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- C21 vs 20B
Realme C21 vs TCL 20B
What C21 does better (2) and where 20B wins (7) — every spec side by side.
Dimensions
Size comparison
C2120B
| C21 | 20B | Difference | |
|---|---|---|---|
| Height | 165.2 mm | 164.7 mm | +0.5 mm |
| Width | 76.4 mm | 74.7 mm | +1.7 mm |
| Thickness | 8.9 mm | 8 mm | +0.9 mm |
| Weight | 190 g | 178 g | +12 g |
Drawn to the same scale from the official dimensions (front and side).
Why is C21 better than 20B?
- Battery capacity5,000 mAh vs 4,000 mAh+25%
- CPU frequency2.3 GHz vs 1.8 GHz+28%
Why is 20B better than C21?
- Main camera13 MP vs 50 MP3.8×
- Wired charging10 W vs 18 W+80%
- Storage (base)32 GB vs 64 GB2×
- Weight190 g vs 178 g+7%
- Selfie camera5 MP vs 8 MP+60%
- Thickness8.9 mm vs 8 mm+11%
- Screen-to-body ratio80.8% vs 83.4%+3%
Specifications
Side by side
| Design | ||
| Weight | 190 g | 178 g |
| Thickness | 8.9 mm | 8 mm |
| Height | 165.2 mm | 164.7 mm |
| Width | 76.4 mm | 74.7 mm |
| Frame | Plastic | Plastic |
| Back | Plastic | Plastic |
| Glass protection | Corning Gorilla Glass 3 | — |
| Colours | Cross Black, Cross Blue | Gray, Violet |
| Display | ||
| Screen size | 6.5″ | 6.5″ |
| 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 | 269 ppi |
| Refresh rate | 60 Hz | 60 Hz |
| Peak brightness | 400 nits | — |
| Screen-to-body ratio | 80.8% | 83.4% |
| Performance | ||
| Chipset | Mediatek MT6765G Helio G35 | Mediatek MT6762 Helio P22 |
| Chip maker | MediaTek | MediaTek |
| Process | 12 nm | 12 nm |
| CPU cores | 8 | 8 |
| CPU frequency | 2.3 GHz | 1.8 GHz |
| GPU | PowerVR GE8320 | PowerVR GE8320 |
| Memory | ||
| RAM | 4 GB | 4 GB |
| Storage (max) | 64 GB | 64 GB |
| Storage (base) | 32 GB | 64 GB |
| Storage type | eMMC 5.1 | eMMC 5.1 |
| Memory card slot | Yes | Yes |
| Camera | ||
| Main camera | 13 MP | 50 MP |
| Main camera aperture | 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 | 5 MP | 8 MP |
| 4K selfie video | No | No |
| Battery | ||
| Battery capacity | 5,000 mAh | 4,000 mAh |
| Battery type | — | Li-Po |
| Wired charging | 10 W | 18 W |
| Wireless charging | No | No |
| Connectivity | ||
| 5G | No | — |
| eSIM | No | No |
| Dual SIM | Yes | Yes |
| Wi-Fi standard | Wi-Fi 4 | Wi-Fi 4 |
| Bluetooth | 5 | 5 |
| NFC | No | No |
| USB | microUSB 2.0 | USB Type-C 2.0 |
| USB version | — | 2 |
| Satellite navigation | GLONASS, BDS | — |
| Features | ||
| Stereo speakers | No | No |
| 3.5 mm headphone jack | Yes | Yes |
| Fingerprint sensor | Rear | Rear |
| Sensors | Fingerprint (rear-mounted), accelerometer, proximity, compass | Fingerprint (rear-mounted), accelerometer, proximity |
| Software | ||
| OS at launch | Android 10 | Android 11 |
| Platform | Android | Android |
| Interface | realme UI | — |
