Apple has finally entered the foldable smartphone market with the iPhone Duo, its first foldable iPhone.

Instead of simply making a larger iPhone, Apple has redesigned the device around a book-style folding design. When closed, the iPhone Duo works like a compact smartphone. When opened, it provides a large 7.6-inch inner display designed for multitasking, gaming, entertainment and productivity.

The iPhone Duo combines Apple’s latest A20 Pro chip, 48MP Dual Fusion camera system, titanium construction, dual-battery design and iOS 27.

Here is everything you need to know about Apple’s first foldable iPhone.

What Is the iPhone Duo?

The iPhone Duo is Apple’s first foldable smartphone.

It uses a book-style folding design with two displays:

• 5.4-inch outer display
• 7.6-inch inner folding display

The outer screen is designed for normal smartphone tasks, while the larger inner screen provides more space for apps, videos, games, documents and multitasking.

Apple has also developed new iOS experiences specifically for the foldable form factor.

iPhone Duo Display

The inner display is a 7.6-inch Super Retina XDR OLED folding display with a resolution of 1878 × 2670 pixels at 430 ppi.

It features a nano-texture finish designed to reduce glare and reflections.

The outer display measures 5.4 inches and has a resolution of 1398 × 2034 pixels at 460 ppi.

Both displays support:

• ProMotion up to 120Hz
• Always-On display
• HDR
• True Tone
• P3 wide colour
• Haptic Touch
• Dynamic Island
• Up to 3,000 nits outdoor peak brightness
• 1 nit minimum brightness
• Anti-reflective coating

The 7.6-inch inner display is the largest display ever used on an iPhone.

iPhone Duo Design and Build

The iPhone Duo uses a titanium foldable design with a titanium frame and hinge cover.

When opened, the device measures:

164.6 × 117.8 × 5.2 mm

When folded:

84.1 × 117.8 × 11.3 mm

The phone weighs 254 grams.

Apple uses Ceramic Shield 2 on the front and Ceramic Shield on the back.

The device is also rated IP68 for water and dust resistance.

iPhone Duo Hinge

The hinge is one of the most important components of a foldable smartphone.

Apple has developed a precision hinge containing more than 100 components. It is designed to provide balanced resistance while opening and closing the phone.

The hinge cover uses titanium, while Apple’s foldable construction is designed to maintain a thin profile when the device is opened.

The result is a foldable phone that measures only 5.2mm thick when unfolded.

iPhone Duo Processor: A20 Pro

The iPhone Duo is powered by Apple’s A20 Pro chip.

The chip features:

• 6-core CPU
• 2 super cores
• 4 efficiency cores
• 7-core GPU
• Neural Accelerators
• Dual 16-core Neural Engine
• Hardware-accelerated ray tracing

Apple has also incorporated a vapour-cooled thermal system to help manage heat during demanding workloads.

This makes the Duo suitable for gaming, video editing, photography, AI features and intensive multitasking.

iPhone Duo Camera System

The iPhone Duo features a 48MP Dual Fusion camera system.

It consists of:

48MP Fusion Main Camera

The Main camera supports:

• 48MP photography
• 24MP photography
• Sensor-shift optical image stabilisation
• Hybrid Focus Pixels
• Night mode
• Photonic Engine
• Deep Fusion
• Smart HDR
• Photographic Styles

48MP Fusion Ultra Wide

The Ultra Wide camera provides a 120-degree field of view and supports high-resolution photography and macro photography.

The camera system is designed to work with Apple’s computational photography features to produce detailed images in different lighting conditions.

Duo Preview and Foldable Photography

One of the interesting features of the iPhone Duo is Duo Preview.

Because the phone has a display on the outside, subjects can see a preview while someone is taking their photograph.

The folding design also gives users new ways to position the phone for photography and video recording.

This makes the foldable form factor useful beyond simply providing a bigger screen.

iPhone Duo Video Recording

The iPhone Duo is also designed for serious video recording.

It supports 4K Dolby Vision video up to 120fps using the Fusion Main camera.

Other video features include:

• Cinematic mode
• Slow-motion video
• Macro video
• Time-lapse
• Dual Capture
• Smart focus tracking
• Improved low-light video
• Spatial Audio
• Audio Mix
• Wind noise reduction

For content creators, the combination of the folding display and advanced video features makes the Duo particularly interesting.

iPhone Duo Front Camera

The iPhone Duo has a 12MP Center Stage front camera.

It supports:

• Center Stage
• Portrait mode
• Night mode
• Smart Take
• Photographic Styles
• Ultra-stabilised video
• Dual Capture
• 4K video recording

The inner display also incorporates an under-display camera, allowing the large screen to maintain a more immersive appearance.

iPhone Duo Battery Life

The iPhone Duo uses a dual-battery system designed specifically for the foldable form factor.

Apple rates the device for:

• Up to 44 hours of video playback using the outer display
• Up to 31 hours of video playback using the inner display

Battery performance will vary depending on how the phone is used.

Using the larger display extensively, gaming, high brightness and mobile data can all increase power consumption.

iPhone Duo Charging

The iPhone Duo supports USB-C charging along with wireless charging options.

It supports:

• MagSafe charging up to 25W
• Qi2 charging up to 25W
• Fast wired charging

With a compatible high-power adapter, Apple says the Duo can reach around 50 percent charge in approximately 20 minutes.

iPhone Duo Storage Options

Apple offers the iPhone Duo in four storage configurations:

• 256GB
• 512GB
• 1TB
• 2TB

The 256GB model should be sufficient for most users.

