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- S42 H vs C21
Caterpillar S42 H vs Realme C21
What S42 H does better (1) and where C21 wins (7) — every spec side by side.
Dimensions
Size comparison
S42 HC21
| S42 H | C21 | Difference | |
|---|---|---|---|
| Height | 161.3 mm | 165.2 mm | −3.9 mm |
| Width | 77.2 mm | 76.4 mm | +0.8 mm |
| Thickness | 12.7 mm | 8.9 mm | +3.8 mm |
| Weight | 220 g | 190 g | +30 g |
Drawn to the same scale from the official dimensions (front and side).
Why is S42 H better than C21?
- NFCYes · C21: No
Why is C21 better than S42 H?
- Storage (max)32 GB vs 64 GB2×
- Battery capacity4,200 mAh vs 5,000 mAh+19%
- RAM3 GB vs 4 GB+33%
- Screen size5.5″ vs 6.5″+18%
- Weight220 g vs 190 g+16%
- CPU frequency2 GHz vs 2.3 GHz+15%
- Thickness12.7 mm vs 8.9 mm+43%
Specifications
Side by side
| Design | ||
| Weight | 220 g | 190 g |
| Thickness | 12.7 mm | 8.9 mm |
| Height | 161.3 mm | 165.2 mm |
| Width | 77.2 mm | 76.4 mm |
| Frame | — | Plastic |
| Back | — | Plastic |
| Ingress protection | IP68 | — |
| Water resistance (IPx) | IPx8 | — |
| Glass protection | Gorilla Glass 5 | Corning Gorilla Glass 3 |
| Colours | Black | Cross Black, Cross Blue |
| Display | ||
| Screen size | 5.5″ | 6.5″ |
| Panel | IPS | IPS LCD |
| OLED panel | No | No |
| Resolution (width) | 720 px | 720 px |
| Resolution (height) | 1,440 px | 1,600 px |
| Pixel density | — | 270 ppi |
| Refresh rate | — | 60 Hz |
| Peak brightness | — | 400 nits |
| Screen-to-body ratio | — | 80.8% |
| Performance | ||
| Chipset | Mediatek Helio A22 | Mediatek MT6765G Helio G35 |
| Chip maker | Mediatek | MediaTek |
| Process | — | 12 nm |
| CPU cores | 8 | 8 |
| CPU frequency | 2 GHz | 2.3 GHz |
| GPU | PowerVR GE8300 | PowerVR GE8320 |
| Memory | ||
| RAM | 3 GB | 4 GB |
| Storage (max) | 32 GB | 64 GB |
| Storage (base) | 32 GB | 32 GB |
| Storage type | — | eMMC 5.1 |
| Memory card slot | Yes | Yes |
| Camera | ||
| Main camera | 13 MP | 13 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 |
| Selfie camera | 5 MP | 5 MP |
| 4K selfie video | — | No |
| Battery | ||
| Battery capacity | 4,200 mAh | 5,000 mAh |
| Battery type | Li-Po | — |
| Wired charging | — | 10 W |
| Wireless charging | — | No |
| Connectivity | ||
| 5G | No | No |
| eSIM | No | No |
| Dual SIM | Yes | Yes |
| Wi-Fi standard | Wi-Fi 4 | Wi-Fi 4 |
| Bluetooth | 5 | 5 |
| NFC | Yes | No |
| USB | — | microUSB 2.0 |
| USB version | 2 | — |
| Satellite navigation | GPS, GLONASS | GLONASS, BDS |
| Features | ||
| Stereo speakers | — | No |
| 3.5 mm headphone jack | — | Yes |
| Fingerprint sensor | — | Rear |
| Sensors | proximity, accelerometer, compass | Fingerprint (rear-mounted), accelerometer, proximity, compass |
| Software | ||
| OS at launch | Android 10 | Android 10 |
| Platform | Android | Android |
| Interface | — | realme UI |
