iPhone Duo Specs: Complete Specifications, Features and Dimensions

Apple's move into the foldable smartphone category brings a different way to experience an iPhone. The iPhone Duo combines a compact outer display with a larger folding screen, giving you more room to work, watch content, and use your favourite apps.

Its design brings together two displays, a folding hinge and powerful internal hardware. Whether you're interested in its screen quality, camera capabilities, processing power or overall dimensions, understanding the specifications can help you decide if it suits your needs. In this guide, our Apple experts at iSTYLE UAE take a closer look at the iPhone Duo specs, explore its main features, and explain what its dimensions and hardware mean for everyday use.

iPhone Duo Dimensions and Weight: How Portable Is Apple's Foldable?

The Foldable iPhone measures 117.8 mm in height, 164.6 mm in width, and 5.2 mm in depth when unfolded. When folded, it measures 117.8 mm × 84.1 mm × 11.3 mm. It weighs 254 grams and features a titanium frame with a folding hinge. These dimensions give the iPhone Duo two different form factors, depending on how you use it. When folded, the device has a compact shape that is easier to carry in a pocket or small bag. Its outer screen also lets you handle everyday tasks, such as checking messages, answering calls, and viewing notifications, without opening the phone. 

Unfolding it reveals a larger display with a slim 5.2 mm profile. This gives you more screen space for reading documents, watching videos, and working across multiple apps. The titanium frame is designed to provide strength while keeping the overall structure relatively lightweight. The hinge connects both halves and allows the device to move between folded and unfolded positions. At 254 grams, the iPhone Duo is heavier than many conventional smartphones, so its weight is worth considering if you prefer a particularly lightweight device.

Dual Super Retina XDR Displays: Outer Cover Screen vs. Inner Canvas

The iPhone Duo features two Super Retina XDR OLED displays. The outer screen measures 5.4 inches, while the larger inner folding display measures 7.6 inches. Both support LTPO ProMotion technology, with adaptive refresh rates ranging from 1Hz to 120Hz. The two screens serve different purposes, giving you the flexibility to use the phone in a compact or expanded format.

The 5.4-inch Cover Screen

The 5.4-inch outer display is designed for everyday interactions when the phone is folded. It features Ceramic Shield 2 protection and supports features such as Dynamic Island and Always-On display. With a typical brightness of 1,000 nits and a stated outdoor peak brightness of up to 3,000 nits, the screen is designed to remain easy to view in different lighting conditions. You can use it to:

• Check notifications and messages.
• Answer calls and manage emails.
• View maps and directions.
• Access apps without unfolding the phone.

The 7.6-inch Folding Display

The 7.6-inch inner display gives you a larger viewing area for activities that benefit from more screen space. Whether you're watching videos, reading documents, browsing websites or using multiple apps, the expanded display offers more room to work with. The screen uses Ultra-Thin Glass (UTG) with a protective top layer designed to support repeated folding. Its stated resolution of 2670 × 1878 pixels delivers detailed visuals, while the OLED panel supports rich colours and contrast.

Apple Pencil Support

The inner display is also stated to support Apple Pencil (USB-C). This could make tasks such as annotating PDFs, marking up presentations, and sketching ideas more convenient on the larger screen. Compatibility and supported features should be checked before choosing an Apple Pencil for the device.

Processing Power: A20 Pro Chip, 12GB RAM and Thermal Architecture

The iPhone Duo is powered by Apple's A20 Pro chip, built using a 2-nanometre manufacturing process. Its stated configuration includes a 6-core CPU, a 7-core GPU, and 12GB of LPDDR5X memory. The larger folding display makes multitasking an important part of the experience. You may want to keep a document open while browsing the web, switch between apps or edit photos without repeatedly waiting for them to reload. The A20 Pro chip is designed to support these demanding tasks.

Advanced Multitasking

With 12GB of memory, the iPhone Duo is designed to handle multiple active apps and support a more flexible multitasking experience. The larger screen also gives you more room to view content side by side, making it useful when comparing documents, checking information, or moving between different tasks.

Neural Engine and Apple Intelligence

The stated dual 16-core Neural Engine supports on-device machine learning tasks and Apple Intelligence features. These capabilities can help with everyday activities such as summarising information, working with images and using supported intelligent features within iOS. The availability of individual Apple Intelligence features may depend on the software version, language and region.

Vapour Chamber Cooling

The iPhone Duo is also described as featuring a split vapour chamber cooling system. Cooling is important when running demanding applications for extended periods, such as gaming, video editing or exporting large files. A vapour chamber helps distribute heat across the device, supporting more consistent performance during intensive use.

Camera System: 48MP Dual Fusion Optics with Foldable Versatility

The iPhone Duo features a dual rear camera system consisting of a 48MP Fusion Main camera and a 48MP Fusion Ultra Wide camera. It also includes a 12MP Center Stage camera on the outer display and an under-display camera on the inner screen. The folding design adds flexibility to the photography experience, giving you more ways to frame and capture photos.

48MP Fusion Main Camera

The 48MP Fusion Main camera is designed for everyday photography, from portraits and landscapes to indoor shots and low-light scenes. Its stated specifications include a 26mm focal length, an f/1.6 aperture, and sensor-shift optical image stabilisation (OIS). The high-resolution sensor also supports a 2x optical-quality crop, giving you another framing option without needing a dedicated telephoto lens.

