What You Lose When Switching to the iPhone Duo

Apple has introduced its first foldable smartphone, the iPhone Duo, priced at a minimum of $2,000, but the device leaves behind several standard capabilities found on traditional models. While the device features a matte-finish inner folding display and software redesigned around that experience, it lacks FaceID, a dedicated Camera Control button, and advanced camera hardware included with the concurrent iPhone 18 Pro lineup.

Missing Authentication and Exterior Controls on the iPhone Duo

The most notable omission for users switching to the iPhone Duo is the complete lack of a FaceID array for facial recognition. Instead, owners must authenticate using fingerprints or passwords via a TouchID sensor embedded in the power button, mirroring implementations seen on folding devices from Samsung and other manufacturers.

The iPhone Duo also drops the Camera Control button located on the side rail of traditional iPhones. Engadget reported that while the capacitive two-stage shutter button allows users to change camera settings on the fly, its absence on the Duo—combined with less capable cameras—suggests Apple is positioning the folding device primarily as a media consumption tool rather than a professional creative instrument.

Hardware and Software Downgrades in the Camera Arrays

The iPhone Duo incorporates three distinct camera systems, yet every setup involves significant compromises compared to the iPhone 18 Pro. The rear panel houses two 48-megapixel wide and ultrawide modules, but leaves out the periscope telephoto lens, the mechanical aperture, and the LiDAR scanner included on slab-shaped models.

On the exterior cover, a 12-megapixel selfie shooter replaces the 18-megapixel camera found on the iPhone 18 Pro. Meanwhile, the interior folding display features an under-display FaceTime camera, though Apple has declined to specify its megapixel count. Similar under-display technologies used by competitors like Samsung have historically suffered from reduced picture quality due to a layer of pixels positioned over the lens.

Software features are similarly limited. The Duo omits the new Pro Controls announced for the iPhone 18 Pro, which let users manually adjust shutter speed and aperture. ProRAW shooting capabilities, spatial photos, and spatial videos are also absent from the folding device.

iPhone Duo Compromises Affect Professional Photographers

These compromises mean the iPhone Duo will not fit every buyer’s workflow, despite being Apple’s most exciting hardware launch in over a decade. Consumers who prioritize professional-grade photography, biometric facial recognition, or advanced manual camera adjustments may find the device falls short of expectations.

For casual users who primarily capture photos for personal use and social media, the missing zoom lens and lower-resolution selfies will likely go unnoticed. However, avid mobile photographers and users accustomed to FaceID should evaluate whether the folding form factor justifies the compromises and the $2,000 price tag before making a purchase.