Xiaomi 18 Fold vs Samsung Galaxy Z Fold 8 Ultra
90
out of 100
VS
87
out of 100
Here we compared two flagship smartphones: the 7.58-inch Xiaomi 18 Fold (with XRing O3) that was released on September 7, 2026, against the Samsung Galaxy Z Fold 8 Ultra, which is powered by Qualcomm Snapdragon 8 Elite Gen 5 and came out 1 month before. On this page, you will find tests, full specs, strengths, and weaknesses of each of the devices.
Select the amount of RAM to evaluate performance and value for money more precisely
Key differences
Reasons to consider the Xiaomi 18 Fold
- Comes with 1000 mAh larger battery capacity: 6000 vs 5000 mAh
- 51% better performance in AnTuTu Benchmark (5228K versus 3453K)
- The rear camera has a 3.5x optical zoom
- Waterproof body (IP59 classification)
- Supports higher wattage charging (67W versus 45W)
- Has 2 SIM card slots
- Better grip in hands β the body is 40.6 mm narrower
- Faster storage type - UFS 4.1 versus UFS 4.0
- CPU with a higher amount of cores (+2)
- Has a built-in infrared port
Reasons to consider the Samsung Galaxy Z Fold 8 Ultra
- Has a 0.42 inch larger screen size
- 10% higher pixel density (422 vs 382 PPI)
- Ready for eSIM technology
Review
Display
Screen quality, color accuracy, brightness
Camera
Photo and video recording quality
Performance
CPU and memory performance (apps, system)
Gaming
Capabilities for playing modern games
Battery
Battery life, charging type and speed
Connectivity
Networks, ports, data transmission
Scores with a red asterisk (*) are approximate and may change in the future as we gather more data.
Select your primary usage scenario to get a more accurate NanoReview Score
Value for money (Beta)
Tests and specifications
Comparison table of technical specifications and testsDisplay
| Type | AMOLED | Dynamic AMOLED |
| Size | 7.58 inches | 8 inches |
| Resolution | 2364 x 1672 pixels | 2256 x 2504 pixels |
| Aspect ratio | 3:2 | - |
| PPI | 382 ppi | 422 ppi |
| Refresh rate | 120 Hz | 120 Hz |
| Adaptive refresh rate | Yes (1-120 Hz) | Yes (1-120 Hz) |
| Max rated brightness in HDR | 4000 nits | 3000 nits |
| HDR support | Yes, Dolby Vision | Yes, HDR10+ |
| Screen protection | Xiaomi Dragon Crystal Glass 3 | Corning Gorilla Glass Ceramic 3 |
| Screen-to-body ratio | 88.7% | 90.1% |
| Display features | - DCI-P3 - Always-On Display - DC Dimming |
- DCI-P3 - Always-On Display |
| RGB color space | - | 97.9% |
| PWM | - | 240 Hz |
| Response time | - | 1 ms |
| Contrast | - | β Infinity |
Peak brightness test (auto)
Design and build
| Height | 163.8 mm (6.45 inches) | 143.2 mm (5.64 inches) |
| Width | 117.8 mm (4.64 inches) | 158.4 mm (6.24 inches) |
| Thickness | 5.02 mm (0.2 inches) | 4.1 mm (0.16 inches) |
| Weight | 219 g (7.72 oz) | 215 g (7.58 oz) |
| Waterproof | IP59 | IP48 |
| Advanced cooling | Vapor chamber | Vapor chamber |
| Rear material | Glass | Glass |
| Frame material | Metal | Metal |
| Colors | Silver, Gray, Red, Rose gold | White, Gray, Purple |
| Fingerprint scanner | Yes, in-button | Yes, in-button |
