Samsung Galaxy Z Fold 6 vs Xiaomi 15 Ultra
The Verdict
Two very different phones serving distinct purposes. Samsung's Galaxy Z Fold 6 offers a unique 7.6-inch foldable inner display, making it a productivity powerhouse for multitasking, but you're paying $900 more for that form factor while accepting real compromises: a modest 4400 mAh battery with slow 25W charging, an under-display selfie camera that lacks sharpness, and IP48 rather than full IP68 protection. Xiaomi's 15 Ultra, by contrast, is a straight-up camera beast. Its 1-inch main sensor, 200 MP periscope telephoto with 5x optical zoom, and 50 MP ultrawide represent a photography system that genuinely outclasses the Fold 6's cameras at every focal length. The Snapdragon 8 Elite chipset runs faster and cooler than the Fold's Snapdragon 8 Gen 3, the 5810 mAh battery charges at 90W wired and 50W wireless, and IP68 means you can actually submerge it without worry. At $999, the Xiaomi 15 Ultra delivers flagship-killer value. If you need the folding tablet experience and use Samsung's ecosystem deeply, the Fold 6 remains the best foldable available. For pure smartphone performance and especially photography, the 15 Ultra wins decisively.
Who Should Buy
Buy the Samsung Galaxy Z Fold 6 if…
- →Lighter and slimmer than the Z Fold 5
- →Improved 2600-nit displays inside and out
- →Snapdragon 8 Gen 3 for Galaxy performance
Buy the Xiaomi 15 Ultra if…
- →200MP periscope telephoto with 5x optical zoom rivals Galaxy S25 Ultra
- →1-inch main sensor with Leica optics produces stunning photos
- →Titanium frame gives a premium, durable build
Category Scores
Pros & Cons
Samsung Galaxy Z Fold 6
Pros
- Lighter and slimmer than the Z Fold 5
- Improved 2600-nit displays inside and out
- Snapdragon 8 Gen 3 for Galaxy performance
- Galaxy AI optimized for the foldable display
- Seven years of software support
Cons
- Very expensive at $1899
- Charging still capped at 25W
- Visible inner display crease remains
- Cameras lag behind the S24 Ultra
- IP48 rating (no dust protection)
Xiaomi 15 Ultra
Pros
- 200MP periscope telephoto with 5x optical zoom rivals Galaxy S25 Ultra
- 1-inch main sensor with Leica optics produces stunning photos
- Titanium frame gives a premium, durable build
- 4K@120fps video recording is industry-leading
- 90W fast charging and 50W wireless on a huge 5810 mAh battery
Cons
- Heavy at 229 g and thick at 9.17 mm
- Very expensive at $999 with limited global availability
- HyperOS software experience lags behind iOS and One UI
- Camera bump is extremely large
Full Specifications
| Spec | Samsung Galaxy Z Fold 6 | Xiaomi 15 Ultra |
|---|---|---|
| Software | Android 14, One UI 6.1.1 | Android 15 (HyperOS 2) |
| Body | ||
| Weight | 239 g | 229 g |
| Material | Armor Aluminum frame | Titanium frame, Gorilla Glass Victus 2 |
| IP rating | IP48 | IP68 |
| Dimensions | 153.5 x 132.6 x 5.6 mm unfolded | 161.1 x 75.2 x 9.17 mm |
| Camera | ||
| Main camera | 50 MP, f/1.8, OIS | 50 MP, f/1.63, OIS (1-inch sensor) |
| Front camera | 10 MP cover, 4 MP under-display | 32 MP, f/2.0 |
| Video | 8K@30fps, 4K@60fps | 8K@30fps, 4K@120fps |
| Telephoto | 10 MP 3x optical | 200 MP, f/2.6, 5x periscope optical zoom, OIS |
| Ultrawide | 12 MP, f/2.2 | 50 MP, f/2.0, 128-degree |
| Memory | ||
| RAM | 12 GB | 16 GB |
| Storage options | 256 GB, 512 GB, 1 TB | 256 GB, 512 GB, 1 TB |
| Battery | ||
| Capacity | 4400 mAh | 5810 mAh |
| Charging | 25W wired | 90W wired |
| Wireless charging | 15W | 50W wireless |
| Display | ||
| Size | 7.6 inches inner, 6.3 inches cover | 6.73 inches |
| Type | Dynamic AMOLED 2X LTPO | LTPO AMOLED |
| Resolution | 2160 x 1856 inner, 2376 x 968 cover | 3200 x 1440 |
| Refresh rate | 120Hz | 1-120Hz |
| Brightness (nits) | 2600 | 3200 |
| Processor | ||
| CPU | Octa-core (1x3.39 GHz + 5x3.1 GHz + 2x2.9 GHz) | Octa-core (2x4.32 GHz + 6x3.53 GHz) |
| GPU | Adreno 750 | Adreno 830 |
| Chipset | Snapdragon 8 Gen 3 for Galaxy | Qualcomm Snapdragon 8 Elite |
| Connectivity | ||
| 5G | ||
| NFC | ||
| USB | USB-C 3.2 | USB-C 3.2 |
| Wi-Fi | Wi-Fi 7 | Wi-Fi 7 |
| Bluetooth | 5.3 | 5.4 |
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This comparison is based on verified manufacturer specifications covering display, performance, camera, battery, and build quality. Scores are generated by analyzing specs across weighted categories on a 10-point scale. Learn more about our methodology.
Explore more in phones, see all Samsung products or all Xiaomi products. View full details for the Samsung Galaxy Z Fold 6 or the Xiaomi 15 Ultra.

