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- Galaxy M21 vs Y51 (2020, September)
Samsung Galaxy M21 vs Vivo Y51 (2020, September)
What Galaxy M21 does better (7) and where Y51 (2020, September) wins (4) — every spec side by side.
vs
5.0Display6.0
6.7Camera6.0
6.6Battery3.0
5.0Features3.9
Dimensions
Size comparison
Galaxy M21Y51 (2020, September)
| Galaxy M21 | Y51 (2020, September) | Difference | |
|---|---|---|---|
| Height | 159 mm | 159.3 mm | −0.3 mm |
| Width | 75.1 mm | 75.2 mm | −0.1 mm |
| Thickness | 8.9 mm | 8.7 mm | +0.2 mm |
| Weight | 188 g | 187 g | +1 g |
Drawn to the same scale from the official dimensions (front and side).
Why is Galaxy M21 better than Y51 (2020, September)?
- Battery capacity6,000 mAh vs 4,500 mAh+33%
- RAM6 GB vs 4 GB+50%
- NFCYes · Y51 (2020, September): No
- Max video4K vs 1080p
- CPU frequency2.3 GHz vs 2 GHz+15%
- Selfie camera20 MP vs 16 MP+25%
- Process10 nm vs 11 nm+10%
Why is Y51 (2020, September) better than Galaxy M21?
- Wired charging15 W vs 18 W+20%
- Storage (base)64 GB vs 128 GB2×
- Main camera aperturef/2 vs f/1.8+11%
- Thickness8.9 mm vs 8.7 mm+2%
Specifications
Side by side
| Design | ||
| Weight | 188 g | 187 g |
| Thickness | 8.9 mm | 8.7 mm |
| Height | 159 mm | 159.3 mm |
| Width | 75.1 mm | 75.2 mm |
| Frame | Plastic | — |
| Back | Plastic | — |
| Glass protection | Corning Gorilla Glass 3 | — |
| Colours | Midnight Blue, Raven Black | Mystic Black, Jazzy Blue, Dreamy White |
| Display | ||
| Screen size | 6.4″ | 6.4″ |
| Panel | Super AMOLED | Super AMOLED |
| OLED panel | Yes | Yes |
| Resolution (width) | 1,080 px | 1,080 px |
| Resolution (height) | 2,340 px | 2,340 px |
| Pixel density | 403 ppi | 404 ppi |
| Refresh rate | 60 Hz | 60 Hz |
| Peak brightness | 420 nits | — |
| Measured brightness | 608 nits | — |
| Screen-to-body ratio | 84.2% | 83.4% |
| Performance | ||
| Chipset | Exynos 9611 | Qualcomm SDM665 Snapdragon 665 |
| Chip maker | Exynos | Qualcomm |
| Process | 10 nm | 11 nm |
| CPU cores | 8 | 8 |
| CPU frequency | 2.3 GHz | 2 GHz |
| GPU | Mali-G72 MP3 | Adreno 610 |
| AnTuTu score | 355,351 | — |
| Geekbench 6 (multi-core) | 1,139 | — |
| Memory | ||
| RAM | 6 GB | 4 GB |
| Storage (max) | 128 GB | 128 GB |
| Storage (base) | 64 GB | 128 GB |
| Storage type | UFS 2.1 | — |
| 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 | 4K | 1080p |
| 4K video frame rate | 30 fps | — |
| Selfie camera | 20 MP | 16 MP |
| 4K selfie video | No | No |
| Battery | ||
| Battery capacity | 6,000 mAh | 4,500 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 |
| Fingerprint sensor | Rear | Under display |
| Sensors | Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass | Fingerprint (under display, optical), accelerometer, gyro, proximity, compass |
| SAR (head) | 0.47 W/kg | — |
| Software | ||
| OS at launch | Android 10 | Android 10 |
| Platform | Android | Android |
| Interface | One UI 3.1 Core | Funtouch 10 |
