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Smartphone comparison

Samsung Galaxy Z Fold 8 Ultra vs Vivo X300 Ultra

Compare cameras, battery, screen and everyday features.

Compared products
01Selected
Samsung Galaxy Z Fold 8 Ultra 256GB

Samsung Galaxy Z Fold 8 Ultra 256GB

  • 215 g.
  • About 120 Hz display refresh rate.
  • About 8 inch screen.
  • Qualcomm SM8850-1-AD Snapdragon 8 Elite Gen 5 (3 nm) processor.
  • 12 GB RAM in this version.
KSh 195,000In Stock
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02
Vivo X300 Ultra

Vivo X300 Ultra

  • About 144 Hz display refresh rate.
  • About 6.82 inch screen.
  • Qualcomm SM8850-AC Snapdragon 8 Elite Gen 5 (3 nm) processor.
  • 16 GB RAM in this version.
  • 512 GB storage in this version.
KSh 200,000Out of Stock

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Google Pixel 11 Pro Fold 256GBKSh 192,000
Samsung Galaxy Z Fold 8KSh 185,000
Google Pixel 10 Pro FoldKSh 160,000
Samsung Galaxy Z Fold 7KSh 158,000
iPhone 18 Pro 256GBKSh 193,500
Oppo Find N6KSh 223,000
iPhone 18 Pro Max 256GBKSh 213,500
2 of 4 products

Our quick verdict

The Vivo X300 Ultra has a bigger battery (6,600 mAh) and a sharper screen, scrolls more smoothly (144 Hz), charges faster (100 W) and charges faster wirelessly (40 W), while the Samsung Galaxy Z Fold 8 Ultra runs newer Android 17 with 7 OS upgrades promised, has a larger 8-inch screen and is lighter (215 g) and slimmer.

Refresh

Samsung Galaxy Z Fold 8 Ultra
About 120 Hz display refresh rate
Vivo X300 Ultra
About 144 Hz display refresh rate

Display

Samsung Galaxy Z Fold 8 Ultra
About 8 inch screen
Vivo X300 Ultra
About 6.82 inch screen

Performance

Samsung Galaxy Z Fold 8 Ultra
Qualcomm SM8850-1-AD Snapdragon 8 Elite Gen 5 (3 nm) processor
Vivo X300 Ultra
Qualcomm SM8850-AC Snapdragon 8 Elite Gen 5 (3 nm) processor

Memory

Samsung Galaxy Z Fold 8 Ultra
12 GB RAM in this version
Vivo X300 Ultra
16 GB RAM in this version

Storage

Samsung Galaxy Z Fold 8 Ultra
256 GB storage in this version
Vivo X300 Ultra
512 GB storage in this version

Key differences

The main differences to help you choose.

Samsung Galaxy Z Fold 8 Ultra

  • Larger 8-inch screen (vs 6.82-inch).
  • Newer Android 17 (vs Android 16).
  • 7 OS upgrades promised.
  • Newer Bluetooth 6.0 (vs 5.4).
  • Lighter: 215 g (vs 232 g).
  • Slimmer: 4.1 mm thick (vs 8.2 mm).

Vivo X300 Ultra

  • Bigger battery: 6,600 mAh (vs 5,000 mAh).
  • Faster rated wired charging: 100 W (vs 45 W).
  • More memory: 16 GB RAM (vs 12 GB).
  • Smoother 144 Hz display (vs 120 Hz).
  • IP68 water and dust resistance (vs IP48).
  • Sharper screen: 510 ppi (vs 422 ppi).

What matters most to you?

Choose any priorities

How each product answers the questions buyers ask most. Tick a topic to add it, untick one to hide it.

More topicsFewer topics
6 priorities selected.
How each product answers the selected priorities
PrioritySamsung Galaxy Z Fold 8 UltraVivo X300 Ultra
Display8-inch OLED display, 120 Hz, 422 ppi6.82-inch OLED display, 144 Hz, 510 ppi
Camera200 MP main camera with OIS, plus a 3x telephoto camera200 MP main camera with OIS, plus a 3.7x telephoto camera
PerformanceQualcomm SM8850-1-AD Snapdragon 8 Elite Gen 5 processorQualcomm Snapdragon 8 Elite Gen 5 processor
Storage256 GB storage512 GB storage
Battery capacity5,000 mAh battery6,600 mAh battery
Charging45 W wired, 20 W wireless charging100 W wired, 40 W wireless charging

Detailed comparison

Explore the full specifications, section by section.

