How we really feel about the iPhone Duo | Livestream

What It Covers

Verge reviewers Neil Patel and Allison Johnson join David Pierce to assess Apple's first foldable iPhone, the Duo, examining its $2,000 price point, outer screen usability, app optimization failures, battery life variability, camera trade-offs versus the iPhone 18 Pro, and whether the device functions as a genuine first-generation product or a flawed early adopter experiment.

Key Questions Answered

• •Outer screen usability: The Duo's cover display works adequately for input tasks — sending texts, quick notes, changing settings — but fails for consumption. Reading emails, viewing Slack threads, or leaving Google Doc comments requires opening the inner screen. Users who keep the phone open constantly report significantly worse battery life, making usage habits the single biggest variable in the ownership experience.
• •App optimization tiers: Developers updating for the Duo fall into three categories: unoptimized apps that appear as tiny floating rectangles, iOS 27-updated apps that auto-expand but leave a black bar consuming significant screen real estate, and full Duo-enhanced apps that reposition controls to the side. Most major apps — Gmail, Instagram, YouTube — land in the middle tier, producing what reviewers describe as "vibe coded" layouts where elements overlap or make no logical use of the expanded space.
• •Battery life variability: Reviewers who kept the inner screen open consistently reported poor battery life, while reviewers who primarily used the cover display — keeping the phone closed — reported strong battery performance comparable to other flagship iPhones. This means battery life on the Duo is not a fixed spec but a direct function of how frequently users open the device, making it harder to evaluate than any standard slab-style phone.
• •Camera trade-offs: The Duo uses a smaller main sensor than the iPhone 18 Pro, with Apple compensating through aggressive software processing via the A20 Pro chip. The result is noticeable over-sharpening and heat generation during extended camera use. The telephoto lens is absent entirely. Reviewers estimate camera quality is roughly equivalent to an iPhone 14 or 15, meaning buyers upgrading from an 18 Pro face a measurable regression, not a lateral move.
• •iPhone Handoff limitations: Apple's dual-iPhone handoff feature, which allows users to keep a regular iPhone for photography while using the Duo as a work device, currently only functions on T-Mobile and costs approximately $5 per month extra. The Apple Watch remains paired to only one device, and the broader app ecosystem is built around single-phone ownership, creating signal confusion and compatibility issues with third-party health and fitness apps.
• •Hidden settings that matter: Two non-obvious settings significantly change the Duo experience. First, a buried menu option disables the Touch ID unlock delay, making authentication nearly as fast as Face ID. Second, an auto-reorient volume buttons setting — off by default — causes the top button to function as volume down when the phone is open, the opposite of every established convention. Both settings require manual discovery and represent defaults reviewers consider incorrect out of the box.