Compare phones
| Global Score | |
| 87.7 | 77.7 |
| Basic Information | |
| Samsung | Samsung |
| Android 10 | Android 10 |
| 2020-09-11 | 2020-06-19 |
| 6.45 x 3.00 x 0.37 inches | 6.44 x 2.96 x 0.35 inches |
| 7.51 ounces | 6.77 ounces |
| Black and White | Black, Blue, Red and White |
| Plastic and Plastic | -- |
| Scratch-Resistant Glass | -- |
| Display / Screen | |
| 6.7 inches | 6.5 inches |
| 2340 x 1080 pixels | 1600 x 720 pixels |
| Super AMOLED Plus | TFT |
| 385 pixels per inch | 270 pixels per inch |
| No touch screen | No touch screen |
| 8 | 7.2 |
| Performance | |
| Qualcomm Snapdragon 730 SM7150-AA chipset | Samsung Exynos 850 chipset |
| Kryo 470, 64-bit, 8 nm (Octa-Core 2200 MHz) processor | Arm Cortex-A55, 64-bit (Octa-Core 2000 MHz) processor |
| 6 GB RAM | 3 GB RAM |
| Adreno 618 GPU | Mali-G76 GPU |
| 9.27 | 9.09 |
| Storage | |
| 128 GB internal memory | 32 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 14.14 | 9.84 |
| Camera | |
| 64.00 MP + 32.00 MP | 48.00 MP + 13.00 MP |
| f/1.80 aperture | f/2.00 aperture |
| 26.00mm focal length | 26.00mm focal length |
| 0.57 inches (1/1.76") sensor | 0.5 inches (1/2") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 11.88 | 10.78 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM, Dual SIM |
| 6.7 | 6.7 |
| Battery Life | |
| 7000mAh Battery | 5000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 8.32 | 6.8 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Gyroscope and Proximity Sensor |
| FM Radio | -- |
Comparison review
The Samsung Galaxy M51 is much better than Samsung Galaxy A21s, getting a general score of 87.7 against 77.7. Both of these phones include the same Android 10 OS. The Samsung Galaxy M51 is an a bit heavier and just a little bit thicker phone than the Samsung Galaxy A21s. Galaxy M51 features a bit more powerful processor than Galaxy A21s, and although they both have a Octa-Core processing unit, the Galaxy M51 also has more RAM memory.
Galaxy M51 has a sharper display than Galaxy A21s, because it has a greater screen pixels density, a way higher 1080 x 2340 resolution and a little larger screen. The Samsung Galaxy M51 has a better camera than Galaxy A21s, because it has a way higher 3840x2160 (4K) video definition, a bigger camera aperture to take better low light photography and videos, a back-facing camera with a lot higher 64 megapixels resolution and a larger sensor capturing higher quality videos and photographs.
The Samsung Galaxy M51 counts with a way bigger memory capacity for applications and games than Samsung Galaxy A21s, and although they both have a slot for an external memory card that allows up to 512 GB, the Samsung Galaxy M51 also has more internal storage capacity. Galaxy M51 has a much longer battery life than Samsung Galaxy A21s, because it has 7000mAh of battery capacity against 5000mAh.
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