Screen-to-body ratio
Performance
| Chipset | XRing O3 | Qualcomm Snapdragon 8 Elite Gen 5 |
| Max clock | 4350 MHz | 4740 MHz |
| CPU cores | 10 (2 + 4 + 4) | 8 (2 + 6) |
| Architecture | - 4 cores at 3.15 GHz: C1-Pro - 4 cores at 3.68 GHz: C1-Premium - 2 cores at 4.35 GHz: C1-Ultra |
- 6 cores at 3.63 GHz: Oryon Gen 3 Performance - 2 cores at 4.74 GHz: Oryon Gen 3 Prime |
| L3 cache | 16 MB | 12 MB |
| Manufacturing | TSMC | TSMC |
| Lithography process | 3 nanometers | 3 nanometers |
| Neural processor (NPU) | Yes | Hexagon |
| Graphics | Mali-G2 Ultra NX MP16 | Adreno 840 |
| GPU shading units | 2048 | 1536 |
| GPU clock | 1600 MHz | 1300 MHz |
| FLOPS | ~6554 GFLOPS | ~3993.6 GFLOPS |
Benchmarks
Geekbench 6 (Single-Core)
Geekbench 6 (Multi-Core)
Compute Score (GPU)
| Compute Score (GPU) | 34901 | 28320 |
| Single-core score | 3636 | 3681 |
| Multi-core score | 13491 | 10934 |
AnTuTu Benchmark 11
| CPU | 1359147 | 1070366 |
| GPU | 2143582 | 1285880 |
| Memory | 941063 | 407835 |
| UX | 784222 | 689917 |
| Total score | 5228014 | 3453998 |
| Samples | Less than 3 | Less than 3 |
AnTuTu 11 Ranking List (2nd and 51st place)
Recent User Tests
Xiaomi 18 Fold
| Date | Benchmark | Result |
|---|---|---|
| π 2026-09-23 -> manvancongggg | AnTuTu 12 | 4862080 |
Samsung Galaxy Z Fold 8 Ultra
| Date | Benchmark | Result |
|---|---|---|
| π 2026-09-26 (JJJ) | AnTuTu 12 | 3290752 |
| π 2026-08-25 (erosado-pr) | AnTuTu 11 | 4017190 |
Memory
| RAM size | 12 GB | 12 GB |
| Memory type | LPDDR5X | LPDDR5X |
| Memory clock | - | 5300 MHz |
| Channels | 4 | 4 |
| Storage size | 256 GB | 256 GB |
| Storage type | UFS 4.1 | UFS 4.0 |
| Memory card | No | No |
Software
| Operating system | Android 17 | Android 17 |
| ROM | HyperOS 4 | One UI 9 |
| OS updates | - | 7 years |
| Security updates | - | 7 years |
Battery
| Capacity | 6000 mAh | 5000 mAh |
| Max charge power | 67 W | 45 W |
| Battery type | Silicon-Carbon (Si/C) | Silicon-Carbon (Si/C) |
| Replaceable | No | No |
| Wireless charging | Yes (50 W) | Yes (20 W) |
| Reverse charging | Yes, (wireless) | Yes, (wireless) |
| Bypass charging | Yes | Yes |
| Fast charging | Yes | Yes (71% in 30 min) |
| Full charging time | - | 1:00 hr |
| Web browsing | - | 08:24 hr |
| Watching video | - | 18:11 hr |
| Gaming | - | 05:07 hr |
| Standby | - | 128 hr |
General battery life
Smartphones With Long Battery Life (#150th place)
Main camera
| Matrix | 200 megapixels | 200 megapixels |
| Image resolution | - | 16320 x 12240 |
| Zoom | Optical, 3.5x | Optical, 3x |
| Flash | - | LED |
| Stabilization | Optical | Optical |
| 8K video recording | - | Up to 30FPS |
| 4K video recording | - | Up to 120FPS |
| 1080p video recording | - | Up to 240FPS |
| Angle of widest lens | - | 120Β° |
| Lenses | 1) Standard: 200 MP 2) Telephoto: 50 MP 3) Ultrawide: 50 MP |
1) Standard: 200 MP 2) Telephoto: 10 MP 3) Ultrawide: 50 MP |
| Camera features | - | - Bokeh mode - Pro mode - RAW support |
| Image resolution | 200 MP | 200 MP |
| Aperture | f/1.7 | f/1.7 |
| Focal length | 23 mm | 24 mm |
