Samsung Galaxy Z Fold 8 Ultra

Samsung's Galaxy Z Fold 8 Ultra is the top of the company's book-style foldable line — a phone that opens into an 8-inch tablet and asks $2,099.99 for the privilege. It's built for people who want one device to cover reading, multitasking, and media on a large canvas, without carrying a slab phone that compromises on speed or cameras to get there.

Most of it works. Performance is genuinely fast, the rear cameras handle detail and high-contrast scenes well, and battery life on the big inner screen is longer than the 5,000 mAh capacity suggests. The weak spots include that the front cameras are mediocre, image quality falls apart at long zoom, wireless charging is slow, and sustained gaming performance drops off as the thin chassis heats up. It also has to compete with Samsung’s own cheaper Z Fold 8, which has a wider, passport-style form-factor.

Design

Folded, the Z Fold 8 Ultra measures 158.4 x 72.8 x 8.9 mm and weighs 215 grams. Unfolded it's 4.1 mm thick. That weight sits in the same range as large slab flagships, which is unusual for a device carrying two displays and a hinge. The frame is aluminum, the outer screen is covered in Gorilla Glass Victus Ceramic 3, and the back panel uses Gorilla Glass Victus 2. The port is USB-C 3.2.

The IP48 rating means the phone survives submersion to the rated depth, but the "4" is the catch: it's only protected against solid objects larger than 1 mm, not fine dust. Sand and grit remain a real hazard for the hinge, as with most foldables.

The inner display covers 90.5% of the unfolded body at a 10:9 aspect ratio, so bezels are thin for a foldable. The outer display runs a narrow 21:9 at 85.6% screen-to-body, keeping the folded phone usable one-handed. Bandicoot Lab doesn't formally test design or durability, so we can't speak to hinge longevity or how the phone holds up to drops.

Display

Inner

The inner display is an 8-inch LTPO AMOLED at 2256 x 2504 resolution, 422 pixels per inch, refreshing between 1 and 120Hz. Manual brightness tops out at 683 nits, which is adequate outdoors but not exceptional. HDR content pushes small highlights to 2,832 nits, though brightness stability across window sizes is 46.6%, meaning full-screen bright scenes render far dimmer than that peak. Once it's bright, it stays bright over time — sustained output over 30 minutes held at 98.6%, so long HDR sessions don't fade.

Tone mapping pushes highlights a bit brighter than content is mastered for, and the panel clips at roughly three quarters of the HDR input range. In practice, very bright highlight detail in HDR video merges together earlier than on a display that tracks the reference curve faithfully.

Color accuracy in the best mode is good, with errors small enough that most people won't spot them without a reference beside it. Gamut coverage is the odd result — sRGB is nearly complete at 99.6%, but P3 coverage reaches only 76.1%, so wide-gamut content loses some of its most saturated colors. Touch latency averaged 19.5 ms, which is unremarkable in either direction.

Outer

The outer display is a 6.5-inch LTPO AMOLED at 1080 x 2520, matching the inner panel's 422 PPI and 1 to 120Hz refresh range. In our testing it gets meaningfully brighter than the inner panel, which suits its role as the screen you use outdoors with the phone folded. Color accuracy is slightly worse than the inner display, though the difference is at the threshold of what's visible. Touch response is marginally quicker on the outer panel.

Performance

The Z Fold 8 Ultra runs a Qualcomm Snapdragon 8 Elite Gen 5 with 12GB or 16GB of RAM. CPU results are excellent, hitting 3,666 single-core and 10,878 multi-core in GeekBench 6, which puts it among the fastest phones we've tested for everyday responsiveness. App launches, multitasking across the big screen, and heavy workloads all benefit. Browser performance backs this up, with a Speedometer score of 45.1.

The GPU is a different story. Peak results are strong, but stability under the Wild Life Extreme stress test was 56.3%, and 52.6% in Solar Bay. The thin unfolded chassis has little thermal headroom, so extended gaming sessions will see frame rates drop well below where they start. Short sessions and casual games won't be affected, but a 40-minute stretch of a demanding title will be.

Camera

The rear camera system is reasonably strong. The device has a 200-megapixel main sensor, a 50-megapixel ultrawide, and a 10-megapixel 3x telephoto. Detail from the main and ultrawide lenses is high, and dynamic range across all three rear lenses is a genuine strength, with high-contrast scenes keeping shadow detail that many phones crush.

Sharpness falls off hard at the long end of the zoom range. Past 10x, detail degrades quickly, and the 30x maximum is usable for identifying a subject, not photographing one. Camera-focused slab flagships with dedicated long telephoto lenses hold up far better in this range. The front cameras are the other weak point, with modest detail and limited dynamic range on both.

