Compare phones
| Global Score | |
| 86.5 | 76.7 |
| Basic Information | |
| Samsung | Xiaomi |
| Android 11, 10 | Android 11 |
| 2020-03-05 | 2021-05-27 |
| 6.27 x 2.96 x 0.35 inches | 6.23 x 2.96 x 0.33 inches |
| 6.74 ounces | 6.70 ounces |
| Black, Blue and Red | Moonlight White, Neptune Blue and Space Black, |
| Plastic and Plastic | Glass and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| Display / Screen | |
| 6.4 inches | 6.3 inches |
| 2340 x 1080 pixels | 2340 x 1080 pixels |
| Super AMOLED | IPS LCD |
| 403 pixels per inch | 409 pixels per inch |
| 420 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 8.4 | 8.1 |
| Performance | |
| Exynos 9611 chipset | MediaTek Helio G85 MT6769Z chipset |
| Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor | Cortex-A75, 64-bit, 12 nm (Octa-Core 2000 MHz) processor |
| 6 GB RAM | 4 GB RAM |
| Mali-G72 MP3 GPU | Mali G52 MC2 GPU |
| 9.36 | 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 | |
| 64.00 MP + 32.00 MP | 48.00 MP + 13.00 MP |
| f/1.80 aperture | f/1.80 aperture |
| 26.00mm focal length | -- |
| 0.59 inches (1/1.7") sensor | 0.5 inches (1/2") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 1920 x 1080 (240 fps) (Full HD) slow motion video | 1280 x 720 (120 fps) (HD) slow motion video |
| 12.1 | 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 | |
| 6000mAh Li - Polymer Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 7.52 | 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 |
| FM Radio | -- |
Comparison review
Galaxy M31 is better than Xiaomi Redmi Note 8 2021, with a global score of 86.5 against 76.7. Both of these phones work with the same Android 11 operating system, so both of them should provide the same operating system features. The Galaxy M31 body is older, a little heavier and just a little bit thicker than the Xiaomi Redmi Note 8 2021.
Galaxy M31 has a little better processing power than Xiaomi Redmi Note 8 2021, and although they both have 8 processing cores, the Galaxy M31 also has a higher amount of RAM memory. The Samsung Galaxy M31 counts with just a bit better display than Xiaomi Redmi Note 8 2021, because although it has a just a bit inferior amount of pixels per inch in the display, and they both have an equal 1080 x 2340 pixels resolution, the Samsung Galaxy M31 also counts with a bit bigger display.
Samsung Galaxy M31 has a better camera than Xiaomi Redmi Note 8 2021, and although they both have a same size diafragm aperture, the Samsung Galaxy M31 also has a way better 3840x2160 video definition, a back camera with a much better resolution and a bigger camera sensor capturing higher quality photographs and videos.
The Samsung Galaxy M31 has a better memory capacity to install applications and games or saving photos and videos than Xiaomi Redmi Note 8 2021, and although they both have exactly the same internal memory, the Samsung Galaxy M31 also has a SD memory card expansion slot that admits up to 512 GB. The Galaxy M31 has a really longer battery lifetime than Xiaomi Redmi Note 8 2021, because it has a 6000mAh battery capacity.
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