Compare phones
| Global Score | |
| 81.3 | 79.2 |
| Basic Information | |
| Samsung | Xiaomi |
| Android 10 | Android 11, 10, 9.0 Pie |
| 2020-04-27 | 2019-07-24 |
| 6.27 x 2.88 x 0.34 inches | 6.04 x 2.83 x 0.33 inches |
| 6.53 ounces | 6.13 ounces |
| Prism Crush black, Prism Crush blue, Prism Crush red and Prism Crush white | Blue, Gray and White |
| Plastic | Glass (Corning Gorilla Glass 5) and Plastic |
| -- | Scratch-Resistant Glass |
| Display / Screen | |
| 6.4 inches | 6.1 inches |
| 2400 x 1080 pixels | 1560 x 720 pixels |
| Super AMOLED | Super AMOLED |
| 411 pixels per inch | 282 pixels per inch |
| No touch screen | No touch screen |
| 8.1 | 7.3 |
| Performance | |
| MediaTek Helio P65 MT6768 chipset | Qualcomm Snapdragon 665 chipset |
| Arm Cortex-A75 and Arm Cortex-A55, 64-bit, 12 nm (Octa-Core 2000 MHz) processor | Kryo 260, 64-bit, 11 nm (Octa-Core 2000 MHz) processor |
| 4 GB RAM | 4 GB RAM |
| Mali-G52 MC2 GPU | Adreno 610 GPU |
| 9.09 | 9.09 |
| Storage | |
| 64 GB internal memory | 128 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | microSDXC (up to 256 GB) external memory slot |
| 11.74 | 13.18 |
| Camera | |
| 48.00 MP + 20.00 MP | 48.00 MP + 32.00 MP |
| f/2.00 aperture | f/1.80 aperture |
| 26.00mm focal length | -- |
| 0.5 inches (1/2") sensor | 0.43 inches (1/2.3") sensor |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| -- | 1280 x 720 (240 fps) (HD) slow motion video |
| 10.89 | 11.44 |
| 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 |
| 6.7 | 6.7 |
| Battery Life | |
| 5000mAh Li - Polymer Battery | 4030mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| 6.8 | 5.92 |
| 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
Galaxy A31 has a global score of 81.3, which is just a bit better than the Xiaomi Mi A3's 79.2 overall score. Both of these phones come with Android OS, but Galaxy A31 has the older 10 version and Xiaomi Mi A3 has Android 11. Galaxy A31 is a newer phone than Xiaomi Mi A3, but it's a bit heavier and just a little bit thicker.
Xiaomi Mi A3 has a processor that's very similar to the Samsung Galaxy A31 one, they have a Octa-Core processor and the same RAM memory amount. Samsung Galaxy A31 counts with a brighter screen than Xiaomi Mi A3, because it has more pixels per inch of display, a bit bigger screen and a lot better 1080 x 2400px resolution.
Xiaomi Mi A3 shoots a little bit better pictures and videos than Samsung Galaxy A31, because although it has a tinier sensor which offers a lower image and video quality, and they both have a same resolution camera, the Xiaomi Mi A3 also counts with a much better (4K) video quality and a bigger diafragm aperture to capture better low-light images and videos.
The Xiaomi Mi A3 has more memory capacity for apps and games than Galaxy A31, because although it has a SD extension slot that holds a maximum of 256 GB against 512 GB, it also counts with 128 GB internal storage. Samsung Galaxy A31 counts with superior battery performance than Xiaomi Mi A3, because it has 5000mAh of battery capacity.
Disclaimer: As an Amazon Associate I earn from qualifying purchases.