iPhone Duo marks Apple’s debut in foldable phones

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Apple used its first autumn hardware event under new chief executive John Ternus, held on 9 September 2026 and billed as 'Surprise and Shine', to introduce its long-rumoured foldable handset, the iPhone Duo, alongside the iPhone 18 Pro and Pro Max, updated Apple Watch models and new AirPods. The Duo is Apple's inaugural entry into a foldable-phone category that rivals have occupied for years, pairing a 5.4-inch outer display with a 7.6-inch inner screen that Apple says draws inspiration from the iPad. The inner panel uses an under-display front camera to preserve an uninterrupted screen, while the rear carries a 48-megapixel main sensor and a 48-megapixel ultra-wide lens with 2x optical zoom. Apple quotes battery life of up to 31 hours of video playback from the inner screen and up to 44 hours from the outer one. The device starts at $1,999 for 256GB, comes in two finishes, opens for pre-order on 16 October and reaches shops a week later on 23 October.

Much of Apple's pitch centred on build quality and durability, areas where folding phones have traditionally struggled. The hinge, described as containing more than 100 precision-engineered parts, is built around a Grade 5 aluminium or titanium structure depending on the report, and the handset carries an IP68 dust and water-resistance rating, a notably higher standard than some rival folding phones currently achieve. The inner display uses a nano-texture, matte finish intended to cut reflections and disguise the crease along its centre, which reviewers who have handled the device describe as faint and more easily felt than seen. Practical touches include a side-mounted power button with Touch ID rather than Face ID, a dedicated camera button, a volume rocker positioned for use in both portrait and landscape orientations, and sensors that recognise partial folds to support tent and tabletop viewing modes. Apple has also reworked iOS for the wider unfolded canvas, shifting the dock and other navigation elements to one side of the screen to keep them within thumb's reach. Hands-on accounts note the phone is comparatively heavy and thick at roughly 254 grams and 11.3mm when folded.

Apple positioned the Duo explicitly against Samsung, whose Galaxy Z Fold 8 launched the previous month and adopts a similarly short, wide 'passport-style' shape rather than the tall, narrow form Samsung used in earlier generations. Ternus reportedly criticised other foldables as feeling like two phones joined together rather than a single purpose-built device, though some observers felt the Duo's execution did not fully bear that claim out. On paper the two phones are closely matched: both use 7.6-inch inner and roughly 5.4 to 5.5-inch outer OLED panels at 120Hz, both add titanium reinforcement beneath the folding layers, and Samsung, which also manufactures the folding OLED panels used in the Duo, supplies an anti-reflective coating comparable to the finish Apple describes as nano-texture. Samsung has said its Z Fold 8 and the larger Z Fold 8 Ultra are outselling last year's Fold 7 by around 30% in their opening month, a sign of renewed appetite in a category that analysts at Counterpoint Research say still accounts for only about 1.6% of global smartphone sales.

Coverage of the Pro-line and other announcements added further context to the event: the iPhone 18 Pro and Pro Max keep a familiar design but gain a variable-aperture 48-megapixel main camera with new manual photography controls, Dolby HDR Vision video and expanded 'Photographic Styles' editing, with the Pro Max priced $100 higher than its predecessor at $1,299 and both models arriving 18 September. Reaction to the Duo itself was broadly positive but not uncritical; one hands-on account praised the folding animation and hinge feel while wishing for a third rear camera, and reviewers cautioned that claims about hinge longevity and the IP68 rating should be treated cautiously until independent teardowns and long-term use confirm them, noting that Samsung's hinge remains a weak point even after eight generations. Given the roughly $1,999 starting price, several outlets suggested that an extended warranty or care plan would be a sensible addition for buyers.

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