iPhone Duo: Everything announced about the first foldable iPhone
Apple
The idea behind a foldable iPhone 0:00
Apple opens by describing the concept of an intelligent personal hub, saying no product is better suited to be that hub than iPhone. A larger display, they explain, opens new possibilities for content, memories, Siri, Apple Intelligence, and apps, while the device still needs to fit in your pocket and your hand. They argue that other foldables feel like two phones awkwardly stuck together, with square screens that make scrolling feel compromised and movies boxed in by black bars. Apple says it started with the experience it wanted for itself, one that feels as natural as iPad, and combined that with engineering to arrive at the new device, called iPhone Duo.
Design and hinge engineering 2:02
Molly and Steve describe iPhone Duo as similar in size to a passport, comfortable to hold with one hand, with an asymmetric shape and two rounded corners that invite you to open it. The two sides form a continuous frame around the largest iPhone display ever made, with a narrow uniform border inspired by iPad. Both displays share the same aspect ratio for a fluid transition between open and closed. The FaceTime camera sits hidden behind the display, and a custom hinge with a variable torque profile controls opening and closing smoothly, aided by a magnet array for closure. When open it is Apple's thinnest iPhone ever, with a titanium frame machined and polished to a mirror finish.
Software built around the fold 4:31
With iOS 27, Liquid Glass adapts controls to the side of the screen, freeing vertical space and keeping controls within thumb's reach. The Dock becomes vertical, and the status bar nestles into a corner. Software expands gracefully as you move from the outer to the inner display, and iOS gains new flexibility, letting you view two Home Screen pages, check inbox and messages together, or open two apps side by side. The system also reorients automatically when you fold, tilt, or flip the device.
Displays, Touch ID, and build 6:35
The inner Super Retina XDR display measures 7.6 inches, fifty percent larger than iPhone 18 Pro Max and eighty percent larger than iPhone 18 Pro, while the outer display is 5.4 inches, ninety percent the screen area of iPhone 18 Pro. Apple Pencil with USB-C will work on either display later this year. Touch ID is built into the side button under your thumb, with support for multiple enrolled fingers and Apple Watch unlocking. The phone comes in Star White and Night Sky, built from Grade 5 titanium with support ribs and ceramic fiber reinforced antenna splits, plus Ceramic Shield front and back and IP68 water resistance.
Multitasking and everyday features 9:02
Craig explains that Split View lets you run two apps side by side or two windows of the same app, with a tap on the divider to pair them for later. Video can be pinned to the top of the screen while multitasking below. Sensors let iOS adapt to any angle, including hands-free viewing on a table, and speaker tuning adjusts for different poses. Partially folding the device slides content away from the crease. StandBy has been reimagined with new faces, widgets, and a bedside clock mode with a gentle wake-up glow. Apps like Zoom, Slack, Notion-style tool Detail, and Netflix are being updated to use the larger canvas.
Display engineering and chip 12:31
Johny describes a custom nano-texture finish made through maskless laser lithography to reduce glare and minimize crease visibility while feeling premium. A multilayer lamination system with viscoelastic adhesives lets layers glide like pages in a book, supported by a titanium plate and a hinge built from over 100 precision parts, each matched by AI during manufacturing. The A20 Pro chip drives both displays, delivering up to thirty-five percent higher sustained performance than iPhone 17 Pro, paired with the C2 modem offering fifty percent faster uploads than C1X and fifteen percent less energy use.
Battery life and charging 17:01
Two batteries, one on each side, are managed by custom silicon so they work as one system. Video playback reaches up to thirty-one hours on the inner display, forty-four hours on the outer display, and twenty-four hours using both screens equally. Fast charging reaches fifty percent in about twenty minutes, giving five hours of outer-display playback from just five minutes of charging.
Camera system and creative features 18:01
The Fusion Main camera captures fine detail with zero shutter lag, and the 2x optical-quality Telephoto adds texture and closeness. Low light performance benefits from a large sensor and stabilization, and 4K 120 video enables slow motion. The Ultra Wide camera matches the one in iPhone 18 Pro, and Photographic Styles now include texture and grain control. The device supports Dual Capture and Duo FaceTime, letting a second person join a call on the outer display. Duo Preview lets a subject see and frame themselves, Kid Cue draws children's attention for smiles, and Smart Take automatically captures a photo once everyone is posed.
Accessories, pricing, and availability 21:31
Apple introduces the Duo Folio with an integrated kickstand and a two-part Duo case for drop protection. iPhone Duo starts at 1999 dollars with storage from 256GB to 2TB, alongside trade-in offers. Pre-orders begin October 16, with availability on October 23. Apple closes by calling it the most transformational iPhone experience since the original, crediting the creativity and collaboration of teams across the company.
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