The iPhone Duo, which starts at 1,999 U.S. dollars in the United States, features a 5.4-inch (13.7-centimeter) outer display that opens to reveal a 7.6-inch (19.3-centimeter) inner display, the largest ever on an iPhone, according to Apple.
When closed, the device is roughly the size of a passport, the company said. When unfolded, it is Apple’s thinnest iPhone to date.
The iPhone Duo is made of Grade 5 titanium and features a precision hinge. Its inner and outer Super Retina XDR displays have the same aspect ratio, allowing content to scale proportionally as users switch between the two screens.
The device is powered by Apple’s new A20 Pro chip, the same processor used in the iPhone 18 Pro models. Built on a 2-nanometer process, the chip features a six-core CPU, a seven-core GPU and dual 16-core Neural Engine designed to support on-device artificial intelligence (AI) workloads, Apple said.
The foldable phone also features a dual-battery architecture and a custom vapor chamber for thermal management. It offers up to 31 hours of video playback on the inner display and 44 hours on the outer display, according to Apple.
Apple has redesigned parts of its iOS 27 operating system to accomodate the foldable form factor. A new Split View feature allows users to run two apps side by side on an iPhone for the first time, while also enabling them to open two windows of the same app.
The iPhone Duo comes with Apple Intelligence and Siri AI. Apple said Siri AI will begin rolling out as a beta with iOS 27 on Sept. 14 for supported devices set to English, with several additional languages to follow in October.
The iPhone Duo will be available in star white and night sky, with storage options of 256GB, 512GB, 1TB and 2TB. Pre-orders will begin on Oct. 16 in more than 70 countries and regions, with availability beginning Oct. 23. The phone will launch in an additional 28 countries and regions on Oct. 30.
Apple also unveiled the iPhone 18 Pro and iPhone 18 Pro Max, starting at 1,199 dollars and 1,299 dollars, respectively. Both models are powered by the A20 Pro chip and feature a new 48-megapixel Fusion Main camera with variable aperture, along with improvements in battery life and sustained performance.
The iPhone 18 Pro models will be available with 256GB, 512GB, 1TB and 2TB of storage. Pre-orders will begin Sept. 12, with availability starting Sept. 18 in more than 65 countries and regions.
Apple also introduced Apple Watch Series 12 and Apple Watch Ultra 4, featuring a new Health Sensing System and the S11 chip. The company said the system enables more frequent measurements of heart rate and heart-rate variability, as well as a new readiness score. The Apple Watch Series 12 starts at 399 dollars, while the Apple Watch Ultra 4 starts at 799 dollars.
AirPods 5 were also unveiled at the event, bringing Active Noise Cancellation to Apple’s entry-level AirPods lineup. The new model starts at 129 dollars, while a version with a wireless charging case and additional controls costs 149 dollars.
The event marked the first major Apple product launch led by John Ternus since he took over as the company’s CEO. The introduction of the iPhone Duo marks Apple’s entry into the foldable smartphone market.
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