Compare phones
| Global Score | |
| 76.7 | 86.5 |
| Basic Information | |
| Samsung | Samsung |
| Android 10, 8.0 Oreo | Android 11, 10 |
| 2018-06-28 | 2020-03-05 |
| 6.27 x 2.98 x 0.32 inches | 6.27 x 2.96 x 0.35 inches |
| 6.24 ounces | 6.74 ounces |
| Black, Blue, Gold and Pink | Black, Blue and Red |
| Plastic | Plastic and Plastic |
| -- | Scratch-Resistant Glass |
| Display / Screen | |
| 6 inches | 6.4 inches |
| 1480 x 720 pixels | 2340 x 1080 pixels |
| Super AMOLED | Super AMOLED |
| 274 pixels per inch | 403 pixels per inch |
| -- | 420 cd/m2 brightness |
| No touch screen | No touch screen |
| 7.2 | 8.4 |
| Performance | |
| Qualcomm Snapdragon 450 SDM450 chipset | 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 | 64 GB internal memory |
| microSDXC (up to 256 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 10.78 | 11.74 |
| 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 |
| -- | 1920 x 1080 (240 fps) (Full 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 Li - Polymer 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 M31 has a score of 86.5, which is better than Samsung Galaxy J8's 76.7 general score. Both phones we compare here include Android OS (operating system), but the Galaxy M31 has a newer 11 version and Samsung Galaxy J8 has Android 10. The Galaxy M31 design is newer than Samsung Galaxy J8's, but it's a bit heavier and just a bit thicker.
Galaxy M31 counts with a little faster processor than Samsung Galaxy J8, and although they both have 8 cores, the Galaxy M31 also has a greater amount of RAM. Samsung Galaxy M31 features a much better looking screen than Galaxy J8, because it has a better display density, a way better resolution of 1080 x 2340 pixels and a little bigger screen.
Galaxy M31 counts with a slightly bigger storage for applications, games, photos and videos than Samsung Galaxy J8, and although they both have exactly the same internal storage, the Galaxy M31 also has a SD extension slot that supports a maximum of 512 GB. The Samsung Galaxy M31 has a much better battery performance than Samsung Galaxy J8, because it has 6000mAh of battery capacity against 3500mAh.
Galaxy M31 counts with a much better camera than Galaxy J8, because although it has a smaller camera aperture which is not favorable for shooting photographs or video in low light situations, it also counts with a camera in the back with way more megapixels, a way bigger back camera sensor providing a way higher image quality and a lot better (4K) video definition.
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