--- title: "iPhone Duo vs. the Trend: Apple Chose a Wide-Format Foldable Design 'Like a Paper Notebook'" description: "Apple unveiled the foldable iPhone Duo with unusual wide-format proportions based on the A-series paper formats. The designers explained the choice of form factor, the titanium frame, and the adaptive hinge." date: 2026-09-21T09:16:00.000Z lang: en url: https://xab.info/en/posts/iphone-duo-wide-format-design-apple tags: [apple, iphone-duo, foldable-smartphone, design, titanium] publisher: "XAB.info" --- # iPhone Duo vs. the Trend: Apple Chose a Wide-Format Foldable Design 'Like a Paper Notebook' ![iPhone Duo против тренда: Apple выбрала широкоформатный складной дизайн «как бумажный блокнот»](https://xab.info/media/2026/09/21/iphone-duo-shirokoformatnyj-dizajn-apple/iphone-duo-shirokoformatnyj-dizajn-apple-1.webp) ## 🎯 Key Points - The iPhone Duo features wide-format proportions instead of the narrow, tall body of its competitors - The design is based on the A-series paper formats: the aspect ratio is preserved when folded in half - The device is equipped with a curved titanium frame and a hinge with variable resistance - Steve Lemay stated that the software is built on work done on the iPad, Macintosh, and iPhone for a seamless transition between modes Apple has gone against the main trend in foldable smartphones: instead of the narrow, tall body offered by competitors, the company unveiled the iPhone Duo with unusual wide-format proportions. Behind this design bet stand two key figures — chief designer Molly Anderson and Vice President of Interface Design Steve Lemay — who publicly explained why Cupertino consciously abandoned the familiar form factor and exactly how the device should feel in the user's hands. ### Against the Trend: Wide Format Instead of Narrow The main difference between the iPhone Duo and other foldable smartphones is the geometry of the screen and body. Where most models yield a stretched 'vertical' panel when unfolded, Apple bet on a wide format. According to Molly Anderson, in its folded state the device remains compact and convenient to carry, while unfolded it offers noticeably more working space. It is precisely this pair of properties — compactness in the pocket and room on the desk — that became the starting point for choosing the proportions. ### 'Paper Notebook': The Design Philosophy The central idea voiced by Molly Anderson is to make the gadget feel like a traditional paper notebook. The proportions of the iPhone Duo are based on the international A-series paper format system, in which the aspect ratio remains unchanged even when the sheet is folded in half. This approach preserves a unified visual perception of the content in both the folded and unfolded states, which, by the designers' intent, makes the transition between modes natural and not 'jumpy.' ### Titanium Frame and Adaptive Hinge Among the structural features of the iPhone Duo are a curved titanium frame and a special hinge that changes its resistance during movement. Thanks to this, the mechanism unfolds smoothly and reliably locks the device in a fully flat position. The combination of a titanium body and an adaptive hinge is designed to solve two tasks at once: ensure the durability of the foldable structure and give the user a predictable, 'snapping' opening without any play. ### Steve Lemay on Seamlessness and the Software Foundation Steve Lemay, Vice President of Interface Design, emphasized that Cupertino sought to avoid the feeling that, at the moment of opening, the user is switching to a completely different gadget. In his words, the iPhone Duo's operating system is built on the best work done on the iPad, Macintosh, and previous iPhone models. This approach is meant to make the transition between the regular and foldable modes seamless: the interface, animations, and use cases are structured as a single whole, not as two separate products. ### Bet on Third-Party Developers Among the device's key features, experts highlight the software side and the screen, as well as the combination of thoughtful hardware with seamless animations. Apple expects that precisely the unique form factor, combined with the familiar ecosystem, will inspire third-party developers to create new use scenarios for the iPhone Duo. Thus, the company is betting not only on hardware novelty but also on the wide format becoming a reason for developers to rethink applications for the foldable scenario. ## 🔍 Fact-Check Verification - [A Threat to Android: What Is the Main Feature of the iPhone Duo](https://www.rbc.ua/ukr/news/postavit-pid-zagrozu-android-chomu-golovna-1789979115.html) - Подтверждает необычный форм-фактор и акцент на отличии от конкурентов. - [The iPhone Duo Doesn't Look Like Other Foldable Smartphones: An Unusual Wide-Format Design](https://hi-tech.ua/iphone-duo-ne-pohozh-na-drugie-skladnye-smartfony-neobychnyj-shirokoformatnyj-dizajn/) - Подтверждает широкоформатный дизайн как ключевое отличие. - [iPhone Duo: Apple's New Foldable Smartphone Form Factor](https://novosti.ua/tech/iphone-duo-s-neobychnymi-proportsiyami-glavnaya-fishka-protiv-konkurentov) - Подтверждает новый форм-фактор и пропорции против конкурентов. - [Samsung Galaxy Z Fold 8 vs. iPhone Duo: Design Features and Hardware Trade-offs](https://www.dgl.ru/technique/smartphones/sravnenie-galaxy-z-fold-8-i-iphone-duo.html) - Даёт контекст сравнения дизайна и аппаратных компромиссов с конкурентом. ## ❓ FAQ ### Q: How does the iPhone Duo differ from other foldable smartphones? **A:** It has wide-format proportions instead of the narrow, tall body typical of competitors, and is based on the A-series paper formats. ### Q: Why did Apple choose such proportions? **A:** According to Molly Anderson, the device should feel like a paper notebook: compact when folded and spacious when unfolded, with an unchanged aspect ratio when folded in half. ### Q: What materials and mechanisms are used in the iPhone Duo? **A:** The device features a curved titanium frame and a special hinge that changes its resistance during movement for smooth unfolding and reliable locking in a flat position. ### Q: What is the operating system of the iPhone Duo based on? **A:** According to Steve Lemay, the software is built on the best work done on the iPad, Macintosh, and previous iPhone models, to avoid the feeling of switching to a different gadget when unfolded.