Samsung Galaxy Z Flip 3 vs Xiaomi 15 Ultra
The Verdict
Samsung's Galaxy Z Flip 3 pioneered foldable innovation with its 6.7-inch inner display and 120Hz refresh rate, though its 3300 mAh battery and modest 15W charging feel dated. Xiaomi's 15 Ultra dominates on nearly every specification front: it features a superior 1-inch 50MP main sensor, 200MP periscope telephoto, 8K video recording, and a massive 5810 mAh battery with 90W fast charging. Display brightness reaches 3200 nits versus Samsung's 1200. Performance advantages go to Xiaomi with Snapdragon 8 Elite, 16GB RAM, and up to 1TB storage. Samsung's appeal lies in its unique foldable form factor and established ecosystem, but Xiaomi 15 Ultra delivers dramatically better specifications, battery life, and camera versatility at the same price point. For traditional smartphone users, Xiaomi is the stronger choice.
Who Should Buy
Buy the Samsung Galaxy Z Flip 3 if…
- →First mainstream affordable foldable at $999
- →IPX8 water resistance on a foldable
- →Much larger cover screen than Flip 5G
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 Flip 3
Pros
- First mainstream affordable foldable at $999
- IPX8 water resistance on a foldable
- Much larger cover screen than Flip 5G
- Compact and stylish when folded
- 120Hz inner display
Cons
- Poor battery life with 3300 mAh
- Slow 15W charging
- Dual 12 MP cameras are basic
- Visible display crease
- Snapdragon 888 thermal issues
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 Flip 3 | Xiaomi 15 Ultra |
|---|---|---|
| Software | Android 11, One UI 3.1.1 | Android 15 (HyperOS 2) |
| Body | ||
| Weight | 183 g | 229 g |
| Material | Armor Aluminum frame, Gorilla Glass Victus | Titanium frame, Gorilla Glass Victus 2 |
| IP rating | IPX8 | IP68 |
| Dimensions | 166 x 72.2 x 6.9 mm (unfolded) | 161.1 x 75.2 x 9.17 mm |
| Camera | ||
| Main camera | 12 MP, f/1.8, OIS | 50 MP, f/1.63, OIS (1-inch sensor) |
| Front camera | 10 MP, f/2.4 | 32 MP, f/2.0 |
| Video | 4K@60fps | 8K@30fps, 4K@120fps |
| Ultrawide | 12 MP, f/2.2 | 50 MP, f/2.0, 128-degree |
| Telephoto | — | 200 MP, f/2.6, 5x periscope optical zoom, OIS |
| Memory | ||
| RAM | 8 GB | 16 GB |
| Storage options | 128 GB, 256 GB | 256 GB, 512 GB, 1 TB |
| Battery | ||
| Capacity | 3300 mAh | 5810 mAh |
| Charging | 15W wired | 90W wired |
| Wireless charging | 10W wireless | 50W wireless |
| Display | ||
| Size | 6.7 inches (inner), 1.9 inches (cover) | 6.73 inches |
| Type | Dynamic AMOLED 2X, foldable | LTPO AMOLED |
| Resolution | 2640 x 1080 (inner), 512 x 260 (cover) | 3200 x 1440 |
| Refresh rate | 120Hz (inner) | 1-120Hz |
| Brightness (nits) | 1200 | 3200 |
| Processor | ||
| CPU | Octa-core (1x2.84 GHz + 3x2.42 GHz + 4x1.8 GHz) | Octa-core (2x4.32 GHz + 6x3.53 GHz) |
| GPU | Adreno 660 | Adreno 830 |
| Chipset | Qualcomm Snapdragon 888 | Qualcomm Snapdragon 8 Elite |
| Connectivity | ||
| 5G | ||
| NFC | ||
| USB | USB-C 2.0 | USB-C 3.2 |
| Wi-Fi | Wi-Fi 6 | Wi-Fi 7 |
| Bluetooth | 5.2 | 5.4 |
Related Comparisons
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.
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