Apple's iPhone Duo: release date, price, specs, and must-know features
iPhone Duo. | Image by Apple
What's new with the iPhone Duo:
- First foldable iPhone, in a wide book-style form factor
- 7.6-inch inner display and 5.4-inch outer display – both Super Retina XDR with ProMotion and Always On
- Nano-texture finish on the inner display for minimal glare and near-invisible crease
- Thinnest iPhone ever made
- Grade 5 titanium frame with mirror-polished finish
- FaceTime camera hidden under the inner display
- Variable torque hinge with magnet array closure, over 100 components
- Side-mounted Touch ID – also unlockable with Apple Watch
- A20 Pro chip with a new display engine driving both screens
- Up to 44 hours battery life on the outer display, up to 31 hours on the inner display
- 48MP Fusion main camera and 48MP Fusion ultra-wide camera
- 12MP 2x optical telephoto via the main camera
- iOS 27 with foldable-specific optimizations and Siri AI
- Two colors: Star White and Night Sky
- Announced September 9, 2026. Pre-orders open October 16, available October 23.
- iPhone Duo starts at $1,999, or $83.29 per month for 24 months.
iPhone Duo release date
Apple announced the iPhone Duo on Wednesday, September 9, 2026, at Apple Park in Cupertino, California.
| Foldable | Release date |
|---|---|
| iPhone Duo | September 9, 2026 |
| Samsung Galaxy Fold | February 2019 |
| Huawei Mate X2 | February 2021 |
| Honor Magic V | January 2022 |
| Xiaomi Mix Fold | March 2021 |
| Oppo Find N | December 2021 |
| Vivo X Fold | April 2022 |
Pre-orders open on Friday, October 16, with availability beginning Friday, October 23.
iPhone Duo price
The iPhone Duo starts at $1,999 and it is available in 256 GB of starting storage and up to 2 TB.
| Model | Starting price |
|---|---|
| iPhone Duo | $1,999 |
| Galaxy Z Fold 8 (wide model) | $1,899 |
| Galaxy Z Fold 8 Ultra (Z Fold 7 direct successor) | $2,099 |
| Samsung Galaxy Z Fold 7 | $1,999 |
| Google Pixel 10 Pro Fold | $1,799 |
iPhone Duo design
The iPhone Duo is the thinnest iPhone Apple has ever made. Its wide book-style form is roughly the size of a passport when folded – compact enough to use comfortably in one hand, and opening out into a large-screen experience closer to a small tablet. Both the inner and outer displays share the same aspect ratio, so content scales proportionally for a smooth experience.
iPhone Duo in folded form. | Image by Apple
The enclosure is crafted from grade 5 titanium, precision-machined to a mirror-polished finish. The 3D-printed hinge cover has a contrasting micro-blasted finish. Ceramic Shield protects the back, with Ceramic Shield 2 on the front. The iPhone Duo carries an IP68 rating for splash, water, and dust resistance, which is quite fancy for a first-generation foldable.
Hinge
The hinge is engineered from over 100 components, with carbon fiber support plates creating a stiff, lightweight platform for the display to rest on.
A variable torque profile delivers controlled opening. An integrated magnet array provides a secure snap when closing. The hinge also supports the center of the display to hold it flat when open.
MagSafe
Colors
The iPhone Duo launches in two finishes: Star White and Night Sky, a dark blue.
Authentication
Touch ID is integrated into the side button for secure, consistent authentication whether the device is open or closed. The iPhone Duo can also be unlocked with Apple Watch.
Camera Control
The iPhone Duo includes a Camera Control button for quickly launching the camera, including the new Siri Camera mode, which lets Siri see what you see to answer questions and take action.
Audio
Speakers on the top and bottom deliver immersive spatial audio.
iPhone Duo display
iPhone Duo. | Image by Apple
Foldable iPhone displays sizes:
- 7.6-inch inner screen
- 5.4-inch outer screen
Both displays are Super Retina XDR panels with ProMotion adaptive refresh and Always On. Apple says that the inner display is 50% larger than the iPhone 18 Pro Max's screen.
The inner display features a premium nano-texture finish that reduces glare and reflections, minimizes crease visibility, and feels smooth to the touch.
A FaceTime camera sits discreetly beneath the inner display, staying hidden when not in use to keep the screen uninterrupted.
Apple Pencil support via USB-C is coming to both displays later this year.
iPhone Duo camera
iPhone Duo camera specs:
- Main camera: 48MP Fusion with large sensor, fast aperture, sensor-shift OIS, and optical-quality 2x telephoto
- Ultra-wide camera: 48MP Fusion – same as on iPhone 18 Pro models
- Inner display: FaceTime camera hidden under the display
- Outer display: Center Stage front camera
The ultra-wide camera is the same unit as on the iPhone 18 Pro models and supports macro photography. The Center Stage front camera automatically adjusts the field of view and rotates the frame to keep subjects included as they move.
