Compare phones
| Global Score | |
| 90.8 | 91.8 |
| Basic Information | |
| Samsung | Samsung |
| Android 11, 10 | Android 11 |
| 2020-04-29 | 2021-01-29 |
| 6.26 x 2.90 x 0.34 inches | 5.97 x 2.80 x 0.31 inches |
| 6.60 ounces | 6.03 ounces |
| Prism cube black | Gray, Phantom pink, Violet and White |
| Aluminum and Plastic | Aluminum and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 339.00 | $ 722.00 |
| Display / Screen | |
| 6.5 inches | 6.2 inches |
| 2400 x 1080 pixels | 2400 x 1080 pixels |
| Super AMOLED | Dynamic AMOLED |
| 405 pixels per inch | 424 pixels per inch |
| -- | 1300 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.1 | 9.2 |
| Performance | |
| Samsung Exynos 980 chipset | Qualcomm Snapdragon 888 chipset |
| ARM Cortex-A77 and ARM Cortex-A55, 64-bit, 8 nm (Octa-Core 2200 MHz) processor | Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor |
| 6 GB RAM | 8 GB RAM |
| Mali-G76 MP5 GPU | Adreno 660 GPU |
| 9.27 | 9.63 |
| Storage | |
| 128 GB internal memory | 128 GB internal memory |
| microSDXC (up to 1000 GB) external memory slot | No SD card slot |
| 15.38 | 10.1 |
| Camera | |
| 48.00 MP + 32.00 MP | 12.00 MP + 10.00 MP |
| f/2.00 aperture | f/1.80 aperture |
| 26.00mm focal length | 26.00mm focal length |
| 0.5 inches (1/2") sensor | 0.57 inches (1/1.76") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 7680 x 4320 (24 fps) video resolution |
| 1280 x 720 (480 fps) (HD) slow motion video | 1280 x 720 (960 fps) (HD) slow motion video |
| 11.55 | 10.78 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM | Nano SIM |
| 10.7 | 10.7 |
| Battery Life | |
| 4500mAh Li - Polymer Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 6.32 | 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, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
The Samsung Galaxy S21 is a little bit better than the Galaxy A51 5G, with a score of 91.8 against 90.8. Both of these devices come with the same Android 11 OS (operating system). Samsung Galaxy S21's construction is newer, just a little bit lighter and just a little thinner than Galaxy A51 5G. The Galaxy S21 counts with a bit better CPU than Samsung Galaxy A51 5G, and although they both have 8 cores, the Galaxy S21 also has a greater amount of RAM memory.
Galaxy S21 has a much better screen than Samsung Galaxy A51 5G, because although it has a little bit smaller display, and they both have exactly the same resolution of 1080 x 2400, the Galaxy S21 also counts with a bit higher pixel density. Galaxy A51 5G captures a bit better photos and videos than Galaxy S21, because although it has a smaller diafragm aperture which is not favorable for low-light photos and videos and a tinier back-facing camera sensor which gives a lower photo and video quality, and they both have the same 3840x2160 video definition, the Galaxy A51 5G also counts with better video frame rate and a back-facing camera with a way better 48 MP resolution.
Samsung Galaxy A51 5G has much more storage for apps and games than Samsung Galaxy S21, and although they both have the same internal memory capacity, the Samsung Galaxy A51 5G also has a SD card slot that supports up to 1000 GB. Galaxy A51 5G has a bit superior battery duration than Galaxy S21, because it has 4500mAh of battery capacity.
Although Samsung Galaxy S21 is a better device, it costs a lot more money than Galaxy A51 5G, and it doesn't have such a good price and quality relation as the Galaxy A51 5G. If you are trying to save some money, you can get the Galaxy A51 5G, giving up a couple features and specs, but you will get the most out of your savings.
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