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- Galaxy A21s vs Y51 (2020, December)
Samsung Galaxy A21s vs Vivo Y51 (2020, December)
What Galaxy A21s does better (2) and where Y51 (2020, December) wins (11) — every spec side by side.
vs
3.4Display4.6
5.7Camera6.5
4.0Battery4.6
5.0Features3.9
Dimensions
Size comparison
Galaxy A21sY51 (2020, December)
| Galaxy A21s | Y51 (2020, December) | Difference | |
|---|---|---|---|
| Height | 163.7 mm | 163.9 mm | −0.2 mm |
| Width | 75.3 mm | 75.3 mm | = |
| Thickness | 8.9 mm | 8.4 mm | +0.5 mm |
| Weight | 192 g | 188 g | +4 g |
Drawn to the same scale from the official dimensions (front and side).
Why is Galaxy A21s better than Y51 (2020, December)?
- NFCYes · Y51 (2020, December): No
- Process8 nm vs 11 nm+38%
Why is Y51 (2020, December) better than Galaxy A21s?
- RAM6 GB vs 8 GB+33%
- Wired charging15 W vs 18 W+20%
- Pixel density270 ppi vs 401 ppi+49%
- Storage (base)32 GB vs 128 GB4×
- Max video1080p vs 4K
- Weight192 g vs 188 g+2%
- Resolution (width)720 px vs 1,080 px+50%
- Selfie camera13 MP vs 16 MP+23%
- Main camera aperturef/2 vs f/1.8+11%
- Thickness8.9 mm vs 8.4 mm+6%
- Screen-to-body ratio82.8% vs 84.5%+2%
Specifications
Side by side
| Design | ||
| Weight | 192 g | 188 g |
| Thickness | 8.9 mm | 8.4 mm |
| Height | 163.7 mm | 163.9 mm |
| Width | 75.3 mm | 75.3 mm |
| Frame | Plastic | — |
| Back | Plastic | — |
| Colours | Black, White, Blue, Red | Titanium Sapphire, Crystal Symphony |
| Display | ||
| Screen size | 6.5″ | 6.6″ |
| Panel | PLS LCD | IPS LCD |
| OLED panel | No | No |
| Resolution (width) | 720 px | 1,080 px |
| Resolution (height) | 1,600 px | 2,408 px |
| Pixel density | 270 ppi | 401 ppi |
| Refresh rate | 60 Hz | 60 Hz |
| Peak brightness | 540 nits | — |
| Measured brightness | 490 nits | — |
| Screen-to-body ratio | 82.8% | 84.5% |
| Performance | ||
| Chipset | Exynos 850 | Qualcomm SDM665 Snapdragon 665 |
| Chip maker | Exynos | Qualcomm |
| Process | 8 nm | 11 nm |
| CPU cores | 8 | 8 |
| CPU frequency | 2 GHz | 2 GHz |
| GPU | Mali-G52 | Adreno 610 |
| AnTuTu score | 107,157 | — |
| Geekbench 6 (multi-core) | 1,100 | — |
| Memory | ||
| RAM | 6 GB | 8 GB |
| Storage (max) | 128 GB | 128 GB |
| Storage (base) | 32 GB | 128 GB |
| Storage type | eMMC 5.1 | — |
| Memory card slot | Yes | Yes |
| Camera | ||
| Main camera | 48 MP | 48 MP |
| Main camera aperture | f/2 | f/1.8 |
| Main sensor size | 1/2.0" | 1/2.0" |
| Rear cameras | 2 | 2 |
| Optical stabilisation | No | No |
| Ultra-wide camera | Yes | Yes |
| Telephoto camera | No | No |
| Max video | 1080p | 4K |
| 4K video frame rate | — | 30 fps |
| Selfie camera | 13 MP | 16 MP |
| 4K selfie video | No | No |
| Battery | ||
| Battery capacity | 5,000 mAh | 5,000 mAh |
| Battery type | Li-Po | — |
| Wired charging | 15 W | 18 W |
| Charged in 30 min | 25% | — |
| Wireless charging | No | No |
| Connectivity | ||
| 5G | No | — |
| eSIM | No | No |
| Dual SIM | Yes | Yes |
| Wi-Fi standard | Wi-Fi 5 | Wi-Fi 5 |
| Bluetooth | 5 | 5 |
| NFC | Yes | No |
| USB | USB Type-C 2.0 | USB Type-C 2.0 |
| USB version | 2 | 2 |
| Satellite navigation | GLONASS, GALILEO, BDS | GLONASS, GALILEO, BDS |
| Features | ||
| Stereo speakers | No | No |
| 3.5 mm headphone jack | Yes | Yes |
| Loudspeaker loudness | -30 LUFS | — |
| Fingerprint sensor | Rear | Side |
| Sensors | Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass | Fingerprint (side-mounted), accelerometer, gyro, proximity, compass |
| SAR (head) | 0.42 W/kg | — |
| Software | ||
| OS at launch | Android 10 | Android 11 |
| Platform | Android | Android |
| Interface | One UI 4.1 | Funtouch 11 |
