Compare phones
| Global Score | |
| 86.5 | 81.4 |
| Basic Information | |
| Samsung | Xiaomi |
| Android 11, 10 | Android 9.0 Pie |
| 2020-03-05 | 2019-04-15 |
| 6.27 x 2.96 x 0.35 inches | 5.81 x 2.78 x 0.29 inches |
| 6.74 ounces | 5.47 ounces |
| Black, Blue and Red | 16 777 216 |
| Plastic and Plastic | -- |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| Display / Screen | |
| 6.4 inches | 6 inches |
| 2340 x 1080 pixels | 2340 x 1080 pixels |
| Super AMOLED | AMOLED |
| 403 pixels per inch | 430 pixels per inch |
| 420 cd/m2 brightness | 600 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.4 | 8.7 |
| Performance | |
| Exynos 9611 chipset | Qualcomm Snapdragon 712 SDM712 chipset |
| Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor | Kryo 360, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 6 GB RAM | 6 GB RAM |
| Mali-G72 MP3 GPU | Adreno 616 GPU |
| 9.36 | 9.36 |
| 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 | 48.00 MP + 20.00 MP |
| f/1.80 aperture | f/1.80 aperture |
| 26.00mm focal length | 26.00mm focal length |
| 0.59 inches (1/1.7") sensor | 0.5 inches (1/2") 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 (960 fps) (HD) slow motion video |
| 12.1 | 11.66 |
| 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 | 3070mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| 7.52 | 5.04 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | 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 M31 is slightly better than Xiaomi Mi 9 SE, with an 86.5 score against 81.4. Although Samsung Galaxy M31 is newer than the Xiaomi Mi 9 SE, it is thicker and heavier. These phones have Android OS (operating system), but the Samsung Galaxy M31 has an older 11 version and Xiaomi Mi 9 SE has Android 9.0 Pie version.
The Xiaomi Mi 9 SE and Samsung Galaxy M31 both feature quite similar CPUs, both have 6 GB of RAM memory and a Octa-Core processor. Xiaomi Mi 9 SE features a little sharper screen than Samsung Galaxy M31, because although it has a quite smaller display, and they both have the same exact resolution of 1080 x 2340px, the Xiaomi Mi 9 SE also counts with a brighter display and a bit greater display density.
The Samsung Galaxy M31 features a better memory to store more apps and games than Xiaomi Mi 9 SE, because although it has just 64 GB internal storage capacity, it also counts with a SD card slot that admits up to 512 GB. The Galaxy M31 shoots a little bit better videos and photos than Xiaomi Mi 9 SE, and although they both have the same 30 fps video frame rates, a same size aperture and the same video definition, the Galaxy M31 also has a way more mega-pixels back facing camera and a larger sensor capturing more light and vivid colors.
The Galaxy M31 features a superior battery lifetime than Xiaomi Mi 9 SE, because it has 6000mAh of battery capacity.
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