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- Open vs Mix Fold 4
OnePlus Open vs Xiaomi Mix Fold 4
What Open does better (5) and where Mix Fold 4 wins (16) — every spec side by side.
vs
7.8Display8.6
5.7Performance8.1
6.9Camera9.6
7.2Battery9.1
5.7Features7.4
Dimensions
Size comparison
OpenMix Fold 4
| Open | Mix Fold 4 | Difference | |
|---|---|---|---|
| Height | 153.4 mm | 159.4 mm | −6 mm |
| Width | 143.1 mm | 143.3 mm | −0.2 mm |
| Thickness | 5.8 mm | 4.6 mm | +1.2 mm |
| Weight | 239 g | 226 g | +13 g |
Drawn to the same scale from the official dimensions (front and side).
Why is Open better than Mix Fold 4?
- Storage (base)512 GB vs 256 GB2×
- 4K selfie videoYes · Mix Fold 4: No
- eSIMYes · Mix Fold 4: No
- Measured brightness1,238 nits vs 1,110 nits+12%
- Selfie camera20 MP vs 16 MP+25%
Why is Mix Fold 4 better than Open?
- AnTuTu score968,130 vs 1,991,6722.1×
- Geekbench 6 (multi-core)3,969 vs 6,630+67%
- Water resistance (IPx)IPx4 vs IPx82×
- Wireless chargingNo · Open: Yes
- Battery capacity4,805 mAh vs 5,100 mAh+6%
- Optical zoom3× vs 5×+67%
- Main camera48 MP vs 50 MP+4%
- Max video4K vs 8K
- Peak brightness2,800 nits vs 3,000 nits+7%
- Weight239 g vs 226 g+6%
- CPU frequency3.2 GHz vs 3.3 GHz+3%
- Screen size7.8″ vs 8″+2%
Specifications
Side by side
| Design | ||
| Weight | 239 g | 226 g |
| Thickness | 5.8 mm | 4.6 mm |
| Height | 153.4 mm | 159.4 mm |
| Width | 143.1 mm | 143.3 mm |
| Frame | Aluminium | Aluminium |
| Back | Glass | Glass |
| Ingress protection | IPX4 | IPX8 |
| Water resistance (IPx) | IPx4 | IPx8 |
| Glass protection | Gorilla Glass Victus | — |
| Colours | Emerald Dusk, Voyager Black, Apex Edition | Black, White, Blue |
| Display | ||
| Screen size | 7.8″ | 8″ |
| Panel | Foldable LTPO3 Flexi-fluid AMOLED | Foldable LTPO AMOLED |
| OLED panel | Yes | Yes |
| LTPO (adaptive 1–120 Hz) | Yes | Yes |
| Resolution (width) | 2,268 px | 2,224 px |
| Resolution (height) | 2,440 px | 2,488 px |
| Pixel density | 426 ppi | 418 ppi |
| Refresh rate | 120 Hz | 120 Hz |
| Peak brightness | 2,800 nits | 3,000 nits |
| Measured brightness | 1,238 nits | 1,110 nits |
| Screen-to-body ratio | 89.6% | 89.4% |
| HDR | Yes | Yes |
| Foldable | Yes | Yes |
| Performance | ||
| Chipset | Qualcomm SM8550-AB Snapdragon 8 Gen 2 | Qualcomm SM8650-AB Snapdragon 8 Gen 3 |
| Chip maker | Qualcomm | Qualcomm |
| Process | 4 nm | 4 nm |
| CPU cores | 8 | 8 |
| CPU frequency | 3.2 GHz | 3.3 GHz |
| GPU | Adreno 740 | Adreno 750 |
| AnTuTu score | 968,130 | 1,991,672 |
| Geekbench 6 (multi-core) | 3,969 | 6,630 |
| Memory | ||
| RAM | 16 GB | 16 GB |
| Storage (max) | 1,024 GB | 1,024 GB |
| Storage (base) | 512 GB | 256 GB |
| Storage type | UFS 4.0 | UFS 4.0 |
| Memory card slot | No | No |
| Camera | ||
| Main camera | 48 MP | 50 MP |
| Main camera aperture | f/1.7 | f/1.7 |
| Main sensor size | 1/1.43" | 1/1.49" |
| Rear cameras | 3 | 4 |
| Optical stabilisation | Yes | Yes |
| Ultra-wide camera | Yes | Yes |
| Telephoto camera | Yes | Yes |
| Optical zoom | 3× | 5× |
| Max video | 4K | 8K |
| 4K video frame rate | 60 fps | 60 fps |
| Selfie camera | 20 MP | 16 MP |
| 4K selfie video | Yes | No |
| Battery | ||
| Battery capacity | 4,805 mAh | 5,100 mAh |
| Battery type | Li-Po | Li-Po |
| Active use (test) | 12 h | — |
| Wired charging | 67 W | 67 W |
| Charged in 30 min | 71% | 93% |
| Wireless charging | No | Yes |
| Wireless charging power | — | 50 W |
| Reverse wireless charging | — | Yes |
| Connectivity | ||
| 5G | Yes | Yes |
| eSIM | Yes | No |
| Dual SIM | Yes | Yes |
| Wi-Fi standard | Wi-Fi 7 | Wi-Fi 7 |
| Bluetooth | 5.3 | 5.4 |
| NFC | Yes | Yes |
| USB | USB Type-C 3.1 | USB Type-C 3.2 |
| USB version | 3.1 | 3.2 |
| Video output | Yes | Yes |
| Satellite messaging | — | Yes |
| Infrared port | Yes | Yes |
| Dual-band GPS | Yes | Yes |
| Satellite navigation | GLONASS, GALILEO, BDS, QZSS | GLONASS, GALILEO, BDS, QZSS, NavIC |
| Features | ||
| Stereo speakers | Yes | Yes |
| 3.5 mm headphone jack | No | No |
| Loudspeaker loudness | -28.2 LUFS | — |
| Fingerprint sensor | Side | Side |
| Barometer | — | Yes |
| Sensors | Fingerprint (side-mounted), accelerometer, gyro, proximity, compass | Fingerprint (side-mounted), accelerometer, gyro, proximity, compass, barometer |
| SAR (head) | 0.98 W/kg | — |
| Software | ||
| OS at launch | Android 13 | Android 14 |
| Platform | Android | Android |
| Interface | OxygenOS 16 | HyperOS |
