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- Galaxy A40 vs Galaxy A51
Samsung Galaxy A40 vs Samsung Galaxy A51
What Galaxy A40 does better (6) and where Galaxy A51 wins (14) — every spec side by side.
vs
5.4Display5.0
2.1Performance2.6
5.7Camera8.1
2.5Battery2.6
5.0Features5.0
Dimensions
Size comparison
Galaxy A40Galaxy A51
| Galaxy A40 | Galaxy A51 | Difference | |
|---|---|---|---|
| Height | 144.4 mm | 158.5 mm | −14.1 mm |
| Width | 69.2 mm | 73.6 mm | −4.4 mm |
| Thickness | 7.9 mm | 7.9 mm | = |
| Weight | 140 g | 172 g | −32 g |
Drawn to the same scale from the official dimensions (front and side).
Why is Galaxy A40 better than Galaxy A51?
- Geekbench 6 (multi-core)1,530 vs 1,204+27%
- Peak brightness548 nits vs 400 nits+37%
- Weight140 g vs 172 g+23%
- Pixel density439 ppi vs 407 ppi+8%
- Main camera aperturef/1.7 vs f/2+18%
- Charged in 30 min38% vs 34%+12%
Why is Galaxy A51 better than Galaxy A40?
- Main camera16 MP vs 48 MP3×
- AnTuTu score208,315 vs 352,699+69%
- Battery capacity3,100 mAh vs 4,000 mAh+29%
- Storage (max)64 GB vs 128 GB2×
- Optical stabilisationNo · Galaxy A40: Yes
- CPU frequency1.8 GHz vs 2.3 GHz+28%
- Storage (base)64 GB vs 128 GB2×
- Rear cameras2 vs 42×
- Ultra-wide cameraNo · Galaxy A40: Yes
- Measured brightness544 nits vs 635 nits+17%
- Screen size5.9″ vs 6.5″+10%
- Process14 nm vs 10 nm+40%
Specifications
Side by side
| Design | ||
| Weight | 140 g | 172 g |
| Thickness | 7.9 mm | 7.9 mm |
| Height | 144.4 mm | 158.5 mm |
| Width | 69.2 mm | 73.6 mm |
| Frame | Plastic | Plastic |
| Back | Plastic | Plastic |
| Glass protection | Corning Gorilla Glass 3 | Gorilla Glass 3 |
| Colours | White, Black, Blue | White, Black |
| Display | ||
| Screen size | 5.9″ | 6.5″ |
| Panel | AMOLED | AMOLED |
| OLED panel | Yes | Yes |
| Resolution (width) | 1,080 px | 1,080 px |
| Resolution (height) | 2,340 px | 2,400 px |
| Pixel density | 439 ppi | 407 ppi |
| Refresh rate | 60 Hz | 60 Hz |
| Peak brightness | 548 nits | 400 nits |
| Measured brightness | 544 nits | 635 nits |
| Screen-to-body ratio | 85.5% | 87.4% |
| Performance | ||
| Chipset | Samsung Exynos 7904 | Samsung Exynos 9611 |
| Chip maker | Samsung | Samsung |
| Process | 14 nm | 10 nm |
| CPU cores | 8 | 8 |
| CPU frequency | 1.8 GHz | 2.3 GHz |
| GPU | Mali G71 MP2 | Mali G72 MP3 |
| AnTuTu score | 208,315 | 352,699 |
| Geekbench 6 (multi-core) | 1,530 | 1,204 |
| Memory | ||
| RAM | 4 GB | 4 GB |
| Storage (max) | 64 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 | 16 MP | 48 MP |
| Main camera aperture | f/1.7 | f/2 |
| Main sensor size | — | 1/2" |
| Rear cameras | 2 | 4 |
| Optical stabilisation | No | Yes |
| Ultra-wide camera | No | Yes |
| Telephoto camera | No | No |
| Max video | 4K | 4K |
| 4K video frame rate | 30 fps | 30 fps |
| Selfie camera | 25 MP | 32 MP |
| 4K selfie video | No | No |
| Battery | ||
| Battery capacity | 3,100 mAh | 4,000 mAh |
| Battery type | Li-Ion | Li-Po |
| Wired charging | 15 W | 15 W |
| Charged in 30 min | 38% | 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 | USB Type-C |
| USB version | 2 | 2 |
| Satellite navigation | GPS, GLONASS, BDS | GPS, GLONASS, GALILEO, BDS |
| Features | ||
| Stereo speakers | No | No |
| 3.5 mm headphone jack | Yes | Yes |
| Fingerprint sensor | Rear | Under display |
| Sensors | proximity, accelerometer, compass, fingerprint | proximity, accelerometer, gyro, light, fingerprint |
| SAR (head) | 0.49 W/kg | 0.6 W/kg |
| Software | ||
| OS at launch | Android 9.0 | Android 10 |
| Platform | Android | Android |
| Interface | One UI | One UI 2 |
