Compare phones
| Global Score | |
| 87.7 | 76.1 |
| Basic Information | |
| Samsung | Samsung |
| Android 10 | Android 10 |
| 2020-09-11 | 2020-06-29 |
| 6.45 x 3.00 x 0.37 inches | 6.61 x 3.02 x 0.32 inches |
| 7.51 ounces | 6.81 ounces |
| Black and White | Black |
| Plastic and Plastic | Plastic and Plastic |
| Scratch-Resistant Glass | -- |
| -- | $ 194.00 |
| Display / Screen | |
| 6.7 inches | 6.5 inches |
| 2340 x 1080 pixels | 1600 x 720 pixels |
| Super AMOLED Plus | IPS LCD |
| 385 pixels per inch | 270 pixels per inch |
| No touch screen | No touch screen |
| 8 | 7.3 |
| Performance | |
| Qualcomm Snapdragon 730 SM7150-AA chipset | Mediatek Helio P35 chipset |
| Kryo 470, 64-bit, 8 nm (Octa-Core 2200 MHz) processor | Arm Cortex-A53, 64-bit, 12 nm (Octa-Core 2300 MHz) processor |
| 6 GB RAM | 3 GB RAM |
| Adreno 618 GPU | PowerVR GE8320 GPU |
| 9.27 | 9.27 |
| 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 | 16.00 MP + 13.00 MP |
| f/1.80 aperture | f/1.80 aperture |
| 26.00mm focal length | -- |
| 0.57 inches (1/1.76") sensor | 0.33 inches (1/3.06") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 11.88 | 9.35 |
| 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 |
| 6.7 | 6.7 |
| Battery Life | |
| 7000mAh Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 8.32 | 5.92 |
| 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, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
The Samsung Galaxy M51 has an overall score of 87.7, which is much better than the Samsung Galaxy A21's general score of 76.1. Both of these phones work with the same Android 10 OS (operating system), so both of them should provide you identical OS features. Even being the best we are comparing, we must tell that it's also somewhat thicker and just a little bit heavier.
The Galaxy M51 and the Galaxy A21 both count with quite similar processors, and although the Galaxy A21 has less RAM memory, they both have a Octa-Core CPU. The Galaxy M51 counts with a little more vivid display than Galaxy A21, because it has a little bit larger display, a much higher 1080 x 2340 pixels resolution and a better number of pixels per screen inch.
Samsung Galaxy M51 takes greater pictures and videos than Galaxy A21, and although they both have a same size aperture, the Samsung Galaxy M51 also has a back-facing camera with a way higher 64 MP resolution, a lot higher video quality and a much larger sensor providing a way better image quality.
Samsung Galaxy M51 has a much bigger storage capacity for games and applications than Samsung Galaxy A21, and although they both have an external SD slot that supports up to 512 GB, the Samsung Galaxy M51 also has 96 GB more internal memory capacity. Samsung Galaxy M51 features a very superior battery lifetime than Galaxy A21, because it has a 7000mAh battery size.
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