Compare phones
| Global Score | |
| 86.5 | 83.3 |
| Basic Information | |
| Samsung | Samsung |
| Android 11, 10 | -- |
| 2020-03-05 | 2018-03-16 |
| 6.27 x 2.96 x 0.35 inches | 5.81 x 2.70 x 0.33 inches |
| 6.74 ounces | 5.75 ounces |
| Black, Blue and Red | Burgundy red, Coral blue, Ice blue, Lilac purple, Midnight black, Sunrise gold and Titanium gray |
| Plastic and Plastic | Aluminum and Glass (Corning Gorilla Glass 5) |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| -- | $ 158.00 |
| Display / Screen | |
| 6.4 inches | 5.8 inches |
| 2340 x 1080 pixels | 2960 x 1440 pixels |
| Super AMOLED | Super AMOLED |
| 403 pixels per inch | 568 pixels per inch |
| 420 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 8.4 | 8.9 |
| Performance | |
| Exynos 9611 chipset | Qualcomm Snapdragon 845 SDM845 chipset |
| Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor | Kryo 385, 64-bit, 10 nm (Octa-Core 2800 MHz) processor |
| 6 GB RAM | 4 GB RAM |
| Mali-G72 MP3 GPU | Adreno 630 GPU |
| 9.36 | 9.54 |
| Storage | |
| 64 GB internal memory | 64 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | microSDXC (up to 400 GB) external memory slot |
| 11.74 | 11.34 |
| Camera | |
| 64.00 MP + 32.00 MP | 12.00 MP + 8.00 MP |
| f/1.80 aperture | f/1.50 aperture |
| 26.00mm focal length | -- |
| 0.59 inches (1/1.7") sensor | 0.39 inches (1/2.55") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 3840 x 2160 (60 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 | 10.23 |
| 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 | |
| 6000mAh Li - Polymer Battery | 3000mAh Li - Ion Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 7.52 | 4.96 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
Galaxy M31 is just a bit better than the Galaxy S9, with a general score of 86.5 against 83.3. The Galaxy M31 design is newer than Galaxy S9's, but it is somewhat heavier and just a bit thicker. Galaxy S9 counts with a little faster processing unit than Samsung Galaxy M31, although it has less RAM memory, they both have the same number of cores.
Galaxy S9 has a bit more vivid display than Samsung Galaxy M31, because although it has a quite smaller screen, it also counts with a greater pixels density and a higher 1440 x 2960 resolution. Galaxy M31 features a slightly bigger memory capacity for applications, games, photos and videos than Galaxy S9, and although they both have equal internal storage capacity, the Galaxy M31 also has a slot for external memory cards that admits up to 512 GB.
The Galaxy M31 has a way better battery lifetime than Galaxy S9, because it has a 100% larger battery capacity. The Galaxy M31 counts with a much better camera than Galaxy S9, because although it has worse video frame rates and a tinier diafragm aperture, and they both have the same video quality, the Galaxy M31 also counts with a way bigger sensor taking way better quality videos and photos and a much better 64 MP resolution camera.
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