Apple Announces First Foldable iPhone Duo: Price and Specs

Apple unveiled its first foldable smartphone at its September 2026 event. According to reporting by Jay of QbitAI, the official name is iPhone Duo. It features a 5.4-inch outer OLED and a 7.6-inch inner OLED, with pricing in China starting at 15,999 yuan. The iPhone 18 Pro series and a revamped voice assistant were also shown at the event.

The foldable made its appearance as the final highlight of the event. It marks Apple’s entry eight years after Android makers introduced foldables. The name chosen was Duo, not Ultra as rumored beforehand. Apple explained that Duo means “two” in Latin, reflecting its dual-screen character.

Full Overview of the Foldable iPhone Duo

The iPhone Duo has a 5.4-inch display when closed and a 7.6-inch display when open. Both the inner and outer panels use OLED, and the open display area is 50% larger than that of the 18 Pro Max. The aspect ratio is close to that of the iPad mini, and it supports Apple Pencil. The design aims to merge the phone and the tablet.

The operating system, iOS 27, has been specially optimized. Some controls have been moved to the right side to expand the display area for main content. The dedicated Siri display and Dynamic Island configuration also differ from slab models. Apple also introduced a mode for standing the device on a desk to use as a table clock or weather display.

For biometrics, side-mounted fingerprint authentication is used. It marks the return of Touch ID, long absent from the iPhone. The camera is a dual setup with a 48-megapixel main camera and a 48-megapixel Fusion Ultra Wide camera. There is no dedicated telephoto lens, but preview on both the inner and outer displays is supported.

It has a dual-cell battery said to last 24 hours on a single charge. It can recharge to 50% in 20 minutes. Apple announced 44 hours of video playback on the outer display and 31 hours on the inner display. The balance of thinness and battery life was emphasized.

Liquid Metal Hinge and AI-Assisted Design

The visibility of the center crease was the technical focus this time. A live demonstration at the event showed the crease as nearly invisible. The key is the use of a zirconium-based amorphous titanium alloy. It is a material known as liquid metal.

It is said to be about 2.5 times as strong as titanium alloy and about 20% lighter than steel. With no grain boundaries, it is highly resistant to metal fatigue and disperses folding stress. The choice aims to suppress the crease and ensure durability at the same time. Apple described it as the thinnest iPhone ever.

AI assistance was used in the design process. Details of the specific training methods and validation conditions were not disclosed. Machine learning is believed to have been applied to shape optimization and stress analysis. The integration of material development and structural design is its defining feature.

A20 Pro and Enhanced Connectivity

At its core is the latest A20 Pro, built on a 2nm process. It shares the same platform as the 18 series, and the CPU has a 6-core configuration. Two of the cores are high-performance cores Apple describes as desktop-class, with 20% faster speed. The GPU has 7 cores with 40% improved graphics performance.

Enhanced on-device artificial intelligence was front and center. The neural accelerator is twice as fast at FP8 precision. The Neural Engine has 32 cores with twice the compute of the previous generation. It supports 8-bit floating-point operations, with memory bandwidth also up 50%.

For connectivity, the new C2 baseband is included. It supports mmWave 5G, with 50% faster uplink speeds. Power consumption is reduced by 15% compared with C1. It is positioned as the operating foundation for Apple Intelligence and the new Siri AI.

What’s New in iPhone 18 Pro

The iPhone 18 Pro and iPhone 18 Pro Max were also announced at the same time. The exterior is almost the same as before, offered in four colors. Deep black, silver, glacier blue, and burgundy red are available. The Dynamic Island is smaller in area while able to display three Live Activities at once.

Improved battery life was emphasized. Even the smaller 18 Pro was said to match the previous generation 17 Pro Max. For video playback on eSIM-only models, the Pro lasts up to 36 hours and the Pro Max up to 45 hours. In everyday use, the Pro was described as lasting 24 hours and the Pro Max 30 hours.

Charging speed was also increased. The 18 Pro recovers to 50% in about 15 minutes with wired charging. Five minutes of fast charging was said to allow about six hours of video playback. Apple said it built a battery-life model based on real-world usage data.

For photography, it carries a 48-megapixel Fusion main camera. The highlight is support for variable aperture for the first time. Six laser-cut blades were developed in-house, one thinner than a human hair. Special polymer composite materials and a rotor mechanism ensure stable image quality.

Pricing and a Turning Point in Product Strategy

The iPhone Duo starts at $1,999 in the United States. In China, the 256GB model is 15,999 yuan, and the top 2TB model is 26,499 yuan. The iPhone 18 Pro starts at 9,999 yuan, and the Pro Max starts at 10,999 yuan. The 1,000-yuan price increase is said to be due to memory shortages.

The standard iPhone was not announced this time. It is its first absence in 10 years, with the Air 2 expected together next March. Only the two flagship models took the stage this time. It reflects a move to focus the lineup on flagships and foldables.

Among accessories, AirPods 5 improved noise cancellation by 50% over the previous generation. Apple Watch features a new sensing system with more frequent heart-rate acquisition. Siri AI is deeply integrated into the OS and works with more than 300,000 apps. After the announcement, the company’s stock turned from morning weakness to gains.

Editorial Opinion

On short-term impact. The introduction of the foldable will bring changes to the parts supply chain and price competition. Orders for liquid-metal processing and thin batteries are expected to increase, potentially changing the order mix for related companies. The price increase for the 18 Pro may lead to wait-and-see demand, shifting the early sales mix toward higher storage capacities.

On the long-term perspective. The integration of phone and tablet will change the direction of app development. Optimization for multi-display setups and portable computer form factors will advance, potentially diversifying the shapes of mobile devices. Stronger on-device AI will reduce data traffic and improve responsiveness, changing usage patterns.

Questions from the editors. The durability of the crease needs to be verified through long-term use. Transparency about the process in which AI participated in the design is also in question. Whether the basis for material selection and test data will be disclosed is at issue. The question is whether price will be a barrier to adoption or practicality will outweigh it.

References

• “刚刚，苹果首款折叠屏发布！15999元起，AI参与设计”, by Jay — 量子位, 2026-09-09T19:24:22.000Z (ARR)
• Source URL: https://www.qbitai.com/2026/09/486450.html