Compare phones
| Global Score | |
| 77.7 | 90.8 |
| Basic Information | |
| Samsung | Samsung |
| Android 10 | Android 11, 10 |
| 2020-06-19 | 2020-04-29 |
| 6.44 x 2.96 x 0.35 inches | 6.26 x 2.90 x 0.34 inches |
| 6.77 ounces | 6.60 ounces |
| Black, Blue, Red and White | Prism cube black |
| -- | Aluminum and Plastic |
| -- | Scratch-Resistant Glass |
| -- | $ 339.00 |
| Display / Screen | |
| 6.5 inches | 6.5 inches |
| 1600 x 720 pixels | 2400 x 1080 pixels |
| TFT | Super AMOLED |
| 270 pixels per inch | 405 pixels per inch |
| No touch screen | No touch screen |
| 7.2 | 8.1 |
| Performance | |
| Samsung Exynos 850 chipset | Samsung Exynos 980 chipset |
| Arm Cortex-A55, 64-bit (Octa-Core 2000 MHz) processor | ARM Cortex-A77 and ARM Cortex-A55, 64-bit, 8 nm (Octa-Core 2200 MHz) processor |
| 3 GB RAM | 6 GB RAM |
| Mali-G76 GPU | Mali-G76 MP5 GPU |
| 9.09 | 9.27 |
| Storage | |
| 32 GB internal memory | 128 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | microSDXC (up to 1000 GB) external memory slot |
| 9.84 | 15.38 |
| Camera | |
| 48.00 MP + 13.00 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 |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| -- | 1280 x 720 (480 fps) (HD) slow motion video |
| 10.78 | 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 | |
| 5000mAh Li - Polymer Battery | 4500mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 6.8 | 6.32 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Gyroscope and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| -- | FM Radio |
Comparison review
The Samsung Galaxy A51 5G is better than Galaxy A21s, getting a 90.8 score against 77.7. These devices come with Android OS (operating system), but Samsung Galaxy A51 5G has the newer 11 version while Galaxy A21s has Android 10 version. The Samsung Galaxy A51 5G design is just a bit thinner and just a little bit lighter than Galaxy A21s, even though both of them were released only 2 months apart.
Galaxy A51 5G counts with a brighter screen than Samsung Galaxy A21s, and although they both have a same size display, the Galaxy A51 5G also has a higher pixels density and a way better 1080 x 2400px resolution. Galaxy A51 5G has a little bit better hardware performance than Samsung Galaxy A21s, and although they both have a Octa-Core processing unit, the Galaxy A51 5G also has a higher amount of RAM memory.
The Samsung Galaxy A51 5G has a lot bigger memory capacity to store more apps and games than Samsung Galaxy A21s, because it has a SD extension slot that supports a maximum of 1000 GB and 128 GB internal memory. Galaxy A21s has a bit better battery performance than Samsung Galaxy A51 5G, because it has 5000mAh of battery capacity against 4500mAh.
Galaxy A51 5G features just a bit better camera than Galaxy A21s, and although they both have the same resolution back-facing camera, the same back-facing camera sensor size and a same size camera aperture, the Galaxy A51 5G also has a way higher video quality.
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