48MP Fusion Ultra Wide Camera with Macro

The 48MP Ultra Wide camera offers a 120-degree field of view, making it useful for capturing landscapes, architecture, and group photos. It also supports macro photography, allowing you to get closer to smaller subjects and capture details that may be difficult to photograph with the main camera.

Duo Preview

One of the useful features of a foldable phone is the ability to use its outer screen while taking photos with the rear cameras. With Duo Preview, people in front of the camera can see themselves on the cover display while you frame the shot. It also gives you the flexibility to use the higher-resolution rear cameras for selfies.

Video Recording Features

The iPhone Duo's stated video capabilities include 4K Dolby Vision recording at up to 120 fps, along with Dual Capture and Action Mode. These features give you more flexibility when recording videos, whether you're capturing everyday moments, creating content, or filming while moving.

Camera Control

The dedicated Camera Control interface on the titanium side rail is designed to make camera adjustments easier. Depending on the supported controls, you can use it to adjust settings such as zoom, exposure and Photographic Styles without navigating through multiple menus.

Battery Capacity, Fast Charging and Connectivity

The iPhone Duo is listed with a 4,883 mAh dual-cell battery, split between two cells with capacities of 2,962 mAh and 1,921 mAh. Its stated charging specifications include up to 60W wired charging through USB-C and up to 25W wireless charging through MagSafe and Qi2. The dual-cell battery design distributes power across both sides of the device. This arrangement supports the requirements of its folding form factor.

The stated video playback figures are up to 44 hours using the outer display and up to 31 hours using the inner display. Actual battery life will vary depending on how you use the phone, including screen brightness, connectivity, apps, and other settings.

Fast Charging

The iPhone Duo supports wired charging through USB-C, with a stated maximum charging rate of up to 60W. It also supports wireless charging through MagSafe and Qi2 at up to 25W. These options give you flexibility when charging at home, at work, or while travelling. Actual charging speeds can vary depending on the adapter, cable, charging accessories, and battery conditions.

Connectivity Features

The iPhone Duo includes several connectivity options designed to support fast data transfer, wireless networking, and accessory connections.

• Wi-Fi 7: Supports faster wireless networking and improved performance on compatible networks.
• Bluetooth 6: Supports wireless connections with compatible headphones, speakers, and other accessories.
• Thread: Provides connectivity for compatible smart home devices.
• USB-C 3.2 Gen 2: Supports wired charging and data transfer, with stated transfer speeds of up to 10Gbps.
• Dual eSIM: Supports digital SIM profiles, making it easier to manage personal, work, and international mobile connections.

The device is also listed with Apple's C2 5G modem and N1 wireless chip.

Complete iPhone Duo Specs at a Glance

Here's a quick overview of the iPhone Duo's listed hardware and technical specifications.

Hardware Category	iPhone Duo Specifications
Processor	Apple A20 Pro (2nm)
CPU	6-core CPU
GPU	7-core GPU
Memory	12GB LPDDR5X
Neural Engine	Dual 16-core Neural Engine
Storage Options	256GB, 512GB, 1TB, 2TB
Outer Display	5.4-inch Super Retina XDR OLED
Outer Display Resolution	2034 × 1398 pixels, 460 ppi
Inner Display	7.6-inch Super Retina XDR Folding OLED
Inner Display Resolution	2670 × 1878 pixels, 430 ppi
Refresh Rate	1Hz–120Hz LTPO ProMotion
Display Brightness	1,000 nits typical, 1,600 nits HDR peak, 3,000 nits outdoor peak
Stylus Compatibility	Apple Pencil (USB-C), inner display
Main Rear Camera	48MP Fusion, 26mm, f/1.6, sensor-shift OIS
Ultra Wide Camera	48MP Fusion, 13mm, f/2.2, 120° field of view
Front Cameras	12MP Center Stage (cover) and under-display camera (inner screen)
Video Recording	Up to 4K Dolby Vision at 120 fps
Folded Dimensions	117.8 × 84.1 × 11.3 mm
Unfolded Dimensions	117.8 × 164.6 × 5.2 mm
Weight	254 grams
Chassis	Grade 5 Titanium frame
Battery	4,883 mAh dual-cell
Wired Charging	Up to 60W USB-C
Wireless Charging	Up to 25W MagSafe / Qi2
Biometric Security	Touch ID integrated into the side power button
Water and Dust Resistance	IP68
Connectivity	Apple C2 5G modem, N1 chip, Wi-Fi 7, Bluetooth 6, Thread
USB-C Data Transfer	Up to 10Gbps

Explore the iPhone Duo at iSTYLE UAE

Specifications can tell you a lot about a smartphone, but experiencing the device in person can help you understand how its features fit into your daily routine. At iSTYLE UAE, your Apple Premium Partner, you can explore Apple products and accessories at our showrooms across Dubai, Abu Dhabi, and the wider UAE. Our Apple experts can help you understand the iPhone Duo's features, compare storage options, and choose accessories that suit your needs. Here's what you can expect when shopping with iSTYLE UAE:

• 100% Genuine Apple Products: Shop for authentic Apple devices, chargers, and accessories backed by official Apple warranties.
• Convenient Trade-In Programme: Bring your eligible smartphone and use its trade-in value towards your next iPhone purchase.
• Flexible Payment Options: Choose from available 0% interest instalment plans through participating banking partners.
• Complimentary Data Migration: Get assistance with transferring your contacts, photos and other data when upgrading to a new device.

Ready to explore Apple's foldable smartphone? Visit the iSTYLE UAE online store or your nearest showroom to discover the iPhone Duo and its features.