iPhone Duo review: The future is foldable

Apple has released the iPhone Duo, its first foldable handset featuring a notebook-style design and an iPad-like inner display. While some reviewers describe it as a first-class device that solves common Android foldable flaws, others note it is heavy, expensive, and a messy first-generation product. Despite these risks, it represents the biggest change to the iPhone form factor in nearly twenty years, though iOS and third-party apps still require further optimization to match the hardware.