Compare phones
| Global Score | |
| 84.1 | 90.8 |
| Basic Information | |
| Samsung | Samsung |
| Android 11, 10 | Android 11, 10 |
| 2020-03-23 | 2020-04-29 |
| 6.26 x 2.96 x 0.35 inches | 6.26 x 2.90 x 0.34 inches |
| 6.63 ounces | 6.60 ounces |
| Midnight blue and Raven black | Prism cube black |
| Plastic and Plastic | Aluminum and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| -- | $ 339.00 |
| Display / Screen | |
| 6.4 inches | 6.5 inches |
| 2340 x 1080 pixels | 2400 x 1080 pixels |
| Super AMOLED | Super AMOLED |
| 403 pixels per inch | 405 pixels per inch |
| 420 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 8.4 | 8.1 |
| Performance | |
| Exynos 9611 chipset | Samsung Exynos 980 chipset |
| Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor | ARM Cortex-A77 and ARM Cortex-A55, 64-bit, 8 nm (Octa-Core 2200 MHz) processor |
| 4 GB RAM | 6 GB RAM |
| Mali-G72 MP3 GPU | Mali-G76 MP5 GPU |
| 9.27 | 9.27 |
| Storage | |
| 64 GB internal memory | 128 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | microSDXC (up to 1000 GB) external memory slot |
| 11.74 | 15.38 |
| Camera | |
| 48.00 MP + 20.00 MP | 48.00 MP + 32.00 MP |
| f/2.00 aperture | f/2.00 aperture |
| 26.00mm focal length | 26.00mm focal length |
| 0.5 inches (1/2") sensor | 0.5 inches (1/2") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 1920 x 1080 (240 fps) (Full HD) slow motion video | 1280 x 720 (480 fps) (HD) slow motion video |
| 11.55 | 11.55 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM |
| 6.7 | 10.7 |
| Battery Life | |
| 6000mAh Li - Polymer Battery | 4500mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 7.52 | 6.32 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| -- | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Gyroscope and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
The Samsung Galaxy A51 5G has a general score of 90.8, which is slightly better than Galaxy M21's global score of 84.1. These phones come with the same Android 11 OS. The Samsung Galaxy A51 5G is a just a little bit thinner and a little bit lighter device than the Galaxy M21, even when they were released with only a few months difference.
The Galaxy M21 and the Samsung Galaxy A51 5G count with extremely similar processing units, and although the Samsung Galaxy A51 5G has a greater amount of RAM, they both have 8 processing cores. The Galaxy M21 counts with a bit more vivid display than Galaxy A51 5G, although it has a little worse resolution of 1080 x 2340, a bit smaller screen and a just a bit lower screen pixel density.
Galaxy A51 5G features a way bigger storage capacity for games and applications than Galaxy M21, because it has an external memory card slot that holds up to 1000 GB and more internal storage capacity. Galaxy M21 has longer battery life than Samsung Galaxy A51 5G, because it has a 33% bigger battery size.
The Galaxy A51 5G's camera is very similar to the camera in Samsung Galaxy M21, both have a 0.5 inches camera sensor, the same video quality, a same resolution back-facing camera, the same diafragm aperture and the same video frame rate.
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