Apple Enters the Foldable Era With the iPhone Duo

Key points

Apple unveiled the iPhone Duo, its first foldable smartphone, featuring a 7.6-inch inner display and a 5.4-inch outer cover screen starting at $1,999 ¹ ³⁵.
Under the leadership of new CEO John Ternus, Apple also launched the iPhone 18 Pro lineup powered by the 2nm A20 Pro chip and a brand-new variable-aperture main camera ¹ ⁹ ³⁶.
Rivals such as Huawei and Xiaomi timed their own high-end foldable announcements – featuring in-house silicon and trifold designs – just days ahead of Apple's Cupertino event ¹¹ ¹⁴ ⁴⁷.
The iPhone Duo introduces unique features like Apple Reference Image for photo authentication and an advanced multi-component hinge, though regional omissions like Siri AI in the EU have drawn scrutiny ³⁵ ³⁷ ⁴³.

Breaking the Mold

For nearly two decades, the iPhone has defined itself by a single immutable form factor, a flat and rigid rectangle introduced by Steve Jobs in 2007 ³. That era officially closed during Apple’s annual fall hardware keynote in Cupertino, where the company revealed its long-rumored entry into the bendable device category ¹ ³⁵. Titled the iPhone Duo, the new device marks the most significant design shift in the product’s history ¹. Taking the stage for his first major keynote as chief executive, John Ternus presented the device as an intelligent personal hub designed to bridge the gap between pocketable portability and expansive tablet-sized utility ¹ ³⁰.

Unlike competitors who rushed into the market during the late 2010s, Apple spent years refining its approach to avoid the awkward bulk and visible creases that plagued early foldable iterations ¹ ⁶ ¹⁵. The Duo opens like a passport, pairing a 7.6-inch inner Super Retina XDR display with a 5.4-inch outer screen that retains a familiar aspect ratio for seamless transitions ³⁵ ³⁷. Crafting this hardware required an intricate mechanical assembly, including a precision titanium hinge built from more than 100 components and a multi-layer lamination system designed to let internal layers glide past one another smoothly ³⁴ ³⁵.

Under the Hood and Into the Lens

Beneath its polished titanium exterior, the iPhone Duo houses Apple’s cutting-edge A20 Pro processor, built on a dense 2-nanometer process that delivers substantial performance and memory bandwidth gains ²⁵ ³⁵. The Duo shares this powerhouse silicon with the newly announced iPhone 18 Pro and Pro Max lineup, which also received significant thermal upgrades via a redesigned vapor chamber system ³⁶. Battery architecture on the foldable relies on dual cells split across both halves of the chassis, offering robust daily endurance despite driving two separate displays ²⁰ ³⁴.

Photography on the Duo leverages a dual-lens setup featuring a 48-megapixel Fusion main camera and a 48-megapixel ultra-wide sensor, though it stops short of the variable-aperture technology found exclusively on the standard iPhone 18 Pro models ²⁵ ³⁶. Apple leaned heavily into the unique form factor to introduce novel software tricks, such as Duo Preview, which shows subjects their live reflection on the outer screen, and Smart Take, an automated shutter trigger driven by on-device intelligence ³⁵. Meanwhile, the iPhone 18 Pro introduces an innovative Reference Image feature that cryptographically signs captured pixels to authenticate original photography against AI manipulation ⁷ ³⁶.

Navigating a Crowded Market

Apple’s arrival in the foldable arena comes at a time when the category is maturing, though it still accounts for a relatively small fraction of global smartphone shipments ¹ ¹⁴. Rivals have hardly stood still; just days before Apple’s event, Chinese heavyweights Huawei and Xiaomi rolled out sophisticated new foldables featuring in-house silicon and aggressive pricing structures ¹¹ ¹⁴ ⁴⁷. Huawei pushed boundaries with its latest trifold device, while Xiaomi targeted the passport-style footprint popularized by Samsung ¹⁴ ²⁹. Against this backdrop, the iPhone Duo starts at $1,999 for the base 256GB model, positioning Apple at the top end of the market without attempting to undercut established competitors ²⁵ ³⁷.

Market analysts expect Apple’s immense brand loyalty to catalyze broader consumer interest and propel foldable adoption forward ¹⁴ ³³. However, rollout hurdles remain apparent. European customers purchasing the new hardware face notable day-one software limitations, as regulatory friction under the Digital Markets Act has delayed the launch of Siri AI and certain advanced features across the EU ³⁷ ⁴³. As pre-orders open and devices reach consumers later in October, the ultimate test will be whether Apple’s polished execution can successfully transform a luxury niche into a mainstream standard ³⁵ ³⁷.

Companies mentioned: Apple (AAPL $315.34 ▼0.3%) • Huawei • Xiaomi • Samsung

Primary sources

Apple unveils folding iPhone Duo as new CEO takes center stage (theguardian.com) – The primary announcement coverage detailing Apple's unveiling of the iPhone Duo foldable phone under new CEO John Ternus, alongside the iPhone 18 Pro lineup, AirPods 5, and Apple Watch updates. Published by The Guardian.
Huawei launches new foldable smartphone; Xiaomi and Apple set to follow (reuters.com) – A brief news roundup noting Huawei's concurrent foldable smartphone launch and upcoming competitor releases from Xiaomi and Apple. Published by Reuters.

Further sources

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