{"id":53142,"date":"2026-09-09T15:38:52","date_gmt":"2026-09-09T19:38:52","guid":{"rendered":"https:\/\/mjtsai.com\/blog\/?p=53142"},"modified":"2026-09-09T15:38:52","modified_gmt":"2026-09-09T19:38:52","slug":"iphone-duo","status":"publish","type":"post","link":"https:\/\/mjtsai.com\/blog\/2026\/09\/09\/iphone-duo\/","title":{"rendered":"iPhone Duo"},"content":{"rendered":"

Apple<\/a> (video<\/a>, MacRumors<\/a>, Hacker News<\/a>, Slashdot<\/a>):<\/p>\n

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Apple today introduced iPhone Duo<\/a>, the first foldable iPhone. Opened, it is the thinnest iPhone ever, with a 7.6-inch inner display that provides a large canvas for viewing content, gaming, and multitasking, and a special nano-texture finish that minimizes glare for an unparalleled viewing experience. Closed, the 5.4-inch outer display delivers 90 percent of the screen area of iPhone 18 Pro in a compact, pocketable design. Both displays share the same aspect ratio, so content scales proportionally, ensuring visual continuity. iPhone Duo is built to last with an innovative hardware design and a precision hinge that offers a smooth, satisfying feel with every use.<\/p>\n

[…]<\/p>\n

The 48MP Fusion Ultra Wide camera — the same as on iPhone 18 Pro models — captures wider fields of view and enables macro photography, while the Center Stage front camera can automatically take photos and videos in any orientation, so users don’t have to rotate iPhone for landscape selfies. Upgraded Photographic Styles with new texture and grain controls let users further dial in their desired appearance and have more creative control over their photos. […] The foldable design with dual displays unlocks camera experiences that are not possible on any other iPhone.<\/p>\n

[…]<\/p>\n

Lock Screen controls, the Dock on the Home Screen, and app navigation and controls now appear on the side to maximize vertical space for content. When iPhone Duo is open, the display shows two Home Screen pages with Today View — a vertically scrolling list of customizable widgets — on the left. The status bar includes a circular, flexible system that nestles into the corner of the screen, showing relevant information like Wi-Fi, cellular strength, battery, and more.<\/p>\n

[…]<\/p>\n

The expansive display supercharges productivity, letting users do more at once with new multitasking capabilities. Split View allows users to open two apps side by side on iPhone for the first time.<\/p>\n

[…]<\/p>\n

iPhone Duo is available in star white and night sky, and starts at $1,999, or $83.29 per month for 24 months, in 256GB, 512GB, 1TB, and 2TB storage capacities.<\/p>\n<\/blockquote>\n\n

I love the idea of the larger screen and how it can be balanced half-folded like a laptop, upside-down, or on the short side. The camera is better than I expected. The price is high enough to make me lose interest but perhaps not unreasonable if it<\/a> can actually replace your iPad. My main concern is that the wide passport-style shape doesn’t look very comfortable<\/a> to hold or keep in your pocket. It’s great that it can unfold, but the compact form factor is how most people will probably hold it most of the time. How well does the side Touch ID work if you’re left-handed?<\/p>\n\n

Ron Elemans<\/a>:<\/p>\n

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The release notes of Xcode 27 RC doesn’t contain the phrase ‘Duo’…<\/p>\n<\/blockquote>\n\n

Apple<\/a>:<\/p>\n

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Learn how to update and optimize your app for the foldable display of iPhone Duo. Discover how to opt in to the full-screen experience, adopt flexible layout best practices, and simulate poses in Device Hub with Xcode. Find out how to use size classes instead of interface orientation, handle asymmetric safe areas, and test Split View multitasking to ensure your app shines in all the ways people use it …<\/p>\n<\/blockquote>\n

Steve Troughton-Smith<\/a>:<\/p>\n

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This is like a whole new platform dropping with a month’s lead time<\/p>\n<\/blockquote>\n\n

Louie Mantia<\/a>:<\/p>\n

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The app design implications alone that are now basically forced onto app developers is nuts. Vision Pro was opt in but… all iPhone apps have to support this new device right? What a nightmare. Ugh, websites? New safe areas?<\/p>\n<\/blockquote>\n\n

Greg Pierce<\/a>:<\/p>\n

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ToolbarItem(placement: .somewhereDepends)<\/pre>\n<\/blockquote>\n\n
Steve Streza<\/a>:<\/p>\n
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As an anecdotal data point, I’ve had my foldable OnePlus Open for over 2 and a half years. It’s fallen on tile and cement, been kicked accidentally, and swatted across a room by my cat. The hinge and screens have no problems.<\/p>\n<\/blockquote>\n\n
Imthaz Ahamed<\/a>:<\/p>\n
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Here’s the list of tech products that have the Duo moniker[…]<\/p>\n<\/blockquote>\n\n
Previously:<\/p>\n