iPhone Duo vs Galaxy Z Fold 8: Which Foldable Should You Buy?

After seven years of watching Samsung build folding phones, Apple finally has one of its own. The iPhone Duo starts at $1,999, and it goes straight up against the $1,899.99 Galaxy Z Fold 8. Same screen size, nearly the same shape, very different strengths. So which one should you spend your money on?

The iPhone Duo went on sale on October 23, 2026, while the Galaxy Z Fold 8 has been available since August. Both use the wider, passport-style shape that opens into a 7.6-inch screen with a near-tablet 4:3 feel.

We went through published lab tests, reviews, and Apple’s statements on the cracked-screen reports to compare them on what matters: price, design, battery, cameras, software, and whether you can even buy one right now.

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iPhone Duo vs Galaxy Z Fold 8: Quick Verdict

The short version: the Duo is the stronger phone on hardware, and the Fold 8 is the more comfortable, more flexible, and easier-to-get foldable. If you’re deep in Apple’s ecosystem, that may settle it already, since moving between iOS and Android is a bigger change than any spec on this page.

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Price and Availability

At the same storage level, the iPhone Duo costs about $100 more at list price.

The real gap can be bigger than that. Samsung’s phone has been out for months, so retailers discount it: GSMArena saw it selling for $1,649 around the time the Duo was announced. Just read the fine print on carrier deals, since many depend on a trade-in or long-term bill credits.

Then there’s supply. Tom’s Guide reports that the Duo is sold out across carriers and retailers, with the earliest delivery at the end of November and most estimates in late December or January. The Fold 8 is readily available.

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Specs Compared

Apple doesn’t publish battery capacities, so the Duo’s figure comes from reporting rather than Apple’s spec sheet. Keep that in mind when you compare the two numbers.

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Design and Comfort: Samsung’s Clearest Win

This is the difference you’ll notice first. The Duo weighs 254 grams, which Tom’s Guide says makes it the heaviest iPhone Apple has ever made. The Fold 8 weighs just 201 grams. That 53-gram gap matters on a phone you’ll often hold in one hand with its screen folded shut.

The Fold 8 is also thinner, at 4.5mm open and 9.7mm folded, compared with 5.2mm and 11.3mm for the Duo. Apple counters with a titanium frame where Samsung uses aluminum, and a stronger IP68 rating. That rating is a real advantage: the Duo is fully sealed against dust, while the Fold 8’s IP48 only protects against larger particles. Both can handle water.

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Displays

On paper, these screens are very close. Both are 7.6 inches with a 1–120Hz refresh rate. The differences come down to finish and layout:

• Glare and color: The Duo’s nano-texture finish reduces reflections and makes the crease harder to see, but Tom’s Guide found it doesn’t have the color saturation and contrast of Samsung’s display.
• Brightness: In the same testing, the Fold 8 peaked at 2,649 nits and the Duo at 2,558. You’re unlikely to notice that gap.
• Inner camera: Apple hides it under the display for a cleaner look, but it’s meant for FaceTime and video calls, not selfies. Samsung uses a small hole-punch.
• Cover screen: Samsung’s is slightly bigger at 5.5 inches, and its sharper corners give apps a bit more room.

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Performance and Battery: Apple’s Clearest Win

The A20 Pro is simply faster. In Tom’s Guide’s testing, the Duo scored 4,007 single-core and 11,363 multi-core in Geekbench 7, compared with 2,978 and 9,811 for the Fold 8. In 3DMark’s Solar Bay Unlimited graphics test, the Duo averaged 62.3 fps to Samsung’s 47.35 fps. The Fold 8 only edged ahead in on-device AI, and only slightly.

Battery life tells a similar story. Running side by side in Tom’s Guide’s new battery test, the Duo lasted 13 hours and 20 minutes against 10 hours and 6 minutes for the Fold 8. Other tests are kinder to Samsung: GSMArena measured an Active Use score of 13:59 for the Fold 8. Those results use different methods, so don’t compare them directly, but the head-to-head result favors Apple.

Charging is close to a tie. Even with a higher 60W rating against Samsung’s 45W, the Duo reached 42% in 15 minutes while the Fold 8 reached 43%. The Duo does charge faster wirelessly at 25W, and the Fold 8 lacks built-in magnets for Qi2 or MagSafe-style accessories.

