Apple's iPhone Duo: release date, price, specs, and must-know features
iPhone Duo. | Image by Apple
What's new with the iPhone Duo:
- Apple's 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 a near-invisible crease
- Thinnest iPhone ever made so far
- Grade 5 titanium frame with a mirror-polished finish
- FaceTime camera beneath the inner display
- Variable torque hinge with magnet array closure, assembled from over 100 components
- Side-mounted Touch ID, the Duo is also unlockable with Apple Watch
- A20 Pro chip with a dedicated display engine driving both screens simultaneously
- 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
- The iPhone Duo was announced on September 9, 2026. The phone's pre-orders opened on October 16, 2026.
- The iPhone Duo starts at $1,999, or $83.29 per month for 24 months.
Jump to:
iPhone Duo release date
Apple announced its first foldable iPhone, the iPhone Duo, on September 9, 2026, alongside the iPhone 18 Pro Max and Pro, as well as the new Apple Watch Series 12 and the Apple Watch Ultra 4.
| 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 opened on Friday, October 16, with availability beginning Friday, October 23.
iPhone Duo price
The iPhone Duo starts at $1,999. The starting storage for the model is 256 GB, and it goes all the way up to 2 TB of storage.
| 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 Apple's first foldable phone, in a book-style form factor, roughly the size of a passport. It's also the thinnest iPhone Apple has made up to date.
Opening the phone, you're greeted by a large screen with an iPad-like aspect ratio. Actually, both the inner and outer displays have the same aspect ratio, so content scales proportionally when you switch displays.
iPhone Duo in folded form. | Image by Apple
The enclosure is grade 5 titanium, precision-machined to a mirror-polished finish.
For protection, the phone sports Ceramic Shield on the back and Ceramic Shield 2 on the front. It comes with an IP68 rating (explained here) for water and dust resistance, which is a good achievement for a first-generation foldable.
Hinge
According to Apple, the iPhone Duo's hinge is made up from over 100 components, with carbon fiber support plates for a platform for the display.
The hinge also features a variable torque profile for controlled resistance when opening. There's an integrated magnet array to give you a secure snap when you're closing the phone.
MagSafe
Colors
The iPhone Duo launches in two finishes: Star White and Night Sky, which is a deep dark blue.
Authentication
For authentication, the iPhone Duo uses Touch ID built into the side button. On top of that, you can use your Apple Watch to unlock the iPhone Duo for convenience.
Camera Control
The iPhone Duo comes with a Camera Control button for quickly launching the camera, including the new Siri Camera mode. The Siri Camera mode lets Siri see what you're looking at 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 on the iPhone Duo are Super Retina XDR with ProMotion adaptive refresh and Always On. During the phone's announcement, Apple highlighted that the inner display is 50% larger than the iPhone 18 Pro Max's screen.
Speaking of the inner display, it has a premium nano-texture finish that offers reduced reflections and glare and minimal crease visibility. The new finish also gives a smooth feeling when you're touching it.
Underneath the inner display is the FaceTime camera.
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 main camera offers up to 48 MP photos, with 24 MP images by default. It also features a 2x optical telephoto built in, while the ultra-wide has a macro mode.
The Center Stage front camera automatically adjusts its field of view and rotates the frame to keep subjects in the shot as they move. The FaceTime camera beneath the inner display activates when needed, keeping the screen surface undisturbed.
The iPhone Duo supports Dual Capture in FaceTime, which sends both 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.
Cinematic effects can be applied post-capture to videos shot at up to 60fps. Time-lapse records in 4K Dolby Vision HDR. 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. Photographic Styles includes texture and grain controls.
iPhone Duo storage
The iPhone Duo starts at 256GB and goes all the way up to 2TB – the same tier structure as the iPhone 18 Pro Max.
iPhone Duo battery
The iPhone Duo features a dual-battery architecture with one cell on each side of the device. Both batteries are managed using Apple's energy rebalancing algorithms automatically.
Battery life figures break down by which display you're using, according to Apple*:
- 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 Duo ahead of the iPhone 18 Pro Max's 45-hour figure in everyday mixed use – though the inner display will handle most of the heavy lifting for most users.
As for charging, you can get around 50% of a charge in 20 minutes with wired charging. Using MagSafe, you can reach 50% in around 30 minutes.
The iPhone Duo is eSIM-only worldwide – the space previously occupied by the physical SIM tray goes toward battery capacity.
*Keep in mind that Apple doesn't publish battery capacities in mAh. Once we've tested the iPhone Duo, we'll update this section with results from our own testing to give you a realistic idea of how the battery performs.
iPhone Duo features and software
Multitaksing on the iPad Duo. | Image by Apple
The iPhone Duo comes with iOS 27 out of the box. The OS is redesigned for the foldable form factor without abandoning the familiar iPhone layout.
Controls, the Dock, and app navigation are now to the side of the display, which frees up vertical space for content. When you unfold the device, the inner display shows two Home Screen pages at once, with Today View – a vertically scrolling panel of widgets – on the left.
Meanwhile, the status bar is tucked into the corner in a compact circular format. The Dynamic Island is present as well, surfacing Life Activities and alerts as it would on a regular iPhone. However here, the Dynamic Island adjusts automatically as you fold, unfold, or rotate the phone.
Split View brings two-app side-by-side multitasking to iPhone for the first time. You can open two windows of the same app simultaneously – 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.
Meanwhile, iOS 27 also brings the long-awaited Siri revamp. The assistant now takes advantage of AI and is called Siri AI, capable of using personal context, reading what's on your screen, and taking actions in apps on your behalf.
There's also a dedicated Siri AI app where you can access previous conversations or continue working on another Apple device.
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.
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 is powered by 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, delivering up to 35% better sustained performance than the iPhone 17 Pro. A dedicated display engine handles both the inner and outer screens 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 in total – doubles the on-device AI compute of the A19 Pro. Memory bandwidth is 50% higher than the A19 Pro. Everything is built on TSMC's 2nm process.
The C2 modem delivers around 50% faster speeds than the C1X, adds mmWave 5G support in the US, and draws 15% less energy. The N1 chip handles Wi-Fi 7, Bluetooth 6, and Thread.
iPhone Duo comparisons to competitors
- Apple iPhone Duo vs Samsung Galaxy Z Fold 8: here's how the newly-announced Galaxy Z Fold 8 compares to Apple's first foldable iPhone.
- Apple iPhone Duo vs Google Pixel 11 Pro Fold: the key differences between the newly-announced iPhone Duo and Google's Pixel 11 Pro Fold.
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