Compare phones
| Global Score | |
| 75.3 | 86.5 |
| Basic Information | |
| Samsung | Samsung |
| Android 9.0 Pie, 8.0 Oreo, 7.1 Nougat | Android 11, 10 |
| -- | 2020-03-05 |
| 5.97 x 2.95 x 0.31 inches | 6.27 x 2.96 x 0.35 inches |
| 6.00 ounces | 6.74 ounces |
| Black, Gold and Rose gold | Black, Blue and Red |
| Metal | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| Display / Screen | |
| 5.5 inches | 6.4 inches |
| 1920 x 1080 pixels (Full HD) | 2340 x 1080 pixels |
| IPS LCD | Super AMOLED |
| 401 pixels per inch | 403 pixels per inch |
| -- | 420 cd/m2 brightness |
| No touch screen | No touch screen |
| 7.9 | 8.4 |
| Performance | |
| Samsung Exynos 7 Octa 7870 chipset | 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 |
| 3 GB RAM | 6 GB RAM |
| Mali-T830 MP1 GPU | Mali-G72 MP3 GPU |
| 8.73 | 9.36 |
| Storage | |
| 32 GB internal memory | 64 GB internal memory |
| microSDXC (up to 256 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 8.88 | 11.74 |
| Camera | |
| 13.00 MP + 13.00 MP | 64.00 MP + 32.00 MP |
| f/1.90 aperture | f/1.80 aperture |
| 27.00mm 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 |
| -- | 1920 x