Compare phones
| Global Score | |
| 72.7 | 88 |
| Basic Information | |
| Samsung | Samsung |
| Android 8.0 Oreo | Android 11, 10 |
| 2018-06-29 | 2020-08-06 |
| 6.03 x 3.00 x 0.34 inches | 6.27 x 2.93 x 0.37 inches |
| 6.38 ounces | 7.16 ounces |
| 16 777 216 | Mirage black and Mirage blue |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| Display / Screen | |
| 5.5 inches | 6.5 inches |
| 1280 x 720 pixels (HD) | 2400 x 1080 pixels |
| TFT | Super AMOLED |
| 267 pixels per inch | 405 pixels per inch |
| No touch screen | No touch screen |
| 7.1 | 8.1 |
| Performance | |
| Samsung Exynos 7 Octa 7884 chipset | Samsung Exynos 9611 chipset |
| ARM Cortex-A53, 64-bit, 14 nm (Octa-Core 1600 MHz) processor | Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 2 GB RAM | 6 GB RAM |
| Mali-T830 MP1 GPU | Mali-G72 MP3 GPU |
| 8.73 | 9.36 |
| Storage | |
| 32 GB internal memory | 128 GB internal memory |
| microSDXC (up to 400 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 9.44 | 14.14 |
| Camera | |
| 13.00 MP + 13.00 MP | 64.00 MP + 32.00 MP |
| f/1.70 aperture | f/1.80 aperture |
| 28.00mm focal length | 26.00mm focal length |
| 0.33 inches (1/3.06") 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 |
| 9.13 | 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 | Nano SIM, Dual SIM |
| 6.3 | 6.7 |
| Battery Life | |
| 3300mAh Li - Polymer Battery | 6000mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.28 | 7.52 |
| Other Features | |
| Bluetooth 4.2 | Bluetooth 5.0 |
| GPS | GPS |
| -- | NFC |
| -- | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| -- | FM Radio |
Comparison review
Galaxy M31s is way better than the Galaxy J7 Refine, with a score of 88 against 72.7. Both of these devices have Android OS (Operating System), but Galaxy M31s has an older 11 version and Galaxy J7 Refine has Android 8.0 Oreo. Even though the Galaxy M31s is noticeably newer than Galaxy J7 Refine, it is a little bit thicker and heavier.
Samsung Galaxy M31s counts with a more vivid screen than Samsung Galaxy J7 Refine, because it has a way higher 1080 x 2400 resolution, a bigger display and a lot more pixels per inch in the screen. The Samsung Galaxy M31s counts with a way bigger storage for applications, games, photos and videos than Galaxy J7 Refine, because it has 96 GB more internal memory and a slot for external memory cards that supports a maximum of 512 GB.
The Galaxy M31s has a little better processing power than Galaxy J7 Refine, and although they both have a Octa-Core processor, the Galaxy M31s also has more RAM. Galaxy M31s counts with a really longer battery performance than Galaxy J7 Refine, because it has 6000mAh of battery capacity against 3300mAh.
The Galaxy M31s shoots a lot better photographs and videos than Galaxy J7 Refine, because although it has a smaller aperture which is not good for low-light captures and videos, it also counts with a lot more MP back facing camera, a much better 3840x2160 (4K) video quality and a lot bigger back-facing camera sensor providing a way better image quality.
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