Apple iPhone Duo

Overview

Apple iPhone Duo is Apple’s first foldable iPhone and the company’s biggest change to the physical iPhone format in years. Closed, it uses a compact 5.4-inch outer Super Retina XDR display; opened, a 7.6-inch folding OLED becomes the main workspace. Both panels support ProMotion and Always-On functionality, while the inner screen uses a nano-texture finish designed to reduce reflections and make the fold line less visually distracting.

The hardware is built around A20 Pro, a custom vapor chamber and a dual-battery architecture. Apple uses grade 5 titanium for the foldable enclosure, integrates Touch ID into the side button, and retains IP68 resistance. The 48MP Main and 48MP Ultra Wide cameras are complemented by fold-specific shooting modes such as rear-camera selfies using the outer display as a preview. iOS 27 has also been reworked for the larger canvas, adding two-app Split View, saved app pairs, flexible window behavior and interfaces that respond to the hinge angle. Apple Pencil (USB-C) support is planned for the inner and outer displays.

Because iPhone Duo does not reach general availability until October 23, this page should be treated as a verified specifications overview rather than a final ownership verdict. Early independent hands-on reports have praised the smooth hinge, polished transitions between screens and reduced crease visibility, while also noting that the crease can still be seen at some angles. The $1,999 starting price, 254g weight and first-generation foldable status make it a specialist purchase. Its appeal is strongest for buyers who want iOS in a phone-tablet form factor and are comfortable paying a substantial premium for Apple’s first attempt.

Full Specifications

Launch & Software

Announcement Date	2026-09-09
Release / Launch Date	2026-10-23
Operating System	iOS
UI / Software Version	iOS 27
Model Numbers	A3447 \| A3719

Network

Technology	2G, 3G, 4G, 5G
2G Bands	GSM/EDGE 850 \| 900 \| 1800 \| 1900 MHz
3G Bands	UMTS/HSPA+ 850 \| 900 \| 1700/2100 \| 1900 \| 2100 MHz
4G Bands	FDD-LTE + TDD-LTE; regional band support varies by model
5G Bands	5G NR sub-6 GHz; mmWave on US model A3447; 4x4 MIMO
Network Speed	5G NR; Gigabit LTE
SIM	Dual eSIM only; two active eSIMs; stores eight or more eSIMs; no physical SIM

Body & Design

Dimensions	Open: 117.8 × 164.6 × 5.2 mm \| Folded: 117.8 × 84.1 × 11.3 mm
Weight	254 g
Build	Titanium foldable design; precision hinge; Ceramic Shield 2 front; Ceramic Shield back
Front Protection	Ceramic Shield 2
Back Protection	Ceramic Shield back
Frame Material	Titanium
Protection / Resistance	IP68 (maximum depth 6 m up to 30 minutes)
Colors	Night Sky \| Star White

Display

Display Type	Inner: 7.6-inch Super Retina XDR folding OLED with nano-texture \| Outer: 5.4-inch Super Retina XDR OLED; both ProMotion/Always-On/Dynamic Island
Screen Size	7.6 inches
Resolution	Inner: 1878 × 2670 at 430 ppi \| Outer: 1398 × 2034 at 460 ppi
Refresh Rate	120 Hz
HDR / Display Features	HDR; Dolby Vision; HDR10+/HDR10; HLG
Protection	Ceramic Shield 2 front; anti-reflective coatings; inner nano-texture finish

Platform & Memory

Chipset	Apple A20 Pro (2nm)
CPU	6-core CPU: 2 super cores + 4 efficiency cores
GPU	7-core GPU with Neural Accelerators; hardware-accelerated ray tracing
Storage Options	256GB \| 512GB \| 1TB \| 2TB
Memory Card	No

