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