app shine on iPhone Duo" as well as a detailed introduction page for the iPhone Duo.
The name Duo implies that the device may have form-factor changes such as folding or dual screens, so adapting posture and orientation is more complex than for traditional bar phones.
The Huawei Mate X7 starts at 11,999 yuan, priced lower than the iPhone Duo.
The iPhone Duo weighs 254 grams, making it the heaviest iPhone ever.
33 more timeline events
All Facts (20)
At the "Surprise and shine" launch event, Apple skipped the base iPhone 18 and only introduced the iPhone 18 Pro, Pro Max, and the foldable iPhone Duo.
80%Partially VerifiedBased on official product images, the iPhone Duo adopts a dual independent display folding design rather than a single flexible OLED screen folded in half.
65%UnverifiedThe dual-screen design of iPhone Duo is closer to the design concept of the Microsoft Surface Duo than to a single flexible OLED screen folded in half.
60%UnverifiedTent mode can display a clock and calendar, book mode supports split-screen notes and messaging interfaces, and clamshell mode is suitable for playing content such as fitness videos.
50%UnverifiedThe iPhone Duo is considered Apple's first foldable-screen phone, offering three typical usage postures: tent mode, book mode, and clamshell mode.
50%UnverifiedThe name Duo implies that the device may have form-factor changes such as folding or dual screens, so adapting posture and orientation is more complex than for traditional bar phones.
50%UnverifiedStarting from April 2027, all submitted apps or games must include screenshots of the iPhone Duo.
50%UnverifiedThe Huawei Mate X7 starts at 11,999 yuan, priced lower than the iPhone Duo.
50%UnverifiedAndroid foldables proactively disable the cover screen when using the main camera for selfies to prevent accidental touches, a mechanism the iPhone Duo currently lacks.
50%UnverifiedThe Xiaomi 18 Fold and iPhone Duo have identical body dimensions, use the same aspect ratio for both inner and outer screens, and both feature a D-shaped display.
50%UnverifiedThe iPhone Duo weighs 254 grams, making it the heaviest iPhone ever.
50%UnverifiedThe Xiaomi 18 Fold is 30 grams lighter than the iPhone Duo.
50%UnverifiedThe iPhone Duo has only a main camera and an ultrawide lens, with no telephoto and no Face ID.
50%UnverifiedThe iPhone Duo hides its selfie camera under the display (UDC), while the Xiaomi 18 Fold uses a corner punch-hole solution.
50%UnverifiedThe iPhone Duo supports only two apps displayed side by side, whereas Android foldables support multi-window, bubble windows, floating windows, and three apps on screen simultaneously.
50%UnverifiedThe virtual Walkman app uses one screen to display an animation of spinning cassette tape reels, while the other screen handles controls and information display.
50%UnverifiedThe iPhone Duo will launch running iOS 27.1 rather than iOS 27.2.
50%UnverifiedXcode 27.1 will add development support for the iPhone Duo, including an updated SDK and a simulator supporting new postures and orientations.
50%UnverifiedThe iPhone Duo was released later than the foldable smartphones from the Android camp.
50%UnverifiedApple is not the first company to announce a passport-form-factor folding design.
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