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Cameras

Both phones skip a telephoto lens, which is a real compromise at this price. You get a main and an ultrawide camera on each, 48MP on the Duo and 50MP on the Fold 8.

Tom’s Guide gave the overall camera win to the Duo. Its photos looked more lifelike and held up better in low light, while the Fold 8’s tended to look brighter but washed out. The exception is long-range zoom: at 10x, the Duo looked noticeably blurrier. Samsung also has the edge in video resolution, recording at up to 8K 30fps.

If you came from a phone with a good zoom camera, like the iPhone 17 Pro Max, you’ll miss it on either of these. That’s the strongest argument for looking at the Fold 8 Ultra instead.

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Software and Multitasking

This is where Samsung’s years of foldable experience show. The Fold 8 runs up to three split-screen apps and as many as five floating windows, and it supports Samsung DeX, which gives you a desktop-style interface on an external display.

The Duo is more limited for now. It runs two apps side by side, its taskbar is pinned to the right side of the screen, and there’s no desktop mode. Many apps still need updates to make full use of the larger screen, although Apple says developers are moving quickly. Apple’s advantage is everything around the phone: iMessage, your Mac, your Apple Watch, and your existing apps and purchases.

On AI, the Fold 8 pairs Galaxy AI with Google Gemini, including an advanced Circle to Search. The Duo gets Siri AI and iOS 27’s photo tools. If you’re weighing Google’s assistant, our Gemini vs Google Assistant comparison explains how the two differ.

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The Cracked-Screen Issue: Should You Worry?

You can’t buy a Duo right now without hearing about “Crackgate.” Soon after launch, some owners reported cracks in the inner display along the hinge, often after a stuck feeling or a popping noise.

Apple has acknowledged the problem. In a statement to MacRumors, it said:

Here’s what we know so far:

• It’s real, but the scale is unclear. Apple says it’s a small number of units and hasn’t shared figures. Some images online are AI-generated fakes, which makes the true scope harder to judge.
• It seems to appear early. According to Apple, it shows up shortly after purchase and isn’t something most owners need to worry about developing over time.
• The cause isn’t confirmed. iFixit suspects a center support bar in the hinge that may not retract properly. Bloomberg’s Mark Gurman, as summarized by MacDailyNews, suspects a faulty batch of a hinge component.
• Replacement is free, but may take a while. 9to5Mac reports that you don’t need AppleCare+ for this replacement, and that carrier customers should contact AppleCare directly. Limited stock means some owners are waiting.

Samsung’s foldables aren’t immune to hinge and screen wear either, and neither phone’s rating guarantees that a folding display survives years of rough use. Whichever you choose, we’d seriously consider adding a protection plan, and we’d test the hinge and screen carefully while you’re still inside your return window.

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So, Which Should You Buy?

Buy the iPhone Duo if…

• You already use an iPhone and don’t want to leave iOS.
• Battery life and raw speed matter most to you.
• You want better low-light photos and Apple Pencil support.
• You’re comfortable waiting for stock and buying a first-generation Apple foldable.

Buy the Galaxy Z Fold 8 if…

• You want the thinnest, lightest foldable you can comfortably use one-handed.
• You’ll use it as a work device with split-screen apps, floating windows, and DeX.
• You want a more mature foldable you can buy today, possibly at a discount.
• You still want a physical SIM slot.

Also weighing Apple’s other new phones? Our guide to the iPhone 18 Pro Max stuck in SOS covers a carrier problem worth knowing about. And if you’re moving between platforms, our explainer on RCS messaging covers what texting looks like between iPhone and Android.

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Final Thoughts

For a first attempt, the iPhone Duo is impressive. It beats the Fold 8 on performance, battery life, and overall photo quality, but it’s also heavier, more expensive, and hard to find, with an unresolved hinge question hanging over its launch. The Galaxy Z Fold 8 is the better buy for most people who aren’t tied to Apple. If you are tied to Apple, the Duo is well worth considering, though it makes sense to wait for stock to improve and for Apple to explain the cracking issue.

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