Apple said the device would sell for a base price of $1,999. Preorders would start Oct. 16, and the device will be available at stores on Oct. 23, the company said.Once opened, the doublewide screen is 50% larger than the size of the iPhone Pro Max and measures 7.6 inches on the diagonal, said Greg Joswiak, Apple’s senior vice president for worldwide marketing. He said the device is made of titanium, has speakers on the top and bottom and initially will come in two colors: “star white” and “night sky.”Apple said the iPhone Duo actually two screens: an internal screen that’s visible when it’s opened like a book, and an external screen on the outside. Videos of the device showed that the screen is usable even when the phone is not fully unfolded.The shape is also unusual: When folded, the iPhone Duo looks like a large D with two rounded edges.The announcement, described by Ternus as “one more thing” in a phrase coined by Apple cofounder Steve Jobs, capped a day of product announcements by Apple.iPhone 18 Pro will be available in four finishes: black, silver, glacier, and burgundy.AppleTernus and other employees announced the iPhone 18 Pro and iPhone 18 Pro Max, which include incremental changes to the product lines like new colors and a new ability to customize the voice of its Siri artificial intelligence assistant.The company highlighted increased battery capabilities in the iPhone 18 Pro and Pro Max, which it says charges faster than previous generations and has over 24 hours of battery life.Other changes include a feature called “Apple Reference Image,” which the company said could be used to prove the authenticity of an image in an era when AI-generated content is becoming ubiquitous.The company also said it was improving the aperture control on the iPhone camera and the device’s thermal management, which is designed to prevent overheating.Apple Reference Image provides users with an unalterable reference photo, visually confirming what the sensor saw at the moment of capture.AppleTernus inherits a company facing increasingly serious competition in phones and pressure to show that it can still drive the upgrade cycles that made the iPhone the most profitable product in consumer electronics.Wall Street investors appeared to shrug at the iPhone Duo announcement, which was widely expected ahead of Wednesday’s event. Apple shares were down 1.9% in afternoon trading, lower than when the livestream event started.A foldable iPhone is Apple’s first genuinely new iPhone form factor in nearly two decades. The appeal of the devices is often about their size — some foldable phones expand to be as large as a tablet, while others are marketed for how compact they are when they fold up.Apple is known for launching products into existing markets and quickly taking over market share, as it did with wireless headphones and smartwatches. Samsung has cornered the foldable phone market since 2019, building niche demand for the product that shipped 19.6 million units in 2025, just a fraction of overall smartphone sales.On Monday, Chinese tech companies Huawei and Xiaomi launched their own foldable phones, priced at $2,980 and $3,725, respectively.Fans of foldable devices have worked to attract converts and dispel consumers’ potential concerns, including about durability: If it can fold, does that mean it can break more easily? Livestream videos posted online claim to show users folding some devices 200,000 times.So far, though, foldable phones have struggled to break through to a major success in the mobile market. The idea of a flexible display has been around for decades. In 2007, the same year Apple introduced the iPhone, a company called Polymer Vision released a prototype of a foldable e-reader called Readius with a grayscale display. The company shuttered in 2009.This is a developing story. Please check back for updates.