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- B40 vs Blade A31
Cat B40 vs ZTE Blade A31
What B40 does better (2) and where Blade A31 wins (10) — every spec side by side.
Dimensions
Size comparison
B40Blade A31
| B40 | Blade A31 | Difference | |
|---|---|---|---|
| Height | 145 mm | 140 mm | +5 mm |
| Width | 62 mm | 71 mm | −9 mm |
| Thickness | 18 mm | 8.9 mm | +9.1 mm |
| Weight | 157 g | 166 g | −9 g |
Drawn to the same scale from the official dimensions (front and side).
Why is B40 better than Blade A31?
- Weight157 g vs 166 g+6%
- Bluetooth5 vs 4.2+19%
Why is Blade A31 better than B40?
- Main camera2 MP vs 8 MP4×
- Battery capacity1,800 mAh vs 3,000 mAh+67%
- Screen size2.4″ vs 5.4″2.3×
- NFCNo · B40: Yes
- Pixel density167 ppi vs 295 ppi+77%
- Resolution (width)240 px vs 720 px3×
- Screen-to-body ratio19.8% vs 77.1%3.9×
- CPU cores1 vs 88×
- Thickness18 mm vs 8.9 mm2×
- Dual SIMNo · B40: Yes
Specifications
Side by side
| Design | ||
| Weight | 157 g | 166 g |
| Thickness | 18 mm | 8.9 mm |
| Height | 145 mm | 140 mm |
| Width | 62 mm | 71 mm |
| Ingress protection | IP69 | — |
| Water resistance (IPx) | IPx9 | — |
| Colours | Black | Blue, Gray |
| Display | ||
| Screen size | 2.4″ | 5.4″ |
| Panel | TFT LCD | IPS LCD |
| OLED panel | No | No |
| Resolution (width) | 240 px | 720 px |
| Resolution (height) | 320 px | 1,440 px |
| Pixel density | 167 ppi | 295 ppi |
| Refresh rate | 60 Hz | 60 Hz |
| Screen-to-body ratio | 19.8% | 77.1% |
| Performance | ||
| Chipset | Unisoc T117 | Unisoc SC9863A |
| Chip maker | Unisoc | Unisoc |
| Process | — | 28 nm |
| CPU cores | 1 | 8 |
| CPU frequency | — | 1.6 GHz |
| GPU | — | IMG8322 |
| Memory | ||
| RAM | — | 2 GB |
| Storage (max) | — | 32 GB |
| Storage (base) | — | 32 GB |
| Storage type | — | eMMC 5.1 |
| Memory card slot | Yes | Yes |
| Camera | ||
| Main camera | 2 MP | 8 MP |
| Rear cameras | 1 | 1 |
| Optical stabilisation | No | No |
| Ultra-wide camera | No | No |
| Telephoto camera | No | No |
| Max video | — | 720p |
| Selfie camera | — | 2 MP |
| Battery | ||
| Battery capacity | 1,800 mAh | 3,000 mAh |
| Battery type | Li-Ion | Li-Ion |
| Wireless charging | No | No |
| Connectivity | ||
| 5G | No | No |
| eSIM | No | No |
| Dual SIM | No | Yes |
| Wi-Fi standard | — | 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 |
| Sensors | Accelerometer | Accelerometer |
| Software | ||
| OS at launch | KaiOS 2.5 | Android 11 (Go edition) |
| Platform | iOS | Android |
