Review: Apple's iPhone Duo Foldable Smartphone

Apple entered the foldable segment with the iPhone Duo, featuring a passport-size format, a durable hinge, and an absence of a visible screen crease.

The device weighs the same as the iPhone 18 Pro Max and incorporates a side-mounted app dock that constricts front screen real estate during browsing.

Unlocking the device relies on a Touch ID power button rather than Face ID, while the folding inner screen provides a fluid, tablet-like experience.