The iPhone Duo is expected to offer 31 to 44 hours of battery life, which are considered healthy numbers compared to previous iPhone Pro models.

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The A20 Pro chip, based on a new 2-nanometer process, is expected to deliver up to 40% faster performance, better battery efficiency, and run cooler, aided by a vapor chamber with triple the surface area.

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The iPhone 18 Pro Max is stated to achieve 45 hours of battery life due to efficiency improvements and a larger battery cell.

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The iPhone 18 Pro models feature a new A20 Pro chip, manufactured on a 2nm process with 50% more memory bandwidth, though real-world performance gains require further testing.

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Apple claims the iPhone 18 Pro will match the 17 Pro Max's battery life, and the 18 Pro Max will have the best battery life ever in an iPhone.

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The iPhone Duo replaces Face ID with a Touch ID fingerprint reader integrated into the power button on the right-hand rail.

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App layouts on the iPhone Duo are not uniformly identical to the iPad; some, like Settings and Photos, resemble iPad versions, while others, like the home screen and Camera app, are distinct.

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The iPhone Duo supports intuitive split-screen multitasking, app joining, drag-and-drop, and 'flex mode.' Its software boasts satisfying animations and seamless handoffs between various screen states.

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Due to its wide form factor, performing common tasks like reaching widgets or pulling down Siri with one hand on the iPhone Duo feels like an uncomfortable stretch.

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The iPhone Duo's inner under-display selfie camera has poor quality and is not truly invisible. Its rear camera setup lacks a telephoto lens and is equivalent to an older base iPhone model, not current Pro levels.

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The phone's frame is titanium, and the hinge incorporates titanium and carbon fiber, contributing to a uniquely solid feel. It also maintains an IP68 water and dust resistance rating.

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The iPhone Duo boasts an IP68 water and dust resistance rating, allowing it to be submerged in water, which is a promising durability feature for a foldable.

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The iPhone Duo is a $2,000 phone, placing it in a premium, niche market category.

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The international pricing for the iPhone Duo, including in Canada, Taiwan, and the UK, is significantly inflated compared to the US starting price.

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The iPhone Duo starts at $2,000, making it more expensive than comparable foldable phones and a significant investment.

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The iPhone Duo functions as an iPhone when closed and a small iPad when open, effectively combining the utility of both devices.

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For some users, the iPhone Duo can fill the role and space of an iPad mini.

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The iPhone Duo is likely not the ideal choice for users who specifically want the best camera hardware on their iPhone.

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Apple has specifically adapted the software experience for the iPhone Duo's unique foldable form factor, designing it from the ground up for a continuous experience.

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The 5.4-inch outer display of the iPhone Duo is bright, smooth, and sharp, comparable to Pro iPhone screens, but has a stockier feel.

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The inner display features a nano texture coating that makes it exceptionally anti-reflective, and the crease is barely visible or felt, making it the least noticeable among foldables.

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Unlike the anti-reflective inner screen, the iPhone Duo's front display appears to lack anti-reflective treatment, making it susceptible to glare.

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The iPhone Duo utilizes Touch ID integrated into the side button for authentication, which the reviewer considers a step back compared to the convenience and security of Face ID, leading to more user friction.

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The Dynamic Island on the iPhone 18 Pro models is approximately 35% narrower due to Face ID components being moved under the display, allowing for three live activities.

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The main camera on the iPhone 18 Pro features a new variable aperture lens with four stops for manual control, a significant upgrade from past implementations.

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The Dynamic Island on the iPhone 18 Pro is 25% smaller due to the Face ID camera being moved behind the display, allowing for more Live Activities.

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The iPhone Duo is a passport-shaped, book-style foldable with a 5.4-inch external display and a 7.6-inch internal display, essentially an iPhone when closed and an iPad mini when open.

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The iPhone Duo's internal display has a nano-texture matte coating and a stiff hinge design that effectively hides the crease, making it one of the least noticeable creases on a folding phone.

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The iPhone Duo features exceptionally smooth and quick animations, especially when switching between the inner and outer displays, enhancing the overall user experience.

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A notable design downside of the iPhone Duo is the asymmetrical cover screen display, which is rounded on the right and squared on the left.

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The iPhone Duo carves out a niche for Apple users seeking an innovative folda…