Compare phones
| Global Score | |
| 81.3 | 77.7 |
| Basic Information | |
| Samsung | Samsung |
| Android 10 | Android 10 |
| 2020-04-27 | 2020-06-19 |
| 6.27 x 2.88 x 0.34 inches | 6.44 x 2.96 x 0.35 inches |
| 6.53 ounces | 6.77 ounces |
| Prism Crush black, Prism Crush blue, Prism Crush red and Prism Crush white | Black, Blue, Red and White |
| Plastic | -- |
| Display / Screen | |
| 6.4 inches | 6.5 inches |
| 2400 x 1080 pixels | 1600 x 720 pixels |
| Super AMOLED | TFT |
| 411 pixels per inch | 270 pixels per inch |
| No touch screen | No touch screen |
| 8.1 | 7.2 |
| Performance | |
| MediaTek Helio P65 MT6768 chipset | Samsung Exynos 850 chipset |
| Arm Cortex-A75 and Arm Cortex-A55, 64-bit, 12 nm (Octa-Core 2000 MHz) processor | Arm Cortex-A55, 64-bit (Octa-Core 2000 MHz) processor |
| 4 GB RAM | 3 GB RAM |
| Mali-G52 MC2 GPU | Mali-G76 GPU |
| 9.09 | 9.09 |
| Storage | |
| 64 GB internal memory | 32 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 11.74 | 9.84 |
| Camera | |
| 48.00 MP + 20.00 MP | 48.00 MP + 13.00 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 | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 10.89 | 10.78 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM, Dual SIM |
| 6.7 | 6.7 |
| Battery Life | |
| 5000mAh Li - Polymer Battery | 5000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 6.8 | 6.8 |
| 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, Gyroscope and Proximity Sensor |
Comparison review
Galaxy A31 is slightly better than Galaxy A21s, with an 81.3 score against 77.7. These phones work with the same Android 10 OS (Operating System). Galaxy A31's construction is a little bit lighter and just a bit thinner than the Galaxy A21s, although both of them were only released 2 months apart. The Samsung Galaxy A31 features a better screen than Samsung Galaxy A21s, because although it has a little bit smaller screen, it also counts with a lot greater quantity of pixels per inch of display and a lot higher 1080 x 2400 pixels resolution.
The Galaxy A21s's CPU is just as good as the processor in Galaxy A31, and although the Galaxy A21s has less RAM memory, they both have 8 cores. The Galaxy A31 takes a little bit better videos and photos than Galaxy A21s. They have a camera with a 48 mega pixels resolution, a same size camera aperture, the same video resolution, a same size sensor and the same video frame rate.
Samsung Galaxy A31 counts with a better storage capacity for applications and games than Samsung Galaxy A21s, and although they both have a slot for an external memory card that allows a maximum of 512 GB, the Samsung Galaxy A31 also has 64 GB internal storage. Galaxy A21s's battery performance is just as good as the battery lifetime in Galaxy A31.
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