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- 20B vs Blade A31
TCL 20B vs ZTE Blade A31
What 20B does better (13) and where Blade A31 wins (3) — every spec side by side.
Dimensions
Size comparison
20BBlade A31
| 20B | Blade A31 | Difference | |
|---|---|---|---|
| Height | 164.7 mm | 140 mm | +24.7 mm |
| Width | 74.7 mm | 71 mm | +3.7 mm |
| Thickness | 8 mm | 8.9 mm | −0.9 mm |
| Weight | 178 g | 166 g | +12 g |
Drawn to the same scale from the official dimensions (front and side).
Why is 20B better than Blade A31?
- Main camera50 MP vs 8 MP6.2×
- RAM4 GB vs 2 GB2×
- Battery capacity4,000 mAh vs 3,000 mAh+33%
- Storage (max)64 GB vs 32 GB2×
- Selfie camera8 MP vs 2 MP4×
- Process12 nm vs 28 nm2.3×
- Storage (base)64 GB vs 32 GB2×
- Max video1080p vs 720p
- Screen size6.5″ vs 5.4″+20%
- CPU frequency1.8 GHz vs 1.6 GHz+12%
- Bluetooth5 vs 4.2+19%
- Thickness8 mm vs 8.9 mm+11%
Why is Blade A31 better than 20B?
- NFCNo · 20B: Yes
- Pixel density269 ppi vs 295 ppi+10%
- Weight178 g vs 166 g+7%
Specifications
Side by side
| Design | ||
| Weight | 178 g | 166 g |
| Thickness | 8 mm | 8.9 mm |
| Height | 164.7 mm | 140 mm |
| Width | 74.7 mm | 71 mm |
| Frame | Plastic | — |
| Back | Plastic | — |
| Colours | Gray, Violet | 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 | 269 ppi | 295 ppi |
| Refresh rate | 60 Hz | 60 Hz |
| Screen-to-body ratio | 83.4% | 77.1% |
| Performance | ||
| Chipset | Mediatek MT6762 Helio P22 | Unisoc SC9863A |
| Chip maker | MediaTek | Unisoc |
| Process | 12 nm | 28 nm |
| CPU cores | 8 | 8 |
| CPU frequency | 1.8 GHz | 1.6 GHz |
| GPU | PowerVR GE8320 | IMG8322 |
| Memory | ||
| RAM | 4 GB | 2 GB |
| Storage (max) | 64 GB | 32 GB |
| Storage (base) | 64 GB | 32 GB |
| Storage type | eMMC 5.1 | eMMC 5.1 |
| Memory card slot | Yes | Yes |
| Camera | ||
| Main camera | 50 MP | 8 MP |
| Rear cameras | 1 | 1 |
| Optical stabilisation | No | No |
| Ultra-wide camera | No | No |
| Telephoto camera | No | No |
| Max video | 1080p | 720p |
| Selfie camera | 8 MP | 2 MP |
| 4K selfie video | No | — |
| Battery | ||
| Battery capacity | 4,000 mAh | 3,000 mAh |
| Battery type | Li-Po | Li-Ion |
| Wired charging | 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 | 4.2 |
| NFC | No | Yes |
| USB | USB Type-C 2.0 | microUSB 2.0 |
| USB version | 2 | — |
| Satellite navigation | — | GLONASS |
| Features | ||
| Stereo speakers | No | No |
| 3.5 mm headphone jack | Yes | Yes |
| Fingerprint sensor | Rear | — |
| Sensors | Fingerprint (rear-mounted), accelerometer, proximity | Accelerometer |
| Software | ||
| OS at launch | Android 11 | Android 11 (Go edition) |
| Platform | Android | Android |
