Compare phones
| Global Score | |
| 79.2 | 81.3 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 11, 10, 9.0 Pie | Android 10 |
| 2019-07-24 | 2020-04-27 |
| 6.04 x 2.83 x 0.33 inches | 6.27 x 2.88 x 0.34 inches |
| 6.13 ounces | 6.53 ounces |
| Blue, Gray and White | Prism Crush black, Prism Crush blue, Prism Crush red and Prism Crush white |
| Glass (Corning Gorilla Glass 5) and Plastic | Plastic |
| Scratch-Resistant Glass | -- |
| Display / Screen | |
| 6.1 inches | 6.4 inches |
| 1560 x 720 pixels | 2400 x 1080 pixels |
| Super AMOLED | Super AMOLED |
| 282 pixels per inch | 411 pixels per inch |
| No touch screen | No touch screen |
| 7.3 | 8.1 |
| Performance | |
| Qualcomm Snapdragon 665 chipset | MediaTek Helio P65 MT6768 chipset |
| Kryo 260, 64-bit, 11 nm (Octa-Core 2000 MHz) processor | Arm Cortex-A75 and Arm Cortex-A55, 64-bit, 12 nm (Octa-Core 2000 MHz) processor |
| 4 GB RAM | 4 GB RAM |
| Adreno 610 GPU | Mali-G52 MC2 GPU |
| 9.09 | 9.09 |
| Storage | |
| 128 GB internal memory | 64 GB internal memory |
| microSDXC (up to 256 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 13.18 | 11.74 |
| Camera | |
| 48.00 MP + 32.00 MP | 48.00 MP + 20.00 MP |
| f/1.80 aperture | f/2.00 aperture |
| -- | 26.00mm focal length |
| 0.43 inches (1/2.3") sensor | 0.5 inches (1/2") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 1280 x 720 (240 fps) (HD) slow motion video | -- |
| 11.44 | 10.89 |
| 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 | Nano SIM, Dual SIM |
| 6.7 | 6.7 |
| Battery Life | |
| 4030mAh Battery | 5000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.92 | 6.8 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| 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
Samsung Galaxy A31 is slightly better than Xiaomi Mi A3, getting a global score of 81.3 against 79.2. Although Samsung Galaxy A31 is newer than the Xiaomi Mi A3, it is just a little heavier and just a little thicker. Both of these phones include Android OS, but Samsung Galaxy A31 has the older 10 version while Xiaomi Mi A3 has Android 11.
Samsung Galaxy A31 has a brighter screen than Xiaomi Mi A3, because it has more pixels per inch of display, a lot higher resolution of 1080 x 2400 pixels and a little bit larger display. The Samsung Galaxy A31's processor is very similar to Xiaomi Mi A3's processor, both have 8 processing cores and 4 GB of RAM.
The Xiaomi Mi A3 counts with a better memory for applications and games than Samsung Galaxy A31, because although it has a SD card slot that admits a maximum of 256 GB against 512 GB, it also counts with more internal storage capacity. Xiaomi Mi A3 takes a bit better photographs and videos than Samsung Galaxy A31, because although it has a tinier back camera sensor taking less light and duller colors, and they both have a camera in the back with a 48 mega-pixels resolution, the Xiaomi Mi A3 also counts with a way higher 3840x2160 (4K) video resolution and a larger aperture for better photography in poorly lited environments.
Galaxy A31 features greater battery duration than Xiaomi Mi A3, because it has a 24% bigger battery capacity.
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