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- A57 4G vs C21
OPPO A57 4G vs Realme C21
What A57 4G does better (8) and where C21 wins (0) — every spec side by side.
Dimensions
Size comparison
A57 4GC21
| A57 4G | C21 | Difference | |
|---|---|---|---|
| Height | 163.7 mm | 165.2 mm | −1.5 mm |
| Width | 75 mm | 76.4 mm | −1.4 mm |
| Thickness | 8 mm | 8.9 mm | −0.9 mm |
| Weight | 187 g | 190 g | −3 g |
Drawn to the same scale from the official dimensions (front and side).
Why is A57 4G better than C21?
- Wired charging33 W vs 10 W3.3×
- Storage (max)128 GB vs 64 GB2×
- Storage (base)64 GB vs 32 GB2×
- Selfie camera8 MP vs 5 MP+60%
- Wi-Fi standardWi-Fi 5 vs Wi-Fi 4+25%
- Thickness8 mm vs 8.9 mm+11%
- Bluetooth5.3 vs 5+6%
- Screen-to-body ratio84.2% vs 80.8%+4%
Why is C21 better than A57 4G?
C21 has no measurable advantages in this pair.
Specifications
Side by side
| Design | ||
| Weight | 187 g | 190 g |
| Thickness | 8 mm | 8.9 mm |
| Height | 163.7 mm | 165.2 mm |
| Width | 75 mm | 76.4 mm |
| Frame | Plastic | Plastic |
| Back | Plastic | Plastic |
| Ingress protection | IP5X | — |
| Water resistance (IPx) | IPx4 | — |
| Glass protection | — | Corning Gorilla Glass 3 |
| Colours | Glowing Black, Glowing Green | Cross Black, Cross Blue |
| Display | ||
| Screen size | 6.6″ | 6.5″ |
| Panel | IPS LCD | IPS LCD |
| OLED panel | No | No |
| Resolution (width) | 720 px | 720 px |
| Resolution (height) | 1,612 px | 1,600 px |
| Pixel density | 269 ppi | 270 ppi |
| Refresh rate | 60 Hz | 60 Hz |
| Peak brightness | — | 400 nits |
| Screen-to-body ratio | 84.2% | 80.8% |
| Performance | ||
| Chipset | Mediatek MT6765G Helio G35 | Mediatek MT6765G Helio G35 |
| Chip maker | MediaTek | MediaTek |
| Process | 12 nm | 12 nm |
| CPU cores | 8 | 8 |
| CPU frequency | 2.3 GHz | 2.3 GHz |
| GPU | PowerVR GE8320 | PowerVR GE8320 |
| Memory | ||
| RAM | 4 GB | 4 GB |
| Storage (max) | 128 GB | 64 GB |
| Storage (base) | 64 GB | 32 GB |
| Storage type | eMMC 5.1 | eMMC 5.1 |
| Memory card slot | Yes | Yes |
| Camera | ||
| Main camera | 13 MP | 13 MP |
| Main camera aperture | f/2.2 | f/2.2 |
| Main sensor size | 1/3.06" | 1/3.06" |
| Rear cameras | 1 | 1 |
| Optical stabilisation | No | No |
| Ultra-wide camera | No | No |
| Telephoto camera | No | No |
| Max video | 1080p | 1080p |
| Selfie camera | 8 MP | 5 MP |
| 4K selfie video | No | No |
| Battery | ||
| Battery capacity | 5,000 mAh | 5,000 mAh |
| Battery type | Li-Po | — |
| Wired charging | 33 W | 10 W |
| Charged in 30 min | 50% | — |
| Wireless charging | No | No |
| Connectivity | ||
| 5G | No | No |
| eSIM | No | No |
| Dual SIM | Yes | Yes |
| Wi-Fi standard | Wi-Fi 5 | Wi-Fi 4 |
| Bluetooth | 5.3 | 5 |
| NFC | No | No |
| USB | USB Type-C 2.0 | microUSB 2.0 |
| USB version | 2 | — |
| Satellite navigation | — | GLONASS, BDS |
| Features | ||
| Stereo speakers | No | No |
| 3.5 mm headphone jack | Yes | Yes |
| Fingerprint sensor | Side | Rear |
| Sensors | Fingerprint (side-mounted), accelerometer, proximity | Fingerprint (rear-mounted), accelerometer, proximity, compass |
| Software | ||
| OS at launch | Android 12 | Android 10 |
| Platform | Android | Android |
| Interface | ColorOS 14 | — |
