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- Galaxy A31 vs Galaxy A51
Samsung Galaxy A31 vs Samsung Galaxy A51
What Galaxy A31 does better (4) and where Galaxy A51 wins (12) — every spec side by side.
vs
5.7Display5.0
3.6Performance2.6
6.2Camera8.1
4.0Battery2.6
5.0Features5.0
Dimensions
Size comparison
Galaxy A31Galaxy A51
| Galaxy A31 | Galaxy A51 | Difference | |
|---|---|---|---|
| Height | 159.3 mm | 158.5 mm | +0.8 mm |
| Width | 73.1 mm | 73.6 mm | −0.5 mm |
| Thickness | 8.6 mm | 7.9 mm | +0.7 mm |
| Weight | 185 g | 172 g | +13 g |
Drawn to the same scale from the official dimensions (front and side).
Why is Galaxy A31 better than Galaxy A51?
- Geekbench 6 (multi-core)5,096 vs 1,2044.2×
- RAM8 GB vs 4 GB2×
- Battery capacity5,000 mAh vs 4,000 mAh+25%
- Peak brightness600 nits vs 400 nits+50%
Why is Galaxy A51 better than Galaxy A31?
- AnTuTu score151,815 vs 352,6992.3×
- Optical stabilisationNo · Galaxy A31: Yes
- Storage (base)64 GB vs 128 GB2×
- Rear cameras2 vs 42×
- Max video1080p vs 4K
- CPU frequency2 GHz vs 2.3 GHz+15%
- Weight185 g vs 172 g+8%
- Selfie camera20 MP vs 32 MP+60%
- Charged in 30 min25% vs 34%+36%
- Process12 nm vs 10 nm+20%
- Thickness8.6 mm vs 7.9 mm+9%
- Screen-to-body ratio84.9% vs 87.4%+3%
Specifications
Side by side
| Design | ||
| Weight | 185 g | 172 g |
| Thickness | 8.6 mm | 7.9 mm |
| Height | 159.3 mm | 158.5 mm |
| Width | 73.1 mm | 73.6 mm |
| Frame | Plastic | Plastic |
| Back | Plastic | Plastic |
| Glass protection | — | Gorilla Glass 3 |
| Colours | Prism Crush Black, Prism Crush Blue, Prism Crush Red, Prism Crush White | White, Black |
| Display | ||
| Screen size | 6.4″ | 6.5″ |
| Panel | Super AMOLED | AMOLED |
| OLED panel | Yes | Yes |
| Resolution (width) | 1,080 px | 1,080 px |
| Resolution (height) | 2,400 px | 2,400 px |
| Pixel density | 411 ppi | 407 ppi |
| Refresh rate | 60 Hz | 60 Hz |
| Peak brightness | 600 nits | 400 nits |
| Measured brightness | 635 nits | 635 nits |
| Screen-to-body ratio | 84.9% | 87.4% |
| Performance | ||
| Chipset | Mediatek MT6768 Helio P65 | Samsung Exynos 9611 |
| Chip maker | MediaTek | Samsung |
| Process | 12 nm | 10 nm |
| CPU cores | 8 | 8 |
| CPU frequency | 2 GHz | 2.3 GHz |
| GPU | Mali-G52 MC2 | Mali G72 MP3 |
| AnTuTu score | 151,815 | 352,699 |
| Geekbench 6 (multi-core) | 5,096 | 1,204 |
| Memory | ||
| RAM | 8 GB | 4 GB |
| Storage (max) | 128 GB | 128 GB |
| Storage (base) | 64 GB | 128 GB |
| Storage type | eMMC 5.1 | UFS 2.0 |
| Memory card slot | Yes | Yes |
| Camera | ||
| Main camera | 48 MP | 48 MP |
| Main camera aperture | f/2 | f/2 |
| Main sensor size | 1/2.0" | 1/2" |
| Rear cameras | 2 | 4 |
| Optical stabilisation | No | Yes |
| Ultra-wide camera | Yes | Yes |
| Telephoto camera | No | No |
| Max video | 1080p | 4K |
| 4K video frame rate | — | 30 fps |
| Selfie camera | 20 MP | 32 MP |
| 4K selfie video | No | No |
| Battery | ||
| Battery capacity | 5,000 mAh | 4,000 mAh |
| Battery type | Li-Po | Li-Po |
| Wired charging | 15 W | 15 W |
| Charged in 30 min | 25% | 34% |
| 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 | Yes | Yes |
| USB | USB Type-C 2.0 | USB Type-C |
| USB version | 2 | 2 |
| Satellite navigation | GLONASS, GALILEO, BDS | GPS, GLONASS, GALILEO, BDS |
| Features | ||
| Stereo speakers | No | No |
| 3.5 mm headphone jack | Yes | Yes |
| Loudspeaker loudness | -30.9 LUFS | — |
| Fingerprint sensor | Under display | Under display |
| Sensors | Fingerprint (under display, optical), accelerometer, gyro, compass | proximity, accelerometer, gyro, light, fingerprint |
| SAR (head) | 0.49 W/kg | 0.6 W/kg |
| Software | ||
| OS at launch | Android 10 | Android 10 |
| Platform | Android | Android |
| Interface | One UI 4.1 | One UI 2 |
