Compare phones
| Global Score | |
| 72.5 | 88 |
| Basic Information | |
| Samsung | Samsung |
| -- | Android 11, 10 |
| 2018-07-13 | 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 |
| Black | Mirage black and Mirage blue |
| Plastic | -- |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 230.00 | -- |
| 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 7870 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 (4G), HSPA and HSUPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM | Nano SIM, Dual SIM |
| 6.1 | 6.7 |
| Battery Life | |
| 3300mAh 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
The Galaxy M31s is way better than the Galaxy J7 (2018), getting an 88 score against 72.5. Galaxy M31s's construction is newer than Galaxy J7 (2018)'s, but it is just a little thicker and somewhat heavier. The Galaxy M31s counts with a little better performance than Galaxy J7 (2018), and although they both have the same number of cores, the Galaxy M31s also has 4 GB more RAM memory.
The Galaxy M31s has a much better display than Galaxy J7 (2018), because it has a bigger screen, a way better 1080 x 2400 resolution and way more pixels per inch in the screen. The Galaxy M31s features much more storage to store more games and applications than Galaxy J7 (2018), because it has a SD memory slot that allows up to 512 GB and more internal memory.
Samsung Galaxy M31s features a much better battery lifetime than Samsung Galaxy J7 (2018), because it has a 6000mAh battery size. The Samsung Galaxy M31s captures greater videos and photos than Samsung Galaxy J7 (2018), because although it has a tinier aperture which is not good for taking images and/or video in low-light situations, it also counts with a back-facing camera with way more mega-pixels, a lot higher (4K) video quality and a lot bigger sensor taking much better quality videos and photographs.
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