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- B40 vs Y21s
Caterpillar B40 vs Vivo Y21s
What B40 does better (1) and where Y21s wins (6) — every spec side by side.
Dimensions
Size comparison
B40Y21s
| B40 | Y21s | Difference | |
|---|---|---|---|
| Height | 145 mm | 164.3 mm | −19.3 mm |
| Width | 62 mm | 76.1 mm | −14.1 mm |
| Thickness | 18 mm | 8 mm | +10 mm |
| Weight | 157 g | 182 g | −25 g |
Drawn to the same scale from the official dimensions (front and side).
Why is B40 better than Y21s?
- Weight157 g vs 182 g+16%
Why is Y21s better than B40?
- Battery capacity1,800 mAh vs 5,000 mAh2.8×
- Main camera2 MP vs 50 MP25×
- Screen size2.4″ vs 6.5″2.7×
- NFCNo · B40: Yes
- Resolution (width)240 px vs 720 px3×
- Thickness18 mm vs 8 mm2.2×
Specifications
Side by side
| Design | ||
| Weight | 157 g | 182 g |
| Thickness | 18 mm | 8 mm |
| Height | 145 mm | 164.3 mm |
| Width | 62 mm | 76.1 mm |
| Ingress protection | IP68 | — |
| Water resistance (IPx) | IPx8 | — |
| Colours | Black | Midnight Blue, Pearl White |
| Display | ||
| Screen size | 2.4″ | 6.5″ |
| Panel | Farb-Display | IPS LCD |
| OLED panel | No | No |
| Resolution (width) | 240 px | 720 px |
| Resolution (height) | 320 px | 1,600 px |
| Pixel density | — | 270 ppi |
| Refresh rate | — | 60 Hz |
| Screen-to-body ratio | — | 81.8% |
| Performance | ||
| Chipset | Unisoc T117 | Mediatek MT6769V/CU Helio G80 |
| Chip maker | Unisoc | MediaTek |
| Process | — | 12 nm |
| CPU cores | — | 8 |
| CPU frequency | — | 2 GHz |
| GPU | — | Mali-G52 MC2 |
| Memory | ||
| RAM | — | 6 GB |
| Storage (max) | — | 128 GB |
| Storage (base) | — | 128 GB |
| Memory card slot | Yes | Yes |
| Camera | ||
| Main camera | 2 MP | 50 MP |
| Main camera aperture | — | f/1.8 |
| Rear cameras | 1 | 1 |
| Optical stabilisation | No | No |
| Ultra-wide camera | No | No |
| Telephoto camera | No | No |
| Max video | — | 1080p |
| Selfie camera | — | 8 MP |
| 4K selfie video | — | No |
| Battery | ||
| Battery capacity | 1,800 mAh | 5,000 mAh |
| Wired charging | — | 18 W |
| Wireless charging | — | No |
| Connectivity | ||
| 5G | No | No |
| eSIM | No | No |
| Dual SIM | Yes | Yes |
| Wi-Fi standard | — | Wi-Fi 5 |
| Bluetooth | 5 | 5 |
| NFC | No | Yes |
| USB | — | USB Type-C 2.0 |
| USB version | — | 2 |
| Satellite navigation | — | GLONASS, GALILEO, BDS |
| Features | ||
| Stereo speakers | — | No |
| 3.5 mm headphone jack | — | Yes |
| Fingerprint sensor | — | Side |
| Sensors | — | Fingerprint (side-mounted), accelerometer, proximity, compass |
| SAR (head) | — | 0.83 W/kg |
| Software | ||
| OS at launch | — | Android 11 |
| Platform | — | Android |
| Interface | — | Funtouch 11.1 |
