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iPhone Duo Video: 4K Dolby Vision at 120fps, Cinematic Mode and Dual Capture Explained
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iPhone Duo Video: 4K Dolby Vision at 120fps, Cinematic Mode and Dual Capture Explained

Mike Peterson · September 9, 2026

iPhone Duo records 4K Dolby Vision video at 24 to 120 fps on its rear cameras, with Cinematic mode, Dual Capture, 4K time-lapse, Center Stage on the rear camera and what Apple calls ultra-stabilized video. The press release adds that Cinematic effects can be applied at 60 fps after capture. The 120 fps ceiling is…

How to Charge iPhone Duo Fastest: 60W USB-C, 35W Plus MagSafe, and 25W Qi2 Compared
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How to Charge iPhone Duo Fastest: 60W USB-C, 35W Plus MagSafe, and 25W Qi2 Compared

Mike Peterson · September 9, 2026

The fastest way to charge iPhone Duo is a 60W USB-C adapter, which Apple says takes the phone to 50 percent in about 20 minutes. A 35W adapter paired with MagSafe gets there in about 30 minutes, and MagSafe, Qi2 and Qi-certified wireless chargers, all capped at 25W, also reach 50 percent in about 30…

iPhone Duo Has Touch ID, Not Face ID: How the Side Button Works Open and Closed
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iPhone Duo Has Touch ID, Not Face ID: How the Side Button Works Open and Closed

Mike Peterson · September 9, 2026

The iPhone Duo unlocks with Touch ID built into the side button, not Face ID. According to Apple’s tech specs, the sensor works whether the phone is open or closed, supports multiple fingers and can be paired with unlock with Apple Watch. The iPhone 18 Pro and 18 Pro Max, announced the same day, keep…

iPhone Duo Colors: Night Sky and Star White, and Why Apple Launched With Only Two
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iPhone Duo Colors: Night Sky and Star White, and Why Apple Launched With Only Two

Mike Peterson · September 9, 2026

The iPhone Duo comes in two colors, Night Sky and Star White, according to Apple’s product page and press release. That is half the choice Apple offers on the iPhone 18 Pro, which launched the same day in Black, Silver, Glacier and Burgundy. Early keynote coverage described the pair simply as dark blue and white;…

iPhone Duo Design: 5.2 mm Thin Open, Grade 5 Titanium, Ceramic Shield Both Sides and IP68
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iPhone Duo Design: 5.2 mm Thin Open, Grade 5 Titanium, Ceramic Shield Both Sides and IP68

Mike Peterson · September 9, 2026

The iPhone Duo is 5.2 mm thick when open and 11.3 mm when closed, weighs 254 g, and is built from a mirror-polished Grade 5 titanium frame with Ceramic Shield 2 on the front and Ceramic Shield on the back. It carries an IP68 rating to a maximum depth of 6 meters for up to…

iPhone Duo Displays Explained: 7.6-Inch Inner, 5.4-Inch Outer, 120Hz ProMotion and 3000 Nits
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iPhone Duo Displays Explained: 7.6-Inch Inner, 5.4-Inch Outer, 120Hz ProMotion and 3000 Nits

Mike Peterson · September 9, 2026

The iPhone Duo has two displays: a 7.6-inch folding inner display at 1878 by 2670 pixels and 430 ppi, and a 5.4-inch outer display at 1398 by 2034 pixels and 460 ppi. Both are Super Retina XDR OLED panels with ProMotion up to 120Hz, Always-On and 3000 nits peak outdoor brightness, according to Apple’s tech…

Who Should Buy iPhone Duo? 5 People It Is For and 5 It Is Not
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Who Should Buy iPhone Duo? 5 People It Is For and 5 It Is Not

Mike Peterson · September 9, 2026

iPhone Duo costs $1,999, folds open to a 7.6-inch display, and arrives October 23. That is $700 more than the iPhone 18 Pro Max and $800 more than the iPhone 18 Pro, so the question is not whether the Duo is good, it is whether it is for you. This is our analysis based on…

iPhone Duo vs iPhone 18 Pro Max: $700 More for the Fold, Spec by Spec
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iPhone Duo vs iPhone 18 Pro Max: $700 More for the Fold, Spec by Spec

Mike Peterson · September 9, 2026

iPhone Duo starts at $1,999 for 256GB, and the iPhone 18 Pro Max starts at $1,299 for the same storage. That $700 gap buys a 7.6-inch folding display, a titanium frame and Touch ID, and it costs you a dedicated telephoto lens, Face ID, a SIM tray and about five weeks of waiting. Both phones…

iPhone Duo Battery Life: Dual Batteries, 44 Hours Closed, 31 Hours Open, and the 60W Charging Catch
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iPhone Duo Battery Life: Dual Batteries, 44 Hours Closed, 31 Hours Open, and the 60W Charging Catch

Mike Peterson · September 9, 2026

iPhone Duo has two batteries, one in each half, and Apple rates it at up to 24 hours of typical use, up to 44 hours of video playback on the outer display and up to 31 hours on the inner display. Wired charging reaches 50 percent in about 20 minutes, but only with a 60W…

iPhone Duo’s Under-Display FaceTime Camera: What Apple Says It Can and Cannot Do
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iPhone Duo's Under-Display FaceTime Camera: What Apple Says It Can and Cannot Do

Mike Peterson · September 9, 2026

iPhone Duo hides a FaceTime camera under its 7.6-inch inner display. Apple’s tech specs give it an f/1.8 aperture and 1080p video at 30 to 60 fps, and that is close to everything Apple has published about it. It is the first iPhone with a camera behind the screen, and Apple has been careful about…

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