Main

The main camera pairs a 200-megapixel, 1/1.3-inch sensor with a 24mm f/1.7 lens. Sharpness is high in bright and moderate light and drops noticeably in dim conditions, though results stay usable. Cropping in digitally toward 3x, where the telephoto takes over, detail softens gradually but cleanly. There's no point in the main lens's range where the image falls apart.

Color has a slight vivid push in daylight that reads as pleasant rather than exaggerated, and skin tones stay close to accurate in bright and moderate light. In dim, warm lighting, skin tones drift substantially and saturation drains out of the image. Dynamic range is strong — backlit and high-contrast scenes hold shadow detail well, though the brightest highlights still clip.

Ultrawide

The ultrawide is a 50-megapixel, 1/2.5-inch sensor at 14mm f/1.9, giving a 0.6x field of view. It's softer than the main lens but consistent, holding nearly the same detail in dim light as in bright, which is unusual for an ultrawide. Dynamic range matches the main camera, so wide landscape shots with bright skies retain depth.

Color leans cooler than the main lens across all lighting, and skin tones drift further from reference, so it's the weaker choice for group shots with people in frame.

Telephoto

The telephoto is a 10-megapixel, 1/3.94-inch sensor at 67mm f/2.4, with a native zoom of 3x. At its native length in good light it delivers respectable detail, and dynamic range holds up well. In dim light it softens considerably, as expected from a sensor this small.

This lens carries the entire zoom range from 3x to 30x. Detail holds acceptably through the mid-single digits, then declines steadily. By 10x results are soft, and beyond that they're documentation-grade. The cool shift under warm lighting is most pronounced on this lens.

Front Inner

The inner front camera is 10 megapixels at 18mm f/2.2. Detail is modest and consistent across lighting. Skin tones are reasonable, with color accuracy declining in warm, dim light. Dynamic range is limited, so a bright window behind you will blow out.

Front Outer

The outer front camera is also 10 megapixels, at a tighter 24mm f/2.2. Detail is similar to the inner camera, and dynamic range is even more constrained, so it clips highlights aggressively in mixed lighting. Skin tones drift more than the inner camera's in bright and moderate light, with warm low light pulling colors noticeably off.

Battery

The 5,000 mAh battery is small relative to the hardware it powers, and the results are better than the capacity implies. Video playback ran 28 hours on the inner display and 31.1 hours on the outer. Either figure covers two days of typical mixed use, and the inner-screen result is strong given it's driving an 8-inch panel.

Web browsing is the weak spot. Our 5-hour browsing test drained 23%, which is heavier than average and suggests all-day browsing sessions on the big screen will eat the battery faster than video does. Gaming efficiency is good, with the one-hour stress test consuming 19%. Overnight standby drained 2%, so the phone loses little sitting idle.

Charging

Wired charging runs at 45W. Ten minutes on the cable delivered 31%, and 30 minutes reached 74%. That's a useful quick top-up, though slab flagships with 80W-plus charging finish well ahead of it.

Wireless charging at 20W is slow: 8% in 10 minutes and 20% in 30 minutes. Treat the wireless pad as an overnight or desk-side option, not a way to rescue a low battery before heading out.

Speaker

The speakers reach 77.4 dBA at maximum volume, which is loud, and they stay clean doing it, with little audible distortion or rattle even near the top of the range. High-frequency response is decent, so voices and dialogue come through clearly. Bass is thin. Music sounds bright and articulate but lacks low-end weight, which is typical for a chassis this slim.

Microphone

Microphone quality is above average. Frequency response is even across the voice range, so recordings and calls sound natural without the boxy or muffled character cheaper phones produce.

Other

The capacitive fingerprint sensor unlocked in an average of 154 ms, which is fast enough to feel instant. There's no hardware-based face unlock.

The USB-C 3.2 port delivered 326 MB/s reads and 287 MB/s writes in our transfer tests, quick enough to offload a large video library without a long wait. Storage comes in 256GB, 512GB, and 1TB configurations.

Conclusion

The Z Fold 8 Ultra makes a reasonable case that a foldable no longer has to trade away the fundamentals. The chipset is as fast as anything in a slab phone, the rear cameras produce genuinely good photos in most conditions, and battery life on an 8-inch screen runs two days. For a device this thin, that's a solid set of results.

What it doesn't do is match dedicated camera flagships at long zoom or in front-camera quality, and the charging system, particularly wireless, lags well behind phones costing half as much. At $2,099.99, you're paying for the form factor first. If the folding screen is the point, the rest of the phone holds up its end. If it isn't, a conventional flagship does several of these jobs better for considerably less.