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- Cool 40i vs C51
Coolpad Cool 40i vs Oukitel C51
What Cool 40i does better (10) and where C51 wins (4) — every spec side by side.
Dimensions
Size comparison
Cool 40iC51
| Cool 40i | C51 | Difference | |
|---|---|---|---|
| Height | 166.2 mm | 168.1 mm | −1.9 mm |
| Width | 77 mm | 78.2 mm | −1.2 mm |
| Thickness | 8.3 mm | 9.4 mm | −1.1 mm |
| Weight | 202 g | 205 g | −3 g |
Drawn to the same scale from the official dimensions (front and side).
Why is Cool 40i better than C51?
- Main camera50 MP vs 13 MP3.8×
- Refresh rate90 Hz vs 60 Hz+50%
- Storage (max)256 GB vs 128 GB2×
- NFCYes · C51: No
- CPU frequency2.3 GHz vs 1.6 GHz+44%
- Dual SIMYes · C51: No
- Pixel density269 ppi vs 258 ppi+4%
- Selfie camera8 MP vs 5 MP+60%
- Main camera aperturef/1.8 vs f/2.2+22%
- Thickness8.3 mm vs 9.4 mm+13%
Why is C51 better than Cool 40i?
- Battery capacity4,500 mAh vs 5,150 mAh+14%
- Peak brightness400 nits vs 450 nits+12%
- Screen size6.6″ vs 6.8″+4%
- Screen-to-body ratio80.8% vs 84.9%+5%
Specifications
Side by side
| Design | ||
| Weight | 202 g | 205 g |
| Thickness | 8.3 mm | 9.4 mm |
| Height | 166.2 mm | 168.1 mm |
| Width | 77 mm | 78.2 mm |
| Glass protection | — | Corning Gorilla Glass 5 |
| Colours | Phantom Black, Glacier Blue, Lite Pink, Ivory White | Gray, Blue, Purple |
| Display | ||
| Screen size | 6.6″ | 6.8″ |
| Panel | IPS LCD | IPS LCD |
| OLED panel | No | No |
| Resolution (width) | 720 px | 720 px |
| Resolution (height) | 1,612 px | 1,600 px |
| Pixel density | 269 ppi | 258 ppi |
| Refresh rate | 90 Hz | 60 Hz |
| Peak brightness | 400 nits | 450 nits |
| Screen-to-body ratio | 80.8% | 84.9% |
| Performance | ||
| Chipset | Mediatek MT6765 Helio G37 | Unisoc T606 |
| Chip maker | MediaTek | Unisoc |
| Process | 12 nm | 12 nm |
| CPU cores | 8 | 8 |
| CPU frequency | 2.3 GHz | 1.6 GHz |
| GPU | PowerVR GE8320 | Mali-G57 MP1 |
| Memory | ||
| RAM | 6 GB | 6 GB |
| Storage (max) | 256 GB | 128 GB |
| Storage (base) | 128 GB | 128 GB |
| Storage type | eMMC 5.1 | — |
| Memory card slot | Yes | Yes |
| Camera | ||
| Main camera | 50 MP | 13 MP |
| Main camera aperture | f/1.8 | f/2.2 |
| Main sensor size | — | 1/3.06" |
| Rear cameras | 1 | 1 |
| Optical stabilisation | No | No |
| Ultra-wide camera | No | No |
| Telephoto camera | No | No |
| Max video | 1080p | 1080p |
| Selfie camera | 8 MP | 5 MP |
| 4K selfie video | No | No |
| Battery | ||
| Battery capacity | 4,500 mAh | 5,150 mAh |
| Battery type | — | Li-Po |
| Wired charging | 10 W | 10 W |
| Wireless charging | No | No |
| Connectivity | ||
| 5G | No | No |
| eSIM | No | No |
| Dual SIM | Yes | No |
| Wi-Fi standard | Wi-Fi 5 | Wi-Fi 5 |
| Bluetooth | 5 | 5 |
| NFC | Yes | No |
| USB | USB Type-C 2.0 | USB Type-C 2.0 |
| USB version | 2 | 2 |
| Satellite navigation | GLONASS, GALILEO, BDS | GLONASS, GALILEO, BDS |
| Features | ||
| Stereo speakers | No | No |
| 3.5 mm headphone jack | Yes | Yes |
| Fingerprint sensor | Side | Side |
| Sensors | Fingerprint (side-mounted), accelerometer, gyro, proximity, compass | Fingerprint (side-mounted), accelerometer, proximity |
| Software | ||
| OS at launch | Android 14 | Android 13 |
| Platform | Android | Android |
| Interface | Cool UI | — |