General

General specifications comparison
SpecificationSamsung Galaxy Z Fold 8 Ultra 256GBVivo X300 Ultra
BrandSamsungVivo
ModelGalaxy Z Fold8 UltraX300 Ultra
Announced2026, July 222026, March 30
Release statusAvailable. Released 2026, July 22Available. Released 2026, April 03
Model numbersSM-F976B, SM-F976B/DS, SM-F976U, SM-F976U1V2547A, V2547DA, V2536A, V2562
SAR1.10 W/kg (head)     1.25 W/kg (body)—
SAR EU0.82 W/kg (head)     1.17 W/kg (body)—

Design

Design specifications comparison
SpecificationSamsung Galaxy Z Fold 8 Ultra 256GBVivo X300 Ultra
DimensionsUnfolded: 158.4 x 143.2 x 4.1 mm Folded: 158.4 x 72.8 x 8.9 mm163 x 76.8 x 8.2 mm or 8.5 mm
Weight215 g (7.58 oz)232 g or 237 g (8.18 oz)
Build materialsGlass front (Gorilla Glass Victus Ceramic 3) (folded), plastic front (unfolded), glass back (Gorilla Glass Victus 2), aluminum frameGlass front, glass back, aluminum frame
Dimensions unfoldedUnfolded: 158.4 x 143.2 x 4.1 mm—
Dimensions foldedFolded: 158.4 x 72.8 x 8.9 mm—

Display

Display specifications comparison
SpecificationSamsung Galaxy Z Fold 8 Ultra 256GBVivo X300 Ultra
DisplayFoldable Dynamic LTPO AMOLED 2X, 120Hz, HDR10+, 3000 nits (peak); 8.0 inches, 204.4 cm2 (~90.1% screen-to-body ratio)6.82 inches, 113.0 cm2 (~90.3% screen-to-body ratio); LTPO AMOLED, 1B colors, 144Hz, 2160Hz PWM, Dolby Vision, HDR10+, HDR Vivid
Inner displayFoldable Dynamic LTPO AMOLED 2X, 120Hz, HDR10+, 3000 nits (peak); 8.0 inches, 204.4 cm2 (~90.1% screen-to-body ratio); 2256 x 2504 pixels (~422 ppi density)—
Outer displayDynamic LTPO AMOLED 2X, 120Hz, Corning Gorilla Glass Ceramic 3 6.5 inches, 1080 x 2520 pixels, 422 ppi—
Screen resolution2256 x 2504 pixels (~422 ppi density)1440 x 3168 pixels (~510 ppi density)
Display featuresFoldable Dynamic LTPO AMOLED 2X, 120Hz, HDR10+, 3000 nits (peak) Anti-reflective coating Flex Titanium technologyLTPO AMOLED, 1B colors, 144Hz, 2160Hz PWM, Dolby Vision, HDR10+, HDR Vivid; Ultra HDR image support
Display protection—Armor glass

Performance

Performance specifications comparison
SpecificationSamsung Galaxy Z Fold 8 Ultra 256GBVivo X300 Ultra
ProcessorQualcomm SM8850-1-AD Snapdragon 8 Elite Gen 5 (3 nm)Qualcomm SM8850-AC Snapdragon 8 Elite Gen 5 (3 nm)
CPUOcta-core (2x4.74 GHz Oryon V3 Phoenix L + 6x3.62 GHz Oryon V3 Phoenix M)Octa-core (2x4.6 GHz Oryon V3 Phoenix L + 6x3.62 GHz Oryon V3 Phoenix M)
GPUAdreno 840 (1.3GHz)Adreno 840

Memory & Storage

Memory & Storage specifications comparison
SpecificationSamsung Galaxy Z Fold 8 Ultra 256GBVivo X300 Ultra
RAM12GB16GB
Storage256GB512GB
Storage technologyUFS 4.xUFS 4.1
Expandable storageNoNo
Memory configurations256GB 12GB RAM, 512GB 12GB RAM, 512GB 16GB RAM, 1TB 16GB RAM256GB 12GB RAM, 512GB 12GB RAM, 512GB 16GB RAM, 1TB 16GB RAM

