Compare phones
| Global Score | |
| 81.3 | 78 |
| Basic Information | |
| Samsung | Xiaomi |
| Android 10 | -- |
| 2020-04-27 | 2018-07-27 |
| 6.27 x 2.88 x 0.34 inches | 6.25 x 2.97 x 0.29 inches |
| 6.53 ounces | 5.93 ounces |
| Prism Crush black, Prism Crush blue, Prism Crush red and Prism Crush white | Black, Blue, Gold, Pink and Red |
| Plastic | Aluminum |
| -- | Scratch-Resistant Glass |
| Display / Screen | |
| 6.4 inches | 6 inches |
| 2400 x 1080 pixels | 2160 x 1080 pixels |
| Super AMOLED | IPS LCD |
| 411 pixels per inch | 402 pixels per inch |
| No touch screen | No touch screen |
| 8.1 | 8.1 |
| Performance | |
| MediaTek Helio P65 MT6768 chipset | Qualcomm Snapdragon 660 SDM660 chipset |
| Arm Cortex-A75 and Arm Cortex-A55, 64-bit, 12 nm (Octa-Core 2000 MHz) processor | Kryo 260, 64-bit, 14 nm (Octa-Core 2200 MHz) processor |
| 4 GB RAM | 6 GB RAM |
| Mali-G52 MC2 GPU | Adreno 512 GPU |
| 9.09 | 9.27 |
| Storage | |
| 64 GB internal memory | 128 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | No SD card slot |
| 11.74 | 10.1 |
| Camera | |
| 48.00 MP + 20.00 MP | 12.00 MP + 20.00 MP |
| f/2.00 aperture | f/1.80 aperture |
| 26.00mm focal length | -- |
| 0.5 inches (1/2") sensor | 0.34 inches (1/2.9") sensor |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| -- | 1280 x 720 (120 fps) (HD) slow motion video |
| 10.89 | 9.79 |
| 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 and HSUPA |
| Nano SIM, Dual SIM | Nano SIM, Dual SIM |
| 6.7 | 6.3 |
| Battery Life | |
| 5000mAh Li - Polymer Battery | 3010mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 6.8 | 4.96 |
| 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 is just a bit better than Xiaomi Mi A2, having an 81.3 score against 78. The Galaxy A31 design is newer, but a bit heavier and somewhat thicker than the Xiaomi Mi A2. Xiaomi Mi A2 features a screen that is very similar to the display in Samsung Galaxy A31, although the Xiaomi Mi A2 has a little bit lower 1080 x 2160 resolution, a bit smaller display and a little bit less pixels per screen inch.
The Xiaomi Mi A2 counts with a little faster CPU than Galaxy A31, and although they both have a Octa-Core processor, the Xiaomi Mi A2 also has a greater amount of RAM. Galaxy A31 features a bigger storage capacity for games and applications than Xiaomi Mi A2, because although it has 0 less internal memory capacity, it also counts with a SD memory slot that supports a maximum of 512 GB.
Samsung Galaxy A31 features a superior camera than Xiaomi Mi A2, because although it has a tinier aperture which is worse for taking photographs and videos in low-light situations, and they both have the same 1920x1080 video quality and the same 30 fps video frame rate, the Samsung Galaxy A31 also counts with a camera in the back with a much better 48 MP resolution and a much bigger back camera sensor which offers a way better photo and video quality.
The Galaxy A31 features a much longer battery life than Xiaomi Mi A2, because it has 5000mAh of battery capacity against 3010mAh.
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