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- C21 vs Blade A31
Realme C21 vs ZTE Blade A31
What C21 does better (11) and where Blade A31 wins (3) — every spec side by side.
Dimensions
Size comparison
C21Blade A31
| C21 | Blade A31 | Difference | |
|---|---|---|---|
| Height | 165.2 mm | 140 mm | +25.2 mm |
| Width | 76.4 mm | 71 mm | +5.4 mm |
| Thickness | 8.9 mm | 8.9 mm | = |
| Weight | 190 g | 166 g | +24 g |
Drawn to the same scale from the official dimensions (front and side).
Why is C21 better than Blade A31?
- Battery capacity5,000 mAh vs 3,000 mAh+67%
- RAM4 GB vs 2 GB2×
- Main camera13 MP vs 8 MP+62%
- Storage (max)64 GB vs 32 GB2×
- Selfie camera5 MP vs 2 MP2.5×
- CPU frequency2.3 GHz vs 1.6 GHz+44%
- Process12 nm vs 28 nm2.3×
- Max video1080p vs 720p
- Screen size6.5″ vs 5.4″+19%
- Bluetooth5 vs 4.2+19%
- Screen-to-body ratio80.8% vs 77.1%+5%
Why is Blade A31 better than C21?
- NFCNo · C21: Yes
- Weight190 g vs 166 g+14%
- Pixel density270 ppi vs 295 ppi+9%
Specifications
Side by side
| Design | ||
| Weight | 190 g | 166 g |
| Thickness | 8.9 mm | 8.9 mm |
| Height | 165.2 mm | 140 mm |
| Width | 76.4 mm | 71 mm |
| Frame | Plastic | — |
| Back | Plastic | — |
| Glass protection | Corning Gorilla Glass 3 | — |
| Colours | Cross Black, Cross Blue | Blue, Gray |
| Display | ||
| Screen size | 6.5″ | 5.4″ |
| Panel | IPS LCD | IPS LCD |
| OLED panel | No | No |
| Resolution (width) | 720 px | 720 px |
| Resolution (height) | 1,600 px | 1,440 px |
| Pixel density | 270 ppi | 295 ppi |
| Refresh rate | 60 Hz | 60 Hz |
| Peak brightness | 400 nits | — |
| Screen-to-body ratio | 80.8% | 77.1% |
| Performance | ||
| Chipset | Mediatek MT6765G Helio G35 | Unisoc SC9863A |
| Chip maker | MediaTek | Unisoc |
| Process | 12 nm | 28 nm |
| CPU cores | 8 | 8 |
| CPU frequency | 2.3 GHz | 1.6 GHz |
| GPU | PowerVR GE8320 | IMG8322 |
| Memory | ||
| RAM | 4 GB | 2 GB |
| Storage (max) | 64 GB | 32 GB |
| Storage (base) | 32 GB | 32 GB |
| Storage type | eMMC 5.1 | eMMC 5.1 |
| Memory card slot | Yes | Yes |
| Camera | ||
| Main camera | 13 MP | 8 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 | 720p |
| Selfie camera | 5 MP | 2 MP |
| 4K selfie video | No | — |
| Battery | ||
| Battery capacity | 5,000 mAh | 3,000 mAh |
| Battery type | — | Li-Ion |
| Wired charging | 10 W | — |
| Wireless charging | No | No |
| Connectivity | ||
| 5G | No | No |
| eSIM | No | No |
| Dual SIM | Yes | Yes |
| Wi-Fi standard | Wi-Fi 4 | Wi-Fi 4 |
| Bluetooth | 5 | 4.2 |
| NFC | No | Yes |
| USB | microUSB 2.0 | microUSB 2.0 |
| Satellite navigation | GLONASS, BDS | GLONASS |
| Features | ||
| Stereo speakers | No | No |
| 3.5 mm headphone jack | Yes | Yes |
| Fingerprint sensor | Rear | — |
| Sensors | Fingerprint (rear-mounted), accelerometer, proximity, compass | Accelerometer |
| Software | ||
| OS at launch | Android 10 | Android 11 (Go edition) |
| Platform | Android | Android |
