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- J20 vs C30
Cubot J20 vs Realme C30
What J20 does better (1) and where C30 wins (15) — every spec side by side.
Dimensions
Size comparison
J20C30
| J20 | C30 | Difference | |
|---|---|---|---|
| Height | 126.3 mm | 164.1 mm | −37.8 mm |
| Width | 60.6 mm | 75.6 mm | −15 mm |
| Thickness | 12.7 mm | 8.5 mm | +4.2 mm |
| Weight | 143 g | 182 g | −39 g |
Drawn to the same scale from the official dimensions (front and side).
Why is J20 better than C30?
- Weight143 g vs 182 g+27%
Why is C30 better than J20?
- Battery capacity2,350 mAh vs 5,000 mAh2.1×
- RAM2 GB vs 4 GB2×
- Storage (max)16 GB vs 64 GB4×
- Main camera5 MP vs 8 MP+60%
- Screen size4″ vs 6.5″+62%
- Selfie camera2 MP vs 5 MP2.5×
- CPU frequency1.3 GHz vs 1.8 GHz+38%
- Process28 nm vs 12 nm2.3×
- CPU cores4 vs 82×
- Storage (base)16 GB vs 32 GB2×
- Pixel density245 ppi vs 270 ppi+10%
- Resolution (width)480 px vs 720 px+50%
Specifications
Side by side
| Design | ||
| Weight | 143 g | 182 g |
| Thickness | 12.7 mm | 8.5 mm |
| Height | 126.3 mm | 164.1 mm |
| Width | 60.6 mm | 75.6 mm |
| Frame | — | Plastic |
| Back | — | Plastic |
| Colours | Blue, Black, Green | Lake Blue, Bamboo Green |
| Display | ||
| Screen size | 4″ | 6.5″ |
| Panel | TN TFT | IPS LCD |
| OLED panel | No | No |
| Resolution (width) | 480 px | 720 px |
| Resolution (height) | 854 px | 1,600 px |
| Pixel density | 245 ppi | 270 ppi |
| Refresh rate | 60 Hz | 60 Hz |
| Peak brightness | — | 400 nits |
| Screen-to-body ratio | 57.6% | 82.2% |
| Performance | ||
| Chipset | Mediatek MT6739WA | Unisoc Tiger T612 |
| Chip maker | MediaTek | Unisoc |
| Process | 28 nm | 12 nm |
| CPU cores | 4 | 8 |
| CPU frequency | 1.3 GHz | 1.8 GHz |
| GPU | PowerVR GE8100 | Mali-G57 |
| AnTuTu score | — | 334,150 |
| Geekbench 6 (multi-core) | — | 1,556 |
| Memory | ||
| RAM | 2 GB | 4 GB |
| Storage (max) | 16 GB | 64 GB |
| Storage (base) | 16 GB | 32 GB |
| Storage type | — | UFS 2.2 |
| Memory card slot | Yes | Yes |
| Camera | ||
| Main camera | 5 MP | 8 MP |
| Main camera aperture | — | f/2 |
| Main sensor size | — | 1/4.0" |
| Rear cameras | 1 | 1 |
| Optical stabilisation | No | No |
| Ultra-wide camera | No | No |
| Telephoto camera | No | No |
| Max video | — | 1080p |
| Selfie camera | 2 MP | 5 MP |
| 4K selfie video | No | No |
| Battery | ||
| Battery capacity | 2,350 mAh | 5,000 mAh |
| Battery type | — | Li-Po |
| Wired charging | — | 10 W |
| Wireless charging | — | No |
| Connectivity | ||
| 5G | — | No |
| eSIM | No | No |
| Dual SIM | Yes | Yes |
| Wi-Fi standard | Wi-Fi 4 | Wi-Fi 4 |
| Bluetooth | 4.2 | 5 |
| NFC | No | No |
| USB | Yes | microUSB 2.0 |
| USB version | — | 2 |
| Satellite navigation | GLONASS, GALILEO | GLONASS, GALILEO, BDS |
| Features | ||
| Stereo speakers | No | No |
| 3.5 mm headphone jack | Yes | Yes |
| Sensors | Accelerometer | Accelerometer, proximity |
| SAR (head) | — | 1.02 W/kg |
| Software | ||
| OS at launch | Android 12 (Go edition) | Android 11 |
| Platform | Android | Android |
| Interface | — | Realme UI Go |
