Apple iPhone Duo review reveals messy first-gen foldable with passport shape

The iPhone Duo is Apple’s first foldable smartphone, which The Verge describes as a messy first-generation product. The outlet reports that the device represents the riskiest Apple product in years, fundamentally rethinking the iPhone form factor. The review suggests the launch targets early adopters and gadget enthusiasts, while potentially frustrating broader consumer segments due to its current limitations.

The iPhone Duo features a wide aspect ratio shaped like a passport, marking a significant departure from the tall-and-narrow designs dominant in the foldable market. This design choice makes the inner screen more suitable for 16:9 video content, such as YouTube, but creates challenges for the outer cover display. The Verge notes that this landscape-first approach forces Apple to solve new problems regarding vertical app compatibility on the smaller front screen.

Design Strategy and Market Context

The last major redesign of the iPhone was the iPhone X, which removed the home button nearly a decade ago. Since then, improvements have been subtle, such as the thermal and lens refinements in the iPhone 18 Pro compared to the iPhone 17 Pro. The Verge states that Apple’s business model relies on incremental changes, making the radical shift to a foldable a significant risk. The company had to make decisive choices about screen sizes and display roles, with the size and shape being the most critical decision.

Competitors had previously embraced tall-and-narrow foldables to optimize for vertical apps on cover screens. However, rumors of Apple’s landscape-first approach led other manufacturers to shift their strategies, seemingly to get ahead of Apple’s release. Now, with the iPhone Duo and a handful of competitors adopting the wide format, the industry faces the shared challenge of designing cover screens that function adequately for vertically oriented applications.

User Experience Implications

The iPhone Duo’s design directly impacts how users interact with popular vertical media platforms. The Verge reports that users will likely watch less TikTok on the device because the cover display is too small for optimal viewing. While the inner screen offers a larger canvas, the external display’s limitations create a fragmented experience for apps that rely on vertical orientation. This trade-off highlights the difficulties of transitioning from traditional smartphone ergonomics to a wide foldable format.

The device is currently positioned as an "early adopter special," appealing to those interested in experimental technology rather than mainstream consumers. The Verge suggests that while the iPhone Duo contains seeds of fascinating future ideas, that future has not yet arrived. For now, the product delights niche audiences while presenting usability hurdles for the general public, reflecting the inherent risks of pioneering a new hardware category.

What should you do?

If you are considering purchasing the iPhone Duo, evaluate your reliance on vertical apps like TikTok or Instagram Reels on the cover screen. Test the device in-store to assess whether the passport-like shape and small outer display meet your daily usability needs. Monitor software updates to see if Apple improves app scaling for the wide format. Wait for independent reviews that focus on long-term durability and hinge reliability before committing to the purchase.

What to do and how to stay safe: Apple

• Assess your daily app usage to determine if the small cover screen hinders your workflow, particularly for vertical content.
• Compare the iPhone Duo’s wide aspect ratio against your current device to understand the ergonomic differences.
• Wait for third-party durability tests and long-term reviews before purchasing, as this is a first-generation product.
• Check if your essential apps are optimized for the new landscape-first foldable interface.

Step-by-step guide: Mobile Device Security: How to Protect Data Beyond Passwords

General security guidance from the Threat Times newsroom. It is not confirmed advice from the organisations named in this story.

Frequently asked questions

Why is the iPhone Duo considered a risky product for Apple?

The iPhone Duo is a radical departure from Apple’s strategy of subtle improvements, introducing a complex foldable form factor that has not been fully refined for mainstream usability.

How does the iPhone Duo’s shape differ from other foldable phones?

The iPhone Duo uses a wide, passport-like aspect ratio, whereas most foldable phones released prior to 2026 used a tall-and-narrow shape to optimize for vertical apps.

What is the main usability drawback of the iPhone Duo’s cover screen?

The cover display is too small for optimal use of vertically oriented apps, such as TikTok, which may frustrate users accustomed to full-screen vertical content.