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- A31 vs Galaxy A21
OPPO A31 vs Samsung Galaxy A21
What A31 does better (6) and where Galaxy A21 wins (7) — every spec side by side.
vs
2.9Display3.4
3.2Camera5.6
2.9Battery2.6
3.5Features5.0
Dimensions
Size comparison
A31Galaxy A21
| A31 | Galaxy A21 | Difference | |
|---|---|---|---|
| Height | 163.9 mm | 167.8 mm | −3.9 mm |
| Width | 75.5 mm | 76.7 mm | −1.2 mm |
| Thickness | 8.3 mm | 8.1 mm | +0.2 mm |
| Weight | 180 g | 193 g | −13 g |
Drawn to the same scale from the official dimensions (front and side).
Why is A31 better than Galaxy A21?
- RAM6 GB vs 3 GB2×
- Storage (max)128 GB vs 32 GB4×
- Battery capacity4,230 mAh vs 4,000 mAh+6%
- Storage (base)64 GB vs 32 GB2×
- Weight180 g vs 193 g+7%
- Screen-to-body ratio82.4% vs 79.3%+4%
Why is Galaxy A21 better than A31?
- NFCNo · A31: Yes
- Main camera12 MP vs 16 MP+33%
- Rear cameras1 vs 22×
- Ultra-wide cameraNo · A31: Yes
- CPU frequency2.3 GHz vs 2.35 GHz+2%
- Selfie camera8 MP vs 13 MP+62%
- Thickness8.3 mm vs 8.1 mm+2%
Specifications
Side by side
| Design | ||
| Weight | 180 g | 193 g |
| Thickness | 8.3 mm | 8.1 mm |
| Height | 163.9 mm | 167.8 mm |
| Width | 75.5 mm | 76.7 mm |
| Frame | Plastic | Plastic |
| Back | Plastic | Plastic |
| Glass protection | Corning Gorilla Glass 3 | — |
| Colours | Fantasy White, Mystery Black, Lake Green | Black |
| Display | ||
| Screen size | 6.5″ | 6.5″ |
| Panel | IPS LCD | IPS LCD |
| OLED panel | No | No |
| Resolution (width) | 720 px | 720 px |
| Resolution (height) | 1,600 px | 1,600 px |
| Pixel density | 270 ppi | 270 ppi |
| Refresh rate | 60 Hz | 60 Hz |
| Peak brightness | 480 nits | — |
| Screen-to-body ratio | 82.4% | 79.3% |
| Performance | ||
| Chipset | Mediatek MT6765V/CB Helio P35 | Mediatek MT6765 Helio P35 |
| Chip maker | MediaTek | MediaTek |
| Process | 12 nm | 12 nm |
| CPU cores | 8 | 8 |
| CPU frequency | 2.3 GHz | 2.35 GHz |
| GPU | PowerVR GE8320 | PowerVR GE8320 |
| Memory | ||
| RAM | 6 GB | 3 GB |
| Storage (max) | 128 GB | 32 GB |
| Storage (base) | 64 GB | 32 GB |
| Storage type | eMMC 5.1 | eMMC 5.1 |
| Memory card slot | Yes | Yes |
| Camera | ||
| Main camera | 12 MP | 16 MP |
| Main camera aperture | f/1.8 | f/1.8 |
| Main sensor size | 1/2.86" | 1/3.06" |
| Rear cameras | 1 | 2 |
| Optical stabilisation | No | No |
| Ultra-wide camera | No | Yes |
| Telephoto camera | No | No |
| Max video | 1080p | 1080p |
| Selfie camera | 8 MP | 13 MP |
| 4K selfie video | No | No |
| Battery | ||
| Battery capacity | 4,230 mAh | 4,000 mAh |
| Battery type | Li-Po | Li-Po |
| Wired charging | — | 15 W |
| Wireless charging | No | No |
| Connectivity | ||
| 5G | No | No |
| eSIM | No | No |
| Dual SIM | Yes | Yes |
| Wi-Fi standard | Wi-Fi 5 | Wi-Fi 5 |
| Bluetooth | 5 | 5 |
| NFC | No | Yes |
| USB | microUSB 2.0 | USB Type-C 2.0 |
| USB version | — | 2 |
| Satellite navigation | GLONASS, BDS | GLONASS, BDS |
| Features | ||
| Stereo speakers | No | No |
| 3.5 mm headphone jack | Yes | Yes |
| Fingerprint sensor | Rear | Rear |
| Sensors | Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass | Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass |
| SAR (head) | — | 1.27 W/kg |
| Software | ||
| OS at launch | Android 9.0 (Pie) | Android 10 |
| Platform | Android | Android |
| Interface | ColorOS 6.1 | One UI 2.0 |
