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- Galaxy A21 vs Galaxy A51
Samsung Galaxy A21 vs Samsung Galaxy A51
What Galaxy A21 does better (2) and where Galaxy A51 wins (15) — every spec side by side.
vs
3.4Display5.0
5.6Camera8.1
2.6Battery2.6
5.0Features5.0
Dimensions
Size comparison
Galaxy A21Galaxy A51
| Galaxy A21 | Galaxy A51 | Difference | |
|---|---|---|---|
| Height | 167.8 mm | 158.5 mm | +9.3 mm |
| Width | 76.7 mm | 73.6 mm | +3.1 mm |
| Thickness | 8.1 mm | 7.9 mm | +0.2 mm |
| Weight | 193 g | 172 g | +21 g |
Drawn to the same scale from the official dimensions (front and side).
Why is Galaxy A21 better than Galaxy A51?
- CPU frequency2.35 GHz vs 2.3 GHz+2%
- Main camera aperturef/1.8 vs f/2+11%
Why is Galaxy A51 better than Galaxy A21?
- Main camera16 MP vs 48 MP3×
- Storage (max)32 GB vs 128 GB4×
- OLED panelNo · Galaxy A21: Yes
- Optical stabilisationNo · Galaxy A21: Yes
- RAM3 GB vs 4 GB+33%
- Pixel density270 ppi vs 407 ppi+51%
- Storage (base)32 GB vs 128 GB4×
- Selfie camera13 MP vs 32 MP2.5×
- Rear cameras2 vs 42×
- Max video1080p vs 4K
- Weight193 g vs 172 g+12%
- Resolution (width)720 px vs 1,080 px+50%
Specifications
Side by side
| Design | ||
| Weight | 193 g | 172 g |
| Thickness | 8.1 mm | 7.9 mm |
| Height | 167.8 mm | 158.5 mm |
| Width | 76.7 mm | 73.6 mm |
| Frame | Plastic | Plastic |
| Back | Plastic | Plastic |
| Glass protection | — | Gorilla Glass 3 |
| Colours | Black | White, Black |
| Display | ||
| Screen size | 6.5″ | 6.5″ |
| Panel | IPS LCD | AMOLED |
| OLED panel | No | Yes |
| Resolution (width) | 720 px | 1,080 px |
| Resolution (height) | 1,600 px | 2,400 px |
| Pixel density | 270 ppi | 407 ppi |
| Refresh rate | 60 Hz | 60 Hz |
| Peak brightness | — | 400 nits |
| Measured brightness | — | 635 nits |
| Screen-to-body ratio | 79.3% | 87.4% |
| Performance | ||
| Chipset | Mediatek MT6765 Helio P35 | Samsung Exynos 9611 |
| Chip maker | MediaTek | Samsung |
| Process | 12 nm | 10 nm |
| CPU cores | 8 | 8 |
| CPU frequency | 2.35 GHz | 2.3 GHz |
| GPU | PowerVR GE8320 | Mali G72 MP3 |
| AnTuTu score | — | 352,699 |
| Geekbench 6 (multi-core) | — | 1,204 |
| Memory | ||
| RAM | 3 GB | 4 GB |
| Storage (max) | 32 GB | 128 GB |
| Storage (base) | 32 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/1.8 | f/2 |
| Main sensor size | 1/3.06" | 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 | 13 MP | 32 MP |
| 4K selfie video | No | No |
| Battery | ||
| Battery capacity | 4,000 mAh | 4,000 mAh |
| Battery type | Li-Po | Li-Po |
| Wired charging | 15 W | 15 W |
| Charged in 30 min | — | 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, BDS | GPS, GLONASS, GALILEO, BDS |
| Features | ||
| Stereo speakers | No | No |
| 3.5 mm headphone jack | Yes | Yes |
| Fingerprint sensor | Rear | Under display |
| Sensors | Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass | proximity, accelerometer, gyro, light, fingerprint |
| SAR (head) | 1.27 W/kg | 0.6 W/kg |
| Software | ||
| OS at launch | Android 10 | Android 10 |
| Platform | Android | Android |
| Interface | One UI 2.0 | One UI 2 |