The FaceTime camera sits beneath the inner display and activates when needed, keeping the screen surface uninterrupted. Dual Capture in FaceTime transmits both the front and rear camera feeds simultaneously. Duo FaceTime lets a second person join a call using the outer display and its camera.
Foldable-exclusive camera features
- Smart Take: On-device AI monitors the scene and captures photos automatically when subjects are posing.
- Duo Preview: Displays a live preview on the outer display so subjects can check framing while the rear cameras are in use.
- Kid Cue: Plays animations on the outer display to direct children's attention toward the camera.
- Rear camera selfies: The rear cameras can be used for selfies with a live preview shown on the outer display.
Audio Mix includes updated algorithms for voice clarity and music isolation. The device can stand on its own without a tripod for hands-free recording.
iPhone Duo storage
The iPhone Duo starts at 256GB and goes up to 2TB – the same tier structure as the iPhone 18 Pro Max.
iPhone Duo battery
The iPhone Duo uses a dual-battery architecture, with one cell on each side of the device. Apple's energy rebalancing algorithms manage both cells as a single unit, so there's no manual switching between them.
Battery life figures break down by which display you're using:
- Up to 44 hours of video playback on the outer display
- Up to 31 hours of video playback on the inner display
- Up to 24 hours per charge when both displays see roughly equal use
Those outer display numbers put the iPhone Duo ahead of the iPhone 18 Pro Max's 45-hour figure in everyday mixed use – though keep in mind the inner display will be where most of the heavy lifting happens.
Wired charging hits 50% in around 20 minutes. Wireless charging via MagSafe or Qi2 reaches the same mark in around 30 minutes.
The iPhone Duo is eSIM-only worldwide – the space freed up by removing the physical SIM tray goes toward battery capacity.
iPhone Duo features and software
Multitaksing on the iPad Duo. | Image by Apple
The iPhone Duo runs iOS 27, which has been reworked throughout to fit the foldable form factor without abandoning the familiar iPhone layout.
Controls, the Dock, and app navigation shift to the side of the display to free up vertical space for content. When you open the device, the inner display shows two Home Screen pages at once, with Today View – a vertically scrolling panel of widgets – on the left.
The status bar tucks into the corner in a compact circular format. The Dynamic Island runs vertically along the side of both displays and expands to surface Live Activities and alerts. The interface adjusts automatically as you fold, unfold, or rotate the device.
Split View brings two-app side-by-side multitasking. You can also open two windows of the same app – two Safari tabs side by side, for instance – save app pairs to return to later, and run Siri AI on one half of the screen while another app is open on the other.
Siri AI can draw on personal context across your apps – messages, emails, photos – read what's on your screen, and handle multi-step tasks across apps. A dedicated Siri app stores conversation history and syncs it across your Apple devices via iCloud. On the iPhone Duo specifically, Siri AI can run on one half of the inner display while you work in another app on the other side.
Apple Intelligence is integrated into most core apps. Photos gets Spatial Reframing, Extend, and an updated Clean Up.
Image Playground can now generate photorealistic images. Safari adds Notify Me, which tracks web pages for changes like price drops or product restocks. Processing happens on-device where possible; tasks that need more compute go to Private Cloud Compute, which Apple itself cannot access. The iPhone Duo also supports SynthID for identifying AI-generated or AI-edited images.
Netflix, Zoom, and Slack have already released versions optimized for the iPhone Duo's displays and folding design.
iPhone Duo hardware and specs
iPhone Duo specs:
- CPU: Apple's A20 Pro (2nm)
- Storage: 256GB / 512GB / 1TB / 2TB
- Cameras: 48MP Fusion main with 2x optical telephoto, 48MP Fusion ultra-wide with macro, under-display FaceTime camera, Center Stage front camera
- Connectivity: Apple C2 modem, N1 wireless chip (Wi-Fi 7, Bluetooth 6, Thread), eSIM-only worldwide
- Authentication: Side-mounted Touch ID, Apple Watch unlock
- Rating: IP68
- Colors: Star White, Night Sky
The iPhone Duo runs on the same A20 Pro chip as the iPhone 18 Pro and Pro Max. A new chip package connects it directly to a custom vapor chamber, resulting in up to 35% better sustained performance than the iPhone 17 Pro. A dedicated display engine handles both the inner and outer displays simultaneously.
The 6-core CPU runs up to 20% faster than the A19 Pro. The 7-core GPU is up to 40% faster. The Dual 16-core Neural Engine – 32 cores total – doubles the on-device AI compute capacity of the A19 Pro. Memory bandwidth is 50% higher than the A19 Pro. The chip is built on TSMC's 2nm process.
The iPhone Duo also comes with the C2 chip, which, according to Apple, brings around 50% faster speeds than the C1X, adds mmWave 5G support in the US, and uses 15% less energy. The N1 chip handles Wi-Fi 7, Bluetooth 6, and Thread.
Foldable iPhone Duo comparisons
- Apple iPhone Duo vs Samsung Galaxy Z Fold 8: Here's how the newly-announced Galaxy Z Fold 8 compares to what's expected from the foldable iPhone.
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