Compare phones
| Global Score | |
| 81.3 | 76.7 |
| Basic Information | |
| Samsung | Xiaomi |
| Android 10 | Android 11 |
| 2020-04-27 | 2021-05-27 |
| 6.27 x 2.88 x 0.34 inches | 6.23 x 2.96 x 0.33 inches |
| 6.53 ounces | 6.70 ounces |
| Prism Crush black, Prism Crush blue, Prism Crush red and Prism Crush white | Moonlight White, Neptune Blue and Space Black, |
| Plastic | Glass and Plastic |
| -- | Scratch-Resistant Glass |
| Display / Screen | |
| 6.4 inches | 6.3 inches |
| 2400 x 1080 pixels | 2340 x 1080 pixels |
| Super AMOLED | IPS LCD |
| 411 pixels per inch | 409 pixels per inch |
| No touch screen | No touch screen |
| 8.1 | 8.1 |
| Performance | |
| MediaTek Helio P65 MT6768 chipset | MediaTek Helio G85 MT6769Z chipset |
| Arm Cortex-A75 and Arm Cortex-A55, 64-bit, 12 nm (Octa-Core 2000 MHz) processor | Cortex-A75, 64-bit, 12 nm (Octa-Core 2000 MHz) processor |
| 4 GB RAM | 4 GB RAM |
| Mali-G52 MC2 GPU | Mali G52 MC2 GPU |
| 9.09 | 9.09 |
| Storage | |
| 64 GB internal memory | 64 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | microSDXC (up to 128 GB) external memory slot |
| 11.74 | 10.02 |
| Camera | |
| 48.00 MP + 20.00 MP | 48.00 MP + 13.00 MP |
| f/2.00 aperture | f/1.80 aperture |
| 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 |
| -- | 1280 x 720 (120 fps) (HD) slow motion video |
| 10.89 | 11 |
| 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 HSPA |
| Nano SIM, Dual SIM | Nano SIM |
| 6.7 | 6.6 |
| Battery Life | |
| 5000mAh Li - Polymer Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 6.8 | 5.92 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.2 |
| GPS | GPS |
| NFC | -- |
| -- | Infra-red port |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
Comparison review
Galaxy A31 has a global score of 81.3, which is a little bit better than the Xiaomi Redmi Note 8 2021's overall score of 76.7. Both phones in this comparison use Android OS (Operating System), but Galaxy A31 has the older 10 version and Xiaomi Redmi Note 8 2021 has Android 11. The Galaxy A31 is an older and a little thicker cellphone than Xiaomi Redmi Note 8 2021, but Samsung managed to build it a little bit lighter anyway.
Xiaomi Redmi Note 8 2021's processing unit is just as good as the CPU in Galaxy A31, both of them have a 4 GB RAM memory and the same number of cores. Xiaomi Redmi Note 8 2021 has a display that's very similar to the screen in Samsung Galaxy A31, although the Xiaomi Redmi Note 8 2021 has a quite lower resolution of 1080 x 2340, a quite worse pixel density and a little smaller display.
The Xiaomi Redmi Note 8 2021 takes clearer photographs and videos than Samsung Galaxy A31, and although they both have a 0.5 inches camera sensor, the same video quality, a camera with a 48 megapixels and the same video frame rate, the Xiaomi Redmi Note 8 2021 also has a larger camera aperture to take better low-light photography and videos.
The Galaxy A31 has a greater memory for games and applications than Xiaomi Redmi Note 8 2021, and although they both have equal internal memory, the Galaxy A31 also has an external memory card slot that holds up to 512 GB. Samsung Galaxy A31 features longer battery duration than Xiaomi Redmi Note 8 2021, because it has a 25 percent larger battery capacity.
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