Apple has entered the foldable smartphone market with the launch of the iPhone Duo, a $1,999 device that represents one of the company’s most significant changes to its flagship smartphone lineup in years. Unveiled on September 9, the foldable iPhone combines the familiar design and software experience of an iPhone with a larger display that opens to offer a tablet-like workspace.
The iPhone Duo has been designed around a compact, passport-inspired form. When closed, the device resembles a small, rounded rectangle that can be comfortably carried and operated like a conventional smartphone. Once unfolded, it reveals a 7.6-inch display measuring roughly 19 centimeters across. The screen can be used in both horizontal and vertical orientations, giving users more flexibility depending on the task.
Apple says the foldable model is its thinnest iPhone when opened. The company has focused heavily on the physical design, using a titanium body and a newly developed hinge system intended to make the transition between the folded and unfolded positions feel smooth. The design also aims to maintain a consistent screen aspect ratio, addressing one of the complaints Apple has raised about existing foldable smartphones.
The launch marks a particularly important moment for Apple because the company has historically taken a cautious approach to foldable phones. While competitors have introduced several generations of foldable devices, Apple has continued to refine the conventional smartphone format. The arrival of the iPhone Duo therefore signals a major shift in how Apple sees the future of its most important hardware product.
The event was also the first major iPhone launch led by new Apple CEO John Ternus. During the presentation, Ternus positioned the Duo as an alternative to the compromises found in many existing foldable smartphones. Rather than simply making a phone screen larger, Apple has attempted to create a device that can move between a traditional smartphone experience and something closer to an iPad.
“It’s entirely new and at the same time remarkably familiar. A similar size to your passport, it feels familiar to hold and comfortable to use with one hand,” Ternus said.
The larger display is expected to be particularly useful for people who use their smartphones for work. Apple demonstrated the Duo handling video meetings with multiple participants while also providing more space for workplace applications such as Slack. The company also showed multiple application windows operating simultaneously, allowing users to work across different tasks without constantly switching between screens.
This approach gives the iPhone Duo a stronger productivity focus than a typical smartphone. Instead of treating the expanded display primarily as a larger screen for entertainment, Apple is presenting it as a practical workspace that can fit into a pocket when folded. For professionals who frequently read documents, respond to messages, attend video calls or work across several applications, the additional screen area could be one of the device’s biggest advantages.
The hinge is another important part of Apple’s strategy. Foldable phones depend heavily on hinge engineering because the mechanism must withstand repeated opening and closing while protecting the flexible display. Apple has emphasized the custom hinge in the Duo as part of its effort to create a device that feels more refined than earlier generations of foldable phones.
Apple has also equipped the iPhone Duo with its new A20 chip. The processor is designed to handle the demands of the device’s two-screen configuration and the larger unfolded display. A more powerful processor is particularly important for a foldable phone because it has to manage additional display space, multitasking and demanding applications without compromising the responsiveness expected from a premium iPhone.
Another notable change is Apple’s new C2 modem. The company has been working to reduce its dependence on Qualcomm for cellular modem technology, and the Duo becomes part of that broader transition. Developing its own modem technology gives Apple greater control over the hardware and software integration inside its smartphones, although the long-term impact of that strategy will depend on real-world performance, reliability and network compatibility.
The iPhone remains central to Apple’s business, making the introduction of a new form factor much more than a simple product expansion. The company generated $209.6 billion from iPhone sales in its most recent fiscal year, accounting for slightly more than half of its overall sales. A successful foldable model could therefore create another source of growth while encouraging existing iPhone users to upgrade to a more expensive device.
At $1,999, however, the iPhone Duo occupies a very different price category from Apple’s standard smartphones. The iPhone 18 Pro starts at $1,199, while the Pro Max begins at $1,299. The substantial price difference means the Duo is likely to appeal first to customers who are willing to pay a premium for a new form factor rather than people simply looking for the latest iPhone.
That premium positioning could work in Apple’s favor if the company succeeds in making the device feel sufficiently different from an ordinary smartphone. Foldable phones remain an emerging category, and buyers often have to decide whether the larger screen and flexible design justify the additional cost. Apple’s reputation, ecosystem and emphasis on integration could help the Duo attract consumers who have previously avoided foldable devices.
The company is also entering a market where expectations have already been shaped by competitors. Samsung, Google and several Chinese smartphone manufacturers have spent years developing foldable phones, giving consumers more experience with different hinge designs, screen formats and multitasking features. Apple will therefore be judged not only on how impressive the Duo looks at launch but also on durability, battery life, software optimization and everyday usability.
Apple is pairing the hardware launch with broader software changes as well. The company says an updated Siri will be able to work with 300,000 applications when the new system becomes available. Greater integration between the assistant and third-party applications could become particularly useful on a larger foldable display, where users have more room to interact with multiple services and tasks.
