Apple’s long-rumoured foldable iPhone may have finally appeared in the wild—at least in prototype form.

A video posted by Canadian tech creator Lewis Hilsenteger, better known as Unbox Therapy, appears to show a foldable iPhone alongside an alleged iPhone 18 Pro Max. Hilsenteger said the device was supplied by an unnamed source in China and suggested that the prototype closely resembles what Apple could eventually release.

The alleged leak comes just days before Apple is expected to unveil its next-generation iPhone lineup, including its first foldable model. However, Apple has not confirmed the device, its design, or the September 9 launch date reported in connection with the iPhone 18 series.

The video has nevertheless attracted significant attention, with nearly two million views reported, as Apple enters what could be its biggest iPhone design change in years.

What does the alleged foldable iPhone 18 Ultra look like?

The device shown in the video follows the basic design expected from a book-style foldable smartphone.

When closed, it resembles a conventional smartphone with an exterior display. Opening the device reveals a much larger internal screen, giving users a tablet-like display area.

The alleged prototype appears to feature:

• A large inner folding display
• A separate outer display
• Two rear cameras
• A visible hinge and central crease
• Flat edges around the inner folding section
• Curved edges around the exterior
• A white matte finish
• A reflective Apple logo
• A front-facing camera cutout
• A revised button arrangement

The camera system shown on the rear appears notably simpler than the multi-camera systems found on Apple’s Pro iPhones, although the video alone cannot establish the final specifications.

Who leaked the alleged foldable iPhone?

Hilsenteger said an unnamed source in China provided the device shown in the video.

According to the YouTuber, the source has supplied iPhone-related devices for several years and has become increasingly accurate in predicting Apple’s final hardware designs.

He described the material coming from China as showing “increasing accuracy,” suggesting that the devices being supplied are becoming increasingly similar to Apple’s eventual production hardware.

That claim is important—but it is still not independent confirmation.

Prototype and dummy devices frequently circulate ahead of major smartphone launches. Some are based on information from manufacturers, accessory companies or supply-chain sources, while others can be produced from leaked dimensions or rumors.

The fact that an earlier source has accurately predicted hardware does not guarantee that every current prototype represents Apple’s final product.

Why are Chinese prototypes appearing before the iPhone launches?

China plays a central role in the global electronics supply chain, including the manufacturing and assembly ecosystem surrounding smartphones.

Before a major phone launches, manufacturers of cases, screen protectors and other accessories often need dimensions and physical specifications ahead of the public release.

That creates an environment in which physical mock-ups and early designs can circulate.

Some of these devices are not functional phones at all. They can be dummy units designed to replicate the dimensions, button placement, camera layout and external appearance of an expected product.

Others may be engineering prototypes or pre-production hardware.

That distinction is especially important in this case because the video does not establish whether the alleged foldable iPhone is a fully functional Apple prototype, an industry dummy model or another type of pre-release device.

The hinge and crease may be the biggest design controversy.

One detail has already attracted criticism: the visible hinge and crease running through the internal display.

Foldable phones have spent years trying to make their central crease less noticeable. Samsung, Google, Huawei and other manufacturers have developed increasingly sophisticated hinge and display systems, but folding displays still have physical limitations.

The alleged Apple design appears to have a noticeable fold when viewed at certain angles.

That has prompted negative reactions from some viewers, with complaints that the crease is too prominent and that the closed phone may not have the proportions they expected.

For Apple, the challenge could be particularly significant.

The company has spent years building its reputation around tightly controlled hardware design. A foldable iPhone would therefore be judged not simply against Apple’s existing phones, but against foldable devices already on the market.

Has Apple moved the volume buttons?

Another unusual detail in the alleged prototype is the button arrangement.

The volume controls appear to have been moved from their familiar position on the side of the phone toward the top edge.

The exterior also appears to include two additional physical controls, which could correspond to Apple’s familiar Action button and another control.

However, button placement is one of the easiest elements to change between prototypes.

It would therefore be premature to treat the arrangement shown in the video as confirmation of Apple’s final design.

How different could the foldable iPhone be from the iPhone 18 Pro Max?

The alleged foldable is expected to occupy a very different position from the conventional iPhone 18 Pro Max.

The Pro Max remains a traditional slab-style smartphone, while the foldable would prioritize screen size and multitasking.

The foldable could therefore appeal to customers who want a larger workspace without carrying a separate tablet.

Why would Apple enter the foldable-phone market now?

Apple would be entering a category that rivals have been developing for years.

Samsung, Google, Huawei, Motorola and other manufacturers have already released foldable smartphones in various forms. Apple has so far remained outside the category despite years of speculation about a foldable iPhone.

That delay could ultimately work in Apple’s favor.

Rather than being first, Apple could enter after the technology has matured and after manufacturers have learned more about hinge durability, display reliability, battery constraints and software design.

Apple’s biggest opportunity may therefore not be simply creating a phone that folds.

It would need to make the foldable format feel meaningfully different from—and better integrated than—the existing alternatives.

What could make Apple’s foldable different?

A successful foldable iPhone would need more than a flexible screen.

Apple could potentially differentiate the device through the interaction between hardware and software.

A larger internal display could provide additional room for:

• Multitasking
• Side-by-side apps
• More advanced productivity features
• Larger gaming interfaces
• Video editing
• Reading and document work
• More desktop-like workflows

The company’s ecosystem could also be a major selling point. Users already invested in Apple’s devices could potentially use the larger foldable display alongside Macs, iPads, AirPods and other products.

But none of those capabilities should be treated as confirmed until Apple officially announces the product.

When could Apple announce its first foldable iPhone?

The alleged device is expected to be unveiled alongside the iPhone 18 generation, with September 9, 2026, being cited as the potential announcement date.

That date should be treated as a reported expectation rather than a confirmed launch date unless Apple officially announces it.

Apple traditionally keeps unreleased products tightly controlled, making independent leaks especially difficult to verify.

The strongest confirmation will ultimately come from Apple’s own launch event and official product specifications.

What should we make of this leak?

The Unbox Therapy video is interesting because it provides something more tangible than conventional renders or anonymous specifications: a physical device that can be opened, examined and compared with another alleged upcoming iPhone.

But physical does not automatically mean authentic.

The most reasonable conclusion at this stage is that the device appears consistent with the broader rumors surrounding Apple’s first foldable iPhone, but its status as Apple’s final production hardware remains unconfirmed.

The source’s previous track record, if independently verified, would make the leak more noteworthy. Even then, Apple could change elements of the design before mass production.

The real test will be Apple’s execution

If Apple does unveil a foldable iPhone, the company’s biggest challenge may not be convincing consumers that foldable phones are useful.

That argument has already been made by competitors.

Instead, Apple will need to answer a more difficult question: Why should someone choose Apple’s foldable over the growing number of established alternatives?

The leaked prototype offers some possible clues—a large internal display, a conventional outer screen, a relatively simple rear camera system and a distinctive hinge design.

But it also highlights the problems Apple must solve, particularly the visibility of the crease and the thickness and proportions of a folding device.

For now, the alleged iPhone 18 Ultra remains just that: an alleged pre-release device.

If the September 2026 launch reports prove correct, consumers may not have to wait much longer to find out whether this mysterious prototype really represents Apple’s next major iPhone design—or simply another step on the long road toward it.