The 1TB and 2TB versions are more suitable for professional users who record large amounts of high-resolution video or maintain extensive media libraries.

iPhone Duo Price in India

The iPhone Duo starts at ₹2,99,900 in India for 256GB.

The current storage pricing is:

This makes the iPhone Duo significantly more expensive than Apple’s conventional Pro models.

The premium reflects the foldable display, hinge system, titanium construction and specialized hardware.

iPhone Duo Availability in India

Pre-orders for the iPhone Duo in India begin at 5:30 PM IST on October 16, 2026.

The phone will be available from October 23, 2026.

It will be offered in Star White and Night Sky finishes.

iPhone Duo Software

The iPhone Duo runs iOS 27.

Apple has redesigned parts of the iOS experience to take advantage of the foldable screen.

The larger display provides new possibilities for:

• Multitasking
• Gaming
• Video
• Browsing
• Productivity
• Content creation

The phone also supports Apple Intelligence and Apple’s next-generation Siri AI features.

Apple Pencil Support

The iPhone Duo supports the Apple Pencil with USB-C.

The Pencil can be used on both displays.

This could make the Duo useful for:

• Note-taking
• Sketching
• Annotations
• Marking documents
• Creative work

The large 7.6-inch display provides significantly more workspace than a conventional iPhone.

Touch ID Instead of Face ID

One of the biggest changes to the traditional iPhone experience is authentication.

The iPhone Duo uses Touch ID integrated into the side button instead of Face ID.

This approach works naturally whether the phone is folded or unfolded.

Is iPhone Duo Good for Gaming?

The iPhone Duo is designed to be a powerful gaming phone.

The combination of the A20 Pro chip, 120Hz ProMotion display and 7.6-inch inner screen provides a large and powerful gaming platform.

The unfolded display can make games more immersive, particularly strategy and graphics-heavy titles.

However, at 254 grams, the Duo is not a lightweight gaming phone.

Is iPhone Duo Good for Multitasking?

Multitasking is one of the biggest reasons to consider the Duo.

The 7.6-inch display provides much more space than a conventional smartphone.

The larger screen can be useful for:

• Email
• Documents
• Web browsing
• Video calls
• Note-taking
• Social media
• Research
• Watching videos while using other apps

Apple has specifically designed new iOS experiences around the foldable form factor.

iPhone Duo vs Traditional iPhone

The main difference is not simply the screen size.

A traditional iPhone is optimized around a single display and a straightforward smartphone experience.

The Duo provides two different experiences:

Folded: Compact smartphone

Unfolded: Large-screen productivity and entertainment device

This makes the Duo more versatile, but also more expensive and mechanically complex.

iPhone Duo: Key Specifications

Who Should Buy the iPhone Duo?

The iPhone Duo is particularly suited to users who:

• Want Apple’s first foldable iPhone
• Want a large display without carrying a tablet
• Frequently multitask
• Watch a lot of videos
• Play mobile games
• Take notes or sketch
• Create video content
• Want Apple Pencil support
• Already use Apple’s ecosystem
• Want a premium and distinctive smartphone

Who Should Skip the iPhone Duo?

The Duo may not be necessary if you:

• Prefer a conventional smartphone
• Do not need a large folding display
• Want the best value iPhone
• Prioritize maximum camera versatility
• Prefer a lighter device
• Are uncomfortable paying nearly ₹3 lakh for a smartphone

For these users, an iPhone 18 Pro or iPhone 18 Pro Max may be a more practical choice.

Final Verdict

The iPhone Duo is one of the biggest changes to Apple’s iPhone lineup in years.

It combines a 7.6-inch folding display, 5.4-inch outer screen, A20 Pro processor, 48MP Dual Fusion camera system, titanium construction, dual-battery design and iOS 27 into a completely new iPhone form factor.

Its starting price of ₹2,99,900 makes it a premium product rather than a mainstream iPhone.

For users who want the newest technology, a huge screen and Apple’s first foldable experience, the iPhone Duo is an exciting option.

For buyers who simply want the most practical high-end iPhone, the iPhone 18 Pro Max remains a more conventional choice.

The iPhone Duo is ultimately about doing more with one device—a smartphone when folded and a much larger screen when opened.

FAQs

What is the iPhone Duo?

The iPhone Duo is Apple’s first foldable iPhone, featuring a 5.4-inch outer display and a 7.6-inch inner folding display.

What processor does the iPhone Duo use?

The iPhone Duo uses Apple’s A20 Pro chip with a 6-core CPU, 7-core GPU and dual 16-core Neural Engine.

How much does the iPhone Duo cost in India?

The iPhone Duo starts at ₹2,99,900 for 256GB in India.

How big is the iPhone Duo display?

It has a 7.6-inch inner folding display and a 5.4-inch outer display.

How long does the iPhone Duo battery last?

Apple rates it for up to 44 hours of video playback using the outer display and up to 31 hours using the inner display.

Does iPhone Duo support Apple Pencil?

Yes. The iPhone Duo supports Apple Pencil with USB-C on both displays.

Does iPhone Duo have Face ID?

No. The iPhone Duo uses Touch ID integrated into the side button.

Is iPhone Duo water resistant?

Yes. The iPhone Duo has an IP68 rating for water and dust resistance.

When is iPhone Duo available in India?

Pre-orders begin on October 16, 2026, with availability starting October 23, 2026.

Is iPhone Duo worth buying?

It is worth considering if you specifically want a foldable iPhone, a large 7.6-inch display and new multitasking possibilities. For buyers who do not need a foldable design, a conventional Pro model may offer better value.