Early reviews praise iPhone Duo but flag key compromises

Apple’s first foldable iPhone, the iPhone Duo, has drawn broadly positive but qualified early reviews, with reviewers praising its design and large inner display while noting trade-offs in weight, cameras, unlocking and app compatibility. Apple says the device will be available to customers on October 23. Reviewers described the Duo as a polished first-generation foldable, but said its size and software require adjustment. The device opens from a 5.4-inch cover screen to a 7.6-inch inner display. Its matte screen surface was credited with reducing glare and making the central crease less noticeable, although reviewers differed on how clearly it showed video and how visible or palpable the crease remained. A recurring criticism was that many third-party apps do not yet use the inner display’s full width. Some appear in a narrow central area bordered by black bars, while others have been optimized for the larger screen. Reviewers said Apple’s own apps generally make fuller use of the display. Updates from app developers could address the compatibility issue, but no timeline for broad optimization was established. The Duo uses Touch ID in its side button instead of Face ID....