Compare phones
| Global Score | |
| 86.5 | 78 |
| Basic Information | |
| Samsung | Xiaomi |
| Android 11, 10 | -- |
| 2020-03-05 | 2018-07-27 |
| 6.27 x 2.96 x 0.35 inches | 6.25 x 2.97 x 0.29 inches |
| 6.74 ounces | 5.93 ounces |
| Black, Blue and Red | Black, Blue, Gold, Pink and Red |
| Plastic and Plastic | Aluminum |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| Display / Screen | |
| 6.4 inches | 6 inches |
| 2340 x 1080 pixels | 2160 x 1080 pixels |
| Super AMOLED | IPS LCD |
| 403 pixels per inch | 402 pixels per inch |
| 420 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 8.4 | 8.1 |
| Performance | |
| Exynos 9611 chipset | Qualcomm Snapdragon 660 SDM660 chipset |
| Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor | Kryo 260, 64-bit, 14 nm (Octa-Core 2200 MHz) processor |
| 6 GB RAM | 6 GB RAM |
| Mali-G72 MP3 GPU | Adreno 512 GPU |
| 9.36 | 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 | |
| 64.00 MP + 32.00 MP | 12.00 MP + 20.00 MP |
| f/1.80 aperture | f/1.80 aperture |
| 26.00mm focal length | -- |
| 0.59 inches (1/1.7") sensor | 0.34 inches (1/2.9") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 1920 x 1080 (240 fps) (Full HD) slow motion video | 1280 x 720 (120 fps) (HD) slow motion video |
| 12.1 | 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 | |
| 6000mAh Li - Polymer Battery | 3010mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 7.52 | 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 | FM Radio |
Comparison review
The Samsung Galaxy M31 is much better than the Xiaomi Mi A2, getting a overall score of 86.5 against 78. The Samsung Galaxy M31 is a newer phone than the Xiaomi Mi A2, but it's somewhat heavier and somewhat thicker. The Galaxy M31 has a little more vivid screen than Xiaomi Mi A2, because it has a quite bigger screen, a little bit better pixel quantity per inch in the screen and a slightly better resolution of 1080 x 2340.
Galaxy M31 features more memory to install games and applications than Xiaomi Mi A2, because although it has only 64 GB internal memory, it also counts with a SD memory slot that admits a maximum of 512 GB. Galaxy M31 has a little faster processor than Xiaomi Mi A2. Both of them have 8 cores and 6 GB of RAM memory.
The Samsung Galaxy M31 has a very superior battery performance than Xiaomi Mi A2, because it has 6000mAh of battery capacity. The Galaxy M31 captures much better photographs and videos than Xiaomi Mi A2, and although they both have the same video frame rate, a F1.8 diafragm aperture and the same (4K) video definition, the Galaxy M31 also has a back-facing camera with much more MP and a lot bigger back-facing camera sensor which gives a lot higher photo and video quality.
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