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- 4 vs C21
Fairphone 4 vs Realme C21
What 4 does better (18) and where C21 wins (6) — every spec side by side.
Dimensions
Size comparison
4C21
| 4 | C21 | Difference | |
|---|---|---|---|
| Height | 162 mm | 165.2 mm | −3.2 mm |
| Width | 75.5 mm | 76.4 mm | −0.9 mm |
| Thickness | 10.5 mm | 8.9 mm | +1.6 mm |
| Weight | 225 g | 190 g | +35 g |
Drawn to the same scale from the official dimensions (front and side).
Why is 4 better than C21?
- Main camera48 MP vs 13 MP3.7×
- RAM8 GB vs 4 GB2×
- Wired charging20 W vs 10 W2×
- Storage (max)256 GB vs 64 GB4×
- Optical stabilisationYes · C21: No
- 5GYes · C21: No
- NFCYes · C21: No
- Pixel density409 ppi vs 270 ppi+51%
- Storage (base)128 GB vs 32 GB4×
- Selfie camera25 MP vs 5 MP5×
- Rear cameras2 vs 12×
- Ultra-wide cameraYes · C21: No
Why is C21 better than 4?
- Battery capacity3,905 mAh vs 5,000 mAh+28%
- 3.5 mm headphone jackNo · 4: Yes
- Weight225 g vs 190 g+18%
- CPU frequency2.2 GHz vs 2.3 GHz+5%
- Screen size6.3″ vs 6.5″+3%
- Thickness10.5 mm vs 8.9 mm+18%
Specifications
Side by side
| Design | ||
| Weight | 225 g | 190 g |
| Thickness | 10.5 mm | 8.9 mm |
| Height | 162 mm | 165.2 mm |
| Width | 75.5 mm | 76.4 mm |
| Frame | Aluminium | Plastic |
| Back | Plastic | Plastic |
| Ingress protection | IP54 | — |
| Water resistance (IPx) | IPx4 | — |
| Glass protection | Corning Gorilla Glass 5 | Corning Gorilla Glass 3 |
| Colours | Gray, Green, Speckled Green | Cross Black, Cross Blue |
| Display | ||
| Screen size | 6.3″ | 6.5″ |
| Panel | IPS LCD | IPS LCD |
| OLED panel | No | No |
| Resolution (width) | 1,080 px | 720 px |
| Resolution (height) | 2,340 px | 1,600 px |
| Pixel density | 409 ppi | 270 ppi |
| Refresh rate | 60 Hz | 60 Hz |
| Peak brightness | — | 400 nits |
| Screen-to-body ratio | 79.7% | 80.8% |
| Performance | ||
| Chipset | Qualcomm SM7225 Snapdragon 750G 5G | Mediatek MT6765G Helio G35 |
| Chip maker | Qualcomm | MediaTek |
| Process | 8 nm | 12 nm |
| CPU cores | 8 | 8 |
| CPU frequency | 2.2 GHz | 2.3 GHz |
| GPU | Adreno 619 | PowerVR GE8320 |
| Memory | ||
| RAM | 8 GB | 4 GB |
| Storage (max) | 256 GB | 64 GB |
| Storage (base) | 128 GB | 32 GB |
| Storage type | — | eMMC 5.1 |
| Memory card slot | Yes | Yes |
| Camera | ||
| Main camera | 48 MP | 13 MP |
| Main camera aperture | f/1.6 | f/2.2 |
| Main sensor size | 1/2.0" | 1/3.06" |
| Rear cameras | 2 | 1 |
| Optical stabilisation | Yes | No |
| Ultra-wide camera | Yes | No |
| Telephoto camera | No | No |
| Max video | 4K | 1080p |
| 4K video frame rate | 30 fps | — |
| Selfie camera | 25 MP | 5 MP |
| 4K selfie video | No | No |
| Battery | ||
| Battery capacity | 3,905 mAh | 5,000 mAh |
| Battery type | Li-Ion | — |
| Wired charging | 20 W | 10 W |
| Charged in 30 min | 50% | — |
| Wireless charging | No | No |
| Connectivity | ||
| 5G | Yes | No |
| eSIM | Yes | No |
| Dual SIM | Yes | Yes |
| Wi-Fi standard | Wi-Fi 5 | Wi-Fi 4 |
| Bluetooth | 5.1 | 5 |
| NFC | Yes | No |
| USB | USB Type-C 3.0 | microUSB 2.0 |
| USB version | 3 | — |
| Video output | Yes | — |
| Satellite navigation | GLONASS, GALILEO, BDS | GLONASS, BDS |
| Features | ||
| Stereo speakers | No | No |
| 3.5 mm headphone jack | No | Yes |
| Fingerprint sensor | Side | Rear |
| Sensors | Fingerprint (side-mounted), accelerometer, gyro, proximity, compass | Fingerprint (rear-mounted), accelerometer, proximity, compass |
| SAR (head) | 0.49 W/kg | — |
| Software | ||
| OS at launch | Android 11 | Android 10 |
| Platform | Android | Android |
| Interface | Stock Android | — |
