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- A31 vs A55
OPPO A31 vs OPPO A55
What A31 does better (1) and where A55 wins (5) — every spec side by side.
Dimensions
Size comparison
A31A55
| A31 | A55 | Difference | |
|---|---|---|---|
| Height | 163.9 mm | 163.6 mm | +0.3 mm |
| Width | 75.5 mm | 75.7 mm | −0.2 mm |
| Thickness | 8.3 mm | 8.4 mm | −0.1 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 A55?
- Weight180 g vs 193 g+7%
Why is A55 better than A31?
- Main camera12 MP vs 50 MP4.2×
- NFCNo · A31: Yes
- Battery capacity4,230 mAh vs 5,000 mAh+18%
- Selfie camera8 MP vs 16 MP2×
- Peak brightness480 nits vs 550 nits+15%
Specifications
Side by side
| Design | ||
| Weight | 180 g | 193 g |
| Thickness | 8.3 mm | 8.4 mm |
| Height | 163.9 mm | 163.6 mm |
| Width | 75.5 mm | 75.7 mm |
| Frame | Plastic | — |
| Back | Plastic | — |
| Glass protection | Corning Gorilla Glass 3 | NEG T2X-1 |
| Colours | Fantasy White, Mystery Black, Lake Green | Rainbow Blue, Starry Black, Green |
| 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 | 550 nits |
| Screen-to-body ratio | 82.4% | 82.6% |
| Performance | ||
| Chipset | Mediatek MT6765V/CB Helio P35 | 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 | 6 GB | 6 GB |
| Storage (max) | 128 GB | 128 GB |
| Storage (base) | 64 GB | 64 GB |
| Storage type | eMMC 5.1 | — |
| Memory card slot | Yes | Yes |
| Camera | ||
| Main camera | 12 MP | 50 MP |
| Main camera aperture | f/1.8 | f/1.8 |
| Main sensor size | 1/2.86" | — |
| 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 | 16 MP |
| 4K selfie video | No | No |
| Battery | ||
| Battery capacity | 4,230 mAh | 5,000 mAh |
| Battery type | Li-Po | Li-Po |
| Wired charging | — | 18 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, GALILEO, BDS, QZSS |
| Features | ||
| Stereo speakers | No | No |
| 3.5 mm headphone jack | Yes | Yes |
| Fingerprint sensor | Rear | Side |
| Sensors | Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass | Fingerprint (side-mounted), accelerometer, proximity, compass |
| Software | ||
| OS at launch | Android 9.0 (Pie) | Android 11 |
| Platform | Android | Android |
| Interface | ColorOS 6.1 | ColorOS 11.1 |
