Compare phones
| Global Score | |
| 83.8 | 81.3 |
| Basic Information | |
| Xiaomi | Samsung |
| -- | Android 10 |
| 2018-11-01 | 2020-04-27 |
| 6.22 x 2.94 x 0.33 inches | 6.27 x 2.88 x 0.34 inches |
| 7.69 ounces | 6.53 ounces |
| Black, Blue and Green | Prism Crush black, Prism Crush blue, Prism Crush red and Prism Crush white |
| Aluminum and Ceramic | Plastic |
| Display / Screen | |
| 6.4 inches | 6.4 inches |
| 2340 x 1080 pixels | 2400 x 1080 pixels |
| Super AMOLED | Super AMOLED |
| 403 pixels per inch | 411 pixels per inch |
| 600 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 8.6 | 8.1 |
| Performance | |
| Qualcomm Snapdragon 845 SDM845 chipset | MediaTek Helio P65 MT6768 chipset |
| Kryo 385, 64-bit, 10 nm (Octa-Core 2800 MHz) processor | Arm Cortex-A75 and Arm Cortex-A55, 64-bit, 12 nm (Octa-Core 2000 MHz) processor |
| 8 GB RAM | 4 GB RAM |
| Adreno 630 GPU | Mali-G52 MC2 GPU |
| 9.63 | 9.09 |
| Storage | |
| 256 GB internal memory | 64 GB internal memory |
| No SD card slot | microSDXC (up to 512 GB) external memory slot |
| 13.3 | 11.74 |
| Camera | |
| 12.20 MP + 24.00 MP | 48.00 MP + 20.00 MP |
| f/1.80 aperture | f/2.00 aperture |
| -- | 26.00mm focal length |
| 0.39 inches (1/2.55") sensor | 0.5 inches (1/2") sensor |
| 3840 x 2160 (60 fps) (4K) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 1920 x 1080 (960 fps) (Full HD) slow motion video | -- |
| 10.34 | 10.89 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA and HSUPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM, Dual SIM |
| 6.3 | 6.7 |
| Battery Life | |
| 3200mAh Li - Polymer Battery | 5000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 5.2 | 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, Compass, Gyroscope, Light Sensor and Proximity Sensor |
Comparison review
The Xiaomi Mi Mix 3 has a global score of 83.8, which is a little bit better than the Samsung Galaxy A31's global score of 81.3. Xiaomi Mi Mix 3 is an older and heavier phone than Samsung Galaxy A31, but Xiaomi was able to make it just a bit thinner anyway. Xiaomi Mi Mix 3 counts with a bit sharper display than Samsung Galaxy A31, although it has a quite lower screen pixel density and a little bit lower 1080 x 2340 pixels resolution, they both have a screen with the same size.
The Xiaomi Mi Mix 3 has a greater memory for applications, games, photos and videos than Samsung Galaxy A31, because although it has no SD extension slot, it also counts with 256 GB internal storage capacity. The Xiaomi Mi Mix 3 features a little bit better processing power than Galaxy A31, and although they both have 8 cores, the Xiaomi Mi Mix 3 also has more RAM memory.
Samsung Galaxy A31 takes just a bit better photos and videos than Xiaomi Mi Mix 3, because although it has a smaller aperture and worse video frame rates, and they both have the same 1920x1080 (Full HD) video quality, the Samsung Galaxy A31 also counts with a back-facing camera with way more mega-pixels and a lot larger back-facing camera sensor shooting much higher quality videos and photographs.
The Samsung Galaxy A31 has a very superior battery lifetime than Xiaomi Mi Mix 3, because it has 5000mAh of battery capacity.
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