| Sensor | Samsung ISOCELL HP5 | Samsung ISOCELL HP2 |
| Sensor size | 1/1.56" (β 0.64 inch) | 1/1.3" (β 0.77 inch) |
| Pixel size | 0.5 micron | 0.6 micron |
| Autofocus | Laser autofocus | Phase autofocus |
| Stabilization | Optical | Optical |
| Image resolution | 50 MP | 10 MP |
| Aperture | f/2.8 | f/2.4 |
| Focal length | 80 mm | 67 mm |
| Sensor | Samsung S5KJN5 | Samsung S5K3K1 |
| Sensor size | 1/2.76" (β 0.36 inch) | 1/3.94" (β 0.25 inch) |
| Pixel size | 0.64 micron | 1 micron |
| Stabilization | Optical | Optical |
| Image resolution | 50 MP | 50 MP |
| Aperture | f/2.4 | f/1.9 |
| Sensor | Omnivision OV50M | - |
| Sensor size | 1/2.76" (β 0.36 inch) | 1/2.5" (β 0.4 inch) |
| Pixel size | 0.61 micron | 0.7 micron |
| Stabilization | Digital | Digital |
Selfie camera
| Megapixels | 16 megapixels | 10 megapixels |
| Image resolution | - | 3648 x 2736 |
| Aperture | f/2.2 | f/2.2 |
| Focal length | 21 mm | 24 mm |
| Sensor | - | Sony IMX374 |
| Sensor size | - | 1/3.0" (β 0.33 inch) |
| Pixel size | - | 1.12 micron |
| Autofocus | - | No |
| Stabilization | Digital | Digital |
| Video resolution | - | 2160p (4K) at 60 FPS |
| Additional lens | 16 MP, f/21 | 10 MP, Sony IMX374, f/24, 1/3.0" |
| Depth sensor (TOF 3D) | No | No |
Connectivity
| Wi-Fi standard | Wi-Fi 7 (802.11 a/b/g/n/ac/ax/be) | Wi-Fi 7 (802.11 a/b/g/n/ac/ax/be) |
| Wi-Fi features | - Dual Band - Wi-Fi MiMO - Wi-Fi Direct - Wi-Fi Hotspot - Wi-Fi Display |
- Dual Band - Wi-Fi MiMO - Wi-Fi Direct - Wi-Fi Hotspot - Wi-Fi Display |
| Bluetooth version | 6.0 | 6.0 |
| Bluetooth features | LE | LE |
| USB type | USB Type-C | USB Type-C |
| USB version | 3.2 | 3.2 |
| USB features | - Charging - USB-Storage mode - OTG |
- Charging - USB-Storage mode - OTG |
| DisplayPort | Yes | Yes |
| GPS | GPS, GLONASS, Beidou, Galileo | GPS, GLONASS, Beidou, Galileo, QZSS |
| NFC* | Yes | Yes |
| Infrared port | Yes | No |
| Number of SIM* | 2 | 1 |
| Type of SIM card | Nano | Nano |
| Multi SIM mode | Standby | Standby |
| eSIM support* | No | Yes |
| Hybrid slot | No | No |
| 5G support | Yes | Yes |
Sound
| Speakers | Stereo | Stereo |
| Headphone audio jack | No | No |
| FM radio | No | No |
| Dolby Atmos | Yes | Yes |
Speakers test
Max loudness
Other
| Category | Flagship | Flagship |
| Announced | September 2026 | July 2026 |
| Release date | September 2026 | July 2026 |
| Launch price (MSRP) | $1640 | - |
| SAR (head) | - | 0.82 W/kg |
| SAR (body) | - | 1.17 W/kg |
| Sensors | - Proximity sensor - Gyroscope - Accelerometer - Ambient light sensor - Compass - Fingerprint |
- Hall-effect sensor - Barometer - Proximity sensor - Gyroscope - Accelerometer - Ambient light sensor - Compass - Fingerprint |
| Bundled charger | Yes, 67 W | Not included |
*Disclaimer! NFC, GSM network support, and some other specs can be different depending on the country.
Conclusion
These smartphones have a lot in common, but we would recommend the Xiaomi 18 Fold. It has a better gaming and battery life.
Cast your vote
Total votes: 19