Cameras

Main Camera	48MP Fusion Main, 26 mm, f/1.6, sensor-shift OIS
Ultrawide Camera	48MP Fusion Ultra Wide, 13 mm, f/2.2, 120° FOV
Telephoto / Periscope	12MP optical-quality 2x Telephoto crop, 52 mm, f/1.6
Optical Zoom	0.5x \| 1x \| 2x optical-quality; 4x optical-quality zoom range
Digital Zoom	Up to 10x
Flash	True Tone flash
Macro / Additional Camera	48MP macro photography via Fusion Ultra Wide
Main Camera Features	Smart Take; Duo Preview; Smart HDR 5; Photonic Engine; Deep Fusion; Night mode; Photographic Styles 3
Main Camera Video	4K Dolby Vision up to 60 fps; 4K Dolby Vision slo-mo up to 120 fps on Fusion Main; Dual Capture up to 4K30
Selfie Camera	Outer: 12MP Center Stage f/2.2 \| Inner: under-display FaceTime camera f/1.8
Selfie Features	Outer: Center Stage, Smart Take, Kid Cue, portraits \| Inner: under-display FaceTime, Center Stage
Selfie Video	Outer: 4K Dolby Vision up to 60 fps \| Inner: 1080p at 30/60 fps

Sound

Loudspeaker	Built-in stereo speakers
3.5mm Jack	No
Audio Features	Spatial Audio; Dolby Atmos; stereo recording; Audio Mix

Battery & Charging

Battery Type	Dual built-in rechargeable lithium-ion batteries
Wired Charging	Fast charge: up to 50% in around 20 min with 60W-capable adapter or higher
Wireless Charging	MagSafe up to 25W; Qi2 up to 25W
Charging Notes / Charging Time	Apple-rated typical use up to 24h; video playback up to 44h outer / 31h inner. Battery mAh is not published by Apple, so battery_capacity is intentionally blank.
Removable	No

Connectivity

Wi-Fi	Wi-Fi 7 (802.11be) with 2x2 MIMO; Thread
Bluetooth	Bluetooth 6
Positioning	Precision dual-frequency GPS; GLONASS; Galileo; QZSS; BeiDou; NavIC
NFC	Yes
Infrared	No
Radio	No FM radio
USB	USB Type-C
USB / Port	USB-C; USB 3 up to 10 Gb/s; DisplayPort
UWB	Apple second-generation Ultra Wideband

Sensors & Features

Fingerprint	Touch ID in side button
Face Unlock	No Face ID; Touch ID is primary biometric
Accelerometer	High-g accelerometer
Gyroscope	High dynamic range gyro
Compass	Digital compass
Proximity	Proximity sensor
Stylus / Special Hardware	Precision folding hinge; Apple Pencil (USB-C) support; Camera Control
Biometric Security	Touch ID
Speakers / Audio	Stereo speakers; Spatial Audio; Dolby Atmos
Other Features	Apple's first foldable iPhone; Apple Intelligence and Siri AI; Apple C2 modem; vapor chamber; RAM not manufacturer-confirmed as of 2026-09-22 and intentionally left blank.

Pros & Cons

Pros

Polished first-generation foldable design
7.6-inch 120Hz inner display
Useful 5.4-inch outer display
A20 Pro performance
Fold-aware iOS 27 multitasking
IP68 protection
Clever camera preview modes

Cons

$1,999 starting price
254g weight
First-generation durability questions
No long-term battery data yet
Less camera zoom than iPhone 18 Pro
App optimization still developing

Alternatives

Frequently Asked Questions

When is the iPhone Duo available?

Apple says pre-orders begin October 16, 2026, with availability beginning October 23 in the first group of markets.

Does the iPhone Duo completely remove the display crease?

No. Early hands-on reports say the crease is less noticeable and difficult to feel, helped by the nano-texture inner surface, but it can still be visible at some angles and in some lighting.

Should I buy the iPhone Duo at launch?

It is best treated as an early-adopter product until independent long-term battery, hinge, inner-screen and repairability evidence becomes available.

PhonicSpecs Review

Apple iPhone Duo Review Preview: A Polished First Foldable With a $1,999 Question

Apple’s first foldable combines a 5.4-inch outer screen, 7.6-inch inner display, A20 Pro and an iOS 27 multitasking redesign, but its $1,999 price and pre-release status make a final verdict premature.

Read review →

Our verdict

The iPhone Duo appears remarkably polished for a first-generation foldable, especially in its hinge, display transitions and fold-aware software. A final score should wait for post-launch battery, durability and camera testing.

Buying advice

Consider the iPhone Duo only if you genuinely want an iOS phone-tablet hybrid and are comfortable with first-generation pricing. Keep this review as a preview until long-term independent testing is available after the October 23 launch.

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