Compare phones
| Global Score | |
| 81.3 | 91.8 |
| Basic Information | |
| Samsung | Samsung |
| Android 10 | Android 11 |
| 2020-04-27 | 2021-01-29 |
| 6.27 x 2.88 x 0.34 inches | 5.97 x 2.80 x 0.31 inches |
| 6.53 ounces | 6.03 ounces |
| Prism Crush black, Prism Crush blue, Prism Crush red and Prism Crush white | Gray, Phantom pink, Violet and White |
| Plastic | Aluminum and Plastic |
| -- | Scratch-Resistant Glass |
| -- | $ 722.00 |
| Display / Screen | |
| 6.4 inches | 6.2 inches |
| 2400 x 1080 pixels | 2400 x 1080 pixels |
| Super AMOLED | Dynamic AMOLED |
| 411 pixels per inch | 424 pixels per inch |
| -- | 1300 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.1 | 9.2 |
| Performance | |
| MediaTek Helio P65 MT6768 chipset | Qualcomm Snapdragon 888 chipset |
| Arm Cortex-A75 and Arm Cortex-A55, 64-bit, 12 nm (Octa-Core 2000 MHz) processor | Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor |
| 4 GB RAM | 8 GB RAM |
| Mali-G52 MC2 GPU | Adreno 660 GPU |
| 9.09 | 9.63 |
| Storage | |
| 64 GB internal memory | 128 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | No SD card slot |
| 11.74 | 10.1 |
| Camera | |
| 48.00 MP + 20.00 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 |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 7680 x 4320 (24 fps) video resolution |
| -- | 1280 x 720 (960 fps) (HD) slow motion video |
| 10.89 | 10.78 |
| 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 | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 6.8 | 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 |
Comparison review
The Samsung Galaxy S21 has a global score of 91.8, which is much better than Samsung Galaxy A31's 81.3 overall score. These phones work with Android OS (Operating System), but the Samsung Galaxy S21 has the newer 11 version while Samsung Galaxy A31 has Android 10 version. Samsung Galaxy S21's construction is newer, just a little bit thinner and just a little lighter than the Samsung Galaxy A31.
Galaxy S21 has just a little better hardware performance than Samsung Galaxy A31, and although they both have a Octa-Core processor, the Galaxy S21 also has a higher amount of RAM. The Galaxy S21 features a better looking display than Samsung Galaxy A31, because although it has a little smaller display, and they both have the same exact resolution of 1080 x 2400, the Galaxy S21 also counts with a little more pixels per display inch.
Samsung Galaxy A31 features a greater storage to install games and applications than Galaxy S21, because although it has less internal storage capacity, it also counts with an external memory slot that supports a maximum of 512 GB. Galaxy A31 features greater battery lifetime than Galaxy S21, because it has a 25% more battery size.
Samsung Galaxy A31 captures clearer photographs and videos than Samsung Galaxy S21, because although it has a tinier aperture which is not good for low light photography and videos and a smaller back camera sensor shooting worse quality photographs and videos, and they both have the same (Full HD) video resolution, the Samsung Galaxy A31 also counts with faster video frame rates and a lot more MP camera.
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