Apple's new foldable iPhone Duo arrives as the company's most ambitious smartphone design yet, but it also makes clear trade-offs compared with the iPhone 18 Pro and iPhone 18 Pro Max. The device focuses on flexibility and portability, while leaving several premium tools behind.
What the foldable model skips
Unlike the Pro lineup, the Duo does not include an Action button or a mute switch, relying instead on volume and power controls. Its front-facing camera setup is also less advanced than the 18 Pro series, which uses an 18-megapixel Center Stage camera. The Duo does offer a creative selfie advantage when unfolded, since users can frame shots with the rear camera system.
On the imaging side, Apple's foldable model uses fixed-aperture rear cameras, so it misses the variable aperture control found on the Pro phones. It also does not support Pro Controls, Apple Reference Image, telephoto zoom, Spatial photos, Spatial videos, or ProRAW. The Pro models further stand out with a four-microphone array designed for richer video audio.
Design choices and everyday use
For security, the Duo uses Touch ID instead of Face ID, a practical choice for a device with multiple display modes. It also omits LiDAR, which limits some depth-sensing and measurement features available on Pro devices. Color options are also more restrained, with only Night Sky and white available.
Another notable difference is connectivity: the iPhone Duo is eSIM-only worldwide, reflecting Apple's push toward a more streamlined mobile experience. That approach may appeal to frequent travelers and users who prefer digital SIM management.
As foldable phones mature, devices like the iPhone Duo could help define a future where design flexibility and advanced mobile computing move even closer together.
