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- O2 vs C51s
Lava O2 vs Realme C51s
What O2 does better (4) and where C51s wins (6) — every spec side by side.
Dimensions
Size comparison
O2C51s
| O2 | C51s | Difference | |
|---|---|---|---|
| Height | 165 mm | 167.2 mm | −2.2 mm |
| Width | 76.1 mm | 76.7 mm | −0.6 mm |
| Thickness | 8.7 mm | 7.5 mm | +1.2 mm |
| Weight | 200 g | 182 g | +18 g |
Drawn to the same scale from the official dimensions (front and side).
Why is O2 better than C51s?
- RAM8 GB vs 6 GB+33%
- CPU frequency2 GHz vs 1.8 GHz+11%
- Pixel density270 ppi vs 260 ppi+4%
- Selfie camera8 MP vs 5 MP+60%
Why is C51s better than O2?
- Wired charging18 W vs 33 W+83%
- NFCNo · O2: Yes
- Weight200 g vs 182 g+10%
- Screen size6.5″ vs 6.7″+4%
- Thickness8.7 mm vs 7.5 mm+16%
- Screen-to-body ratio81.2% vs 85.5%+5%
Specifications
Side by side
| Design | ||
| Weight | 200 g | 182 g |
| Thickness | 8.7 mm | 7.5 mm |
| Height | 165 mm | 167.2 mm |
| Width | 76.1 mm | 76.7 mm |
| Frame | — | Plastic |
| Back | — | Plastic |
| Ingress protection | — | IP54 |
| Water resistance (IPx) | — | IPx4 |
| Colours | Imperial Green, Majestic Purple, Royal Gold | Shiny Green, Mighty Black |
| Display | ||
| Screen size | 6.5″ | 6.7″ |
| Panel | IPS LCD | IPS LCD |
| OLED panel | No | No |
| Resolution (width) | 720 px | 720 px |
| Resolution (height) | 1,600 px | 1,600 px |
| Pixel density | 270 ppi | 260 ppi |
| Refresh rate | 90 Hz | 90 Hz |
| Peak brightness | — | 560 nits |
| Screen-to-body ratio | 81.2% | 85.5% |
| Performance | ||
| Chipset | Unisoc Tiger T616 | Unisoc Tiger T612 |
| Chip maker | Unisoc | Unisoc |
| Process | 12 nm | 12 nm |
| CPU cores | 8 | 8 |
| CPU frequency | 2 GHz | 1.8 GHz |
| GPU | Mali-G57 MP1 | Mali-G57 |
| Memory | ||
| RAM | 8 GB | 6 GB |
| Storage (max) | 128 GB | 128 GB |
| Storage (base) | 128 GB | 128 GB |
| Storage type | UFS 2.2 | — |
| Memory card slot | Yes | Yes |
| Camera | ||
| Main camera | 50 MP | 50 MP |
| Main camera aperture | — | f/1.8 |
| Main sensor size | — | 1/2.76" |
| 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 | 5,000 mAh | 5,000 mAh |
| Battery type | Li-Po | — |
| Wired charging | 18 W | 33 W |
| Charged in 30 min | — | 54% |
| Wireless charging | No | No |
| Connectivity | ||
| 5G | — | No |
| eSIM | No | No |
| Dual SIM | Yes | Yes |
| Wi-Fi standard | Wi-Fi 5 | Wi-Fi 5 |
| Bluetooth | 5 | 5 |
| NFC | No | Yes |
| USB | USB Type-C 2.0 | USB Type-C |
| USB version | 2 | — |
| Satellite navigation | — | GLONASS, GALILEO |
| Features | ||
| Stereo speakers | No | No |
| 3.5 mm headphone jack | Yes | Yes |
| Fingerprint sensor | Side | Side |
| Sensors | Fingerprint (side-mounted), accelerometer, proximity | Fingerprint (side-mounted), accelerometer, gyro, proximity, compass |
| Software | ||
| OS at launch | Android 13 | Android 13 |
| Platform | Android | Android |
| Interface | — | realme UI T Edition |
