I tested the iPhone Duo for a week — my favorite foldable yet, but there's a catch

Introduction to Apple's First Foldable

I honestly haven’t been this excited about a new iPhone since the iPhone X nearly a decade ago. The iPhone Duo finally gives Apple fans a foldable phone, and there’s something really cool about having a 5.4-inch iPhone that transforms into a 7.6-inch mini tablet in your pocket, complete with dual-app multitasking. Finally!

Apple’s first foldable phone doesn’t look or feel like a first attempt, either, because of the sheer attention to detail. The way the friction hinge holds nearly any angle, the seamless switching between the cover and main display with the same aspect ratio, and the nano-texture coating which minimizes glare and the dreaded crease all contribute to an incredible initial impression. It feels like playing with a $2,000 Transformer.

On the other hand, the Duo name is apt because I’m of two minds about it. While the first wave of iPhone Duo apps look great, many third-party apps aren’t optimized for this form factor yet. And then there’s the trade-offs versus traditional flagships, such as the lack of a telephoto zoom and Face ID. I’ve spent the past week living with this device as my daily driver to answer all your most pressing questions.

Who is the iPhone Duo for?

The iPhone Duo is targeted toward individuals who want a larger screen on the go for streaming videos and gaming, as well as heavy multitaskers who want to run two apps simultaneously. It is designed for users who want both a compact phone and a tablet in a single pocketable device—and who are willing to pay a hefty $2,000 premium to get it.

During testing, this device proved invaluable for managing workflows, checking professional chats, and viewing media streams simultaneously without endless scrolling. Business travelers and power users will likely find plenty to love about this form factor.

Design and Build Quality

The build quality feels distinctly like an Apple product. While the passport design has been explored by competitors like Samsung, Apple’s Duo feels notably polished. The asymmetrical layout features a flat left side and rounded corners on the right, enabling identical 1.4:1 aspect ratios on both the cover and the main display.

The polished titanium frame provides a premium feel while offering superior durability over standard aluminum. Furthermore, the hinge includes a variable torque profile that allows users to position the phone at virtually any angle, complete with a satisfying magnetic clasp when closed.

Display and Nano-Texture Coating

The introduction of a matte nano-texture display on the inner screen is a polarizing choice. On one hand, it significantly reduces glare and creates a paper-like texture that feels wonderful when reading ebooks. On the other hand, it mutes the inking blacks and vibrant hues typically associated with standard glossy OLED panels.

The cover screen remains a traditional glossy panel with rich color saturation, perfect for quick interactions and social media scrolling. Meanwhile, the inner screen minimizes the crease better than almost any folding device on the market today.

Software, Touch ID, and Multitasking

Running a specialized version of iOS, the iPhone Duo handles split-screen multitasking intuitively. Swiping up on an open app lets you dock it to either side of the screen seamlessly. However, the absence of Face ID means users must rely on Touch ID embedded within the side power button, which introduces a slight unlocking delay.

App optimization remains a mixed bag. Apple’s native applications and major platforms like Slack and Spotify look incredible in dual-pane layouts, but non-optimized third-party apps still suffer from letterboxing.

Camera Capabilities

The camera system features a 48MP main sensor and a 48MP ultrawide lens, capturing vibrant and detailed photographs. However, the omission of a dedicated telephoto zoom lens means that shots past 8x digital zoom quickly lose sharpness compared to traditional non-folding flagship devices.

Verdict

The iPhone Duo is easily one of the most uniquely designed foldables available, offering incredible performance, solid battery life, and innovative software modes. While compromises like the lack of a telephoto lens, muted nano-texture color reproduction, and high price tag exist, it sets a high benchmark for the future of mobile technology.