Cameras

Cameras specifications comparison
SpecificationSamsung Galaxy Z Fold 8 Ultra 256GBVivo X300 Ultra
Rear camera200 MP, f/1.7, 23mm (wide), 1/1.3", 0.6µm, multi-directional PDAF, OIS 10 MP, f/2.4, 69mm (telephoto), 1/3.94", 1.0µm, PDAF (17cm - ∞), OIS, 3x optical zoom 50 MP, f/1.9, 120˚ (ultrawide), 1/2.51", 0.7µm, multi-directional PDAF200 MP, f/1.9, 35mm (wide), 1/1.12", 0.7µm, PDAF, gimbal OIS 200 MP, f/2.7, 85mm (periscope telephoto), 1/1.4", 0.56µm, multi-directional PDAF, OIS, 3.7x optical zoom, macro 3.4:1 50 MP, f/2.0, 14mm, 116˚ (ultrawide), 1/1.28", 1.22µm, dual pixel PDAF, OIS Optional add-on zoom lenses: 200mm, 2.35x optical zoom, OIS, Zeiss optics 400mm, 4.7x optical zoom, OIS, Zeiss optics
Front camera10 MP, f/2.2, 18mm (ultrawide), 1/3.52", 1.12µm50 MP, f/2.5, 24mm (wide), 1/2.76", 0.64µm, AF
Cover camera10 MP, f/2.2, 24mm (wide), 1/3.52", 1.12µm—
Rear camera featuresLED flash, HDR, panoramaLaser AF, color spectrum sensor, Zeiss optics, Zeiss T* lens coating, LED flash, panorama, HDR, 3D LUT import
Rear camera video8K@30fps, 4K@30/60/120fps, 1080p@30/60/120/240fps, 10-bit HDR, HDR10+, gyro-EIS, OIS8K@30fps, 4K@24/30/60/120fps (10-bit Log, Dolby Vision HDR), 1080p@30/60/120/240fps, gyro-EIS, HDR10+
Front camera featuresHDRHDR
Front camera video4K@30/60fps, 1080p@30/60fps, gyro-EIS4K@30/60fps, 1080p@30/60fps, gyro-EIS, HDR

Battery & Charging

Battery & Charging specifications comparison
SpecificationSamsung Galaxy Z Fold 8 Ultra 256GBVivo X300 Ultra
BatterySi/C Li-Ion 5000 mAhSi/C Li-Ion 6600 mAh (International) or 6400 mAh (Europe)
Charging45W wired, PD3.0, QC2.0, 67% in 30 min 20W wireless (Qi2.2) 4.5W reverse wireless100W wired, PD, PPS, QC, UFCS 40W wireless Reverse wired Reverse wireless
Wireless charging20W wireless (Qi2.2); 4.5W reverse wireless—
Reverse charging4.5W reverse wireless—

Software

Software specifications comparison
SpecificationSamsung Galaxy Z Fold 8 Ultra 256GBVivo X300 Ultra
Operating systemAndroid 17, up to 7 major OS updates, One UI 9Android 16, OriginOS 6

Network

Network specifications comparison
SpecificationSamsung Galaxy Z Fold 8 Ultra 256GBVivo X300 Ultra
NetworkGSM / HSPA / LTE / 5GGSM / HSPA / LTE / 5G
SIMNano-SIM + eSIM + eSIM (max 2 at a time)· Nano-SIM + Nano-SIM + eSIM (max 2 at a time) · Nano-SIM + Nano-SIM
2G bandsGSM 850 / 900 / 1800 / 1900GSM 850 / 900 / 1800 / 1900
3G bandsHSDPA 850 / 900 / 1700(AWS) / 1900 / 2100HSDPA 800 / 850 / 900 / 1700(AWS) / 1800 / 1900 / 2100
4G bands1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 38, 39, 40, 41, 66 - International; 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 29, 30, 38, 39, 40, 41, 48, 66, 71 - USA1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 34, 38, 39, 40, 41, 42, 43, 48, 66, 71 - Global; 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 25, 26, 28, 34, 38, 39, 40, 41, 42, 43, 48, 66 - China
5G bands1, 2, 3, 5, 7, 8, 12, 20, 25, 26, 28, 38, 40, 41, 66, 77, 78 SA/NSA/Sub6 - International; 1, 2, 3, 5, 7, 8, 12, 20, 25, 28, 38, 41, 66, 71, 77, 78, 257, 258, 260, 261 SA/NSA/Sub6/mmWave - USA1, 2, 3, 5, 7, 8, 12, 20, 25, 28, 38, 40, 41, 66, 71, 75, 77, 78, 79 SA/NSA - Global; 1, 2, 3, 5, 7, 8, 12, 18, 20, 25, 26, 28, 38, 40, 41, 48, 66, 77, 78, 79, 80, 81, 83, 84, 89 SA/NSA - China
Network speedHSPA, LTE, 5GHSPA, LTE, 5G

Connectivity

Connectivity specifications comparison
SpecificationSamsung Galaxy Z Fold 8 Ultra 256GBVivo X300 Ultra
NFCYesYes
Bluetooth6.0, A2DP, LE, aptX HD5.4, A2DP, LE, aptX HD, aptX Adaptive, aptX Lossless, LHDC 5
Wi-FiWi-Fi 802.11 a/b/g/n/ac/6e/7, tri-band, Wi-Fi DirectWi-Fi 802.11 a/b/g/n/ac/6/7, dual-band
PositioningGPS, GALILEO, GLONASS, BDS, QZSSGPS (L1+L5), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5), GLONASS
RadioNoNo
USBUSB Type-C 3.2, OTGUSB Type-C 3.2, OTG, DisplayPort
Ultra Wideband (UWB)Ultra Wideband (UWB) support—
Satellite features—Emergency SOS via satellite (calls, messages) - 16GB + 1TB model only
Infrared—Yes

Durability

Durability specifications comparison
SpecificationSamsung Galaxy Z Fold 8 Ultra 256GBVivo X300 Ultra
Water resistanceIP48 dust and water resistant (dust > 1mm; immersible up to 1.5m for 30 min) Advanced Armor AluminumIP68/IP69 dust tight and water resistant (immersible up to 1.5m for 30 min)

Features

Features specifications comparison
SpecificationSamsung Galaxy Z Fold 8 Ultra 256GBVivo X300 Ultra
SensorsFingerprint (side-mounted), accelerometer, gyro, proximity, compass, barometerFingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass
ColorsGraphite, Cream, Violet ShadowEclipse Black, Victory Green, Silver
Desktop modeSamsung DeX (desktop experience support)—

Audio

Audio specifications comparison
SpecificationSamsung Galaxy Z Fold 8 Ultra 256GBVivo X300 Ultra
LoudspeakersYes, with stereo speakersYes, with stereo speakers
3.5 mm headphone jackNoNo
Audio featuresHigh-bitrate audio support24-bit/192kHz Hi-Res audio

Tests

Tests specifications comparison
SpecificationSamsung Galaxy Z Fold 8 Ultra 256GBVivo X300 Ultra
PerformanceAnTuTu: 2160310 (v10), 2970196 (v11) GeekBench: 11124 (v6) 3DMark: 6772 (Wild Life Extreme)—
Display1432 nits max brightness (measured)—
Loudspeaker-29.3 LUFS (Average)—
BatteryActive use score 13:06h—
Performance benchmarks—AnTuTu: 2723497 (v10), 4085695 (v11) GeekBench: 11494 (v6) 3DMark: 7075 (Wild Life Extreme)
Measured display brightness—1935 nits max brightness (measured)
Measured loudspeaker loudness—-24.7 LUFS (Very good)
Active use battery score—Active use score 15:45h

EU label

EU label specifications comparison
SpecificationSamsung Galaxy Z Fold 8 Ultra 256GBVivo X300 Ultra
EnergyClass AClass B
Battery51:10h endurance, 1200 cycles56:53h endurance, 1200 cycles
Free fallClass A (210 falls)Class B (180 falls)
RepairabilityClass CClass C

Similarities

  • Both have optical image stabilisation.
  • Both support Wi-Fi 7.
  • Both have NFC.
  • Both have an aluminium frame.
  • Both have stereo speakers.
  • Both have OLED displays.

In summary

For most buyers the Vivo X300 Ultra is the better buy; the Samsung Galaxy Z Fold 8 Ultra makes sense if you want newer Android 17 with 7 OS upgrades promised.

Back to compared products ↑

In-stock alternatives

iPhone 18 Pro 256GBFor Samsung Galaxy Z Fold 8 Ultra 256GBiPhone 18 Pro 256GBView product ↗Google Pixel 11 Pro Fold 256GBFor Samsung Galaxy Z Fold 8 Ultra 256GBGoogle Pixel 11 Pro Fold 256GBView product ↗iPhone 18 Pro Max 256GBFor Vivo X300 UltraiPhone 18 Pro Max 256GBView product ↗

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