Compare phones
| Global Score | |
| 76.7 | 88 |
| Basic Information | |
| Samsung | Samsung |
| Android 10, 8.0 Oreo | Android 11, 10 |
| 2018-06-28 | 2020-08-06 |
| 6.27 x 2.98 x 0.32 inches | 6.27 x 2.93 x 0.37 inches |
| 6.24 ounces | 7.16 ounces |
| Black, Blue, Gold and Pink | Mirage black and Mirage blue |
| Plastic | -- |
| -- | Scratch-Resistant Glass |
| Display / Screen | |
| 6 inches | 6.5 inches |
| 1480 x 720 pixels | 2400 x 1080 pixels |
| Super AMOLED | Super AMOLED |
| 274 pixels per inch | 405 pixels per inch |
| No touch screen | No touch screen |
| 7.2 | 8.1 |
| Performance | |
| Qualcomm Snapdragon 450 SDM450 chipset | Samsung Exynos 9611 chipset |
| ARM Cortex-A53, 64-bit, 14 nm (Octa-Core 1800 MHz) processor | Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 4 GB RAM | 6 GB RAM |
| Adreno 506 GPU | Mali-G72 MP3 GPU |
| 8.91 | 9.36 |
| Storage | |
| 64 GB internal memory | 128 GB internal memory |
| microSDXC (up to 256 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 10.78 | 14.14 |
| Camera | |
| 16.00 MP + 16.00 MP | 64.00 MP + 32.00 MP |
| f/1.70 aperture | f/1.80 aperture |
| 26.00mm focal length | 26.00mm focal length |
| 0.36 inches (1/2.8") sensor | 0.59 inches (1/1.7") sensor |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| -- | 1280 x 720 (480 fps) (HD) slow motion video |
| 9.46 | 12.1 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA and HSUPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM, Dual SIM |
| 6.3 | 6.7 |
| Battery Life | |
| 3500mAh Battery | 6000mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.44 | 7.52 |
| Other Features | |
| Bluetooth 4.2 | Bluetooth 5.0 |
| GPS | GPS |
| -- | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
Galaxy M31s has a score of 88, which is better than the Galaxy J8's 76.7 general score. Galaxy M31s's body is notably newer than the Galaxy J8's, although it's thicker and somewhat heavier. Both of these devices use Android OS (operating system), but Galaxy M31s has 11 version and Galaxy J8 has Android 10 version.
The Samsung Galaxy M31s has a sharper screen than Galaxy J8, because it has a quite bigger screen, a higher screen density and a much better 1080 x 2400 resolution. Galaxy M31s features a way bigger memory to install applications and games than Galaxy J8, because it has a SD memory card expansion slot that holds up to 512 GB and more internal memory.
The Galaxy M31s counts with just a little better performance than Galaxy J8, and although they both have the same number of cores, the Galaxy M31s also has more RAM memory. The Galaxy M31s has a much better camera than Samsung Galaxy J8, because although it has a smaller aperture which is not favorable for capturing images or video in poorly lited situations, it also counts with a way more mega-pixels back-facing camera, a way larger sensor taking much better quality pictures and videos and a much higher 3840x2160 video resolution.
The Samsung Galaxy M31s features a much better battery lifetime than Galaxy J8, because it has a 71 percent bigger battery size.
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