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App Store Connect screenshot sizes for 2026, including new iPhone Duo requirements

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App Store Connect currently requires at least one iPhone screenshot in the Dynamic Island medium-display slot, accepting 1206 x 2622 or 1179 x 2556 pixels in portrait. iPhone Duo, Apple's foldable model, has its own slot with separate sizes for its outer and inner displays. According to Apple's specifications page, iPhone Duo screenshots will be required from April 2027 for apps built with the iOS 27.1 SDK or later, a date Apple's October 5, 2026 developer note also reflects. Screenshots must be PNG, JPG or JPEG files without transparency and must match an accepted size exactly, as one-pixel differences are rejected. Developers are advised against stretching or misplacing images across slots, since the aspect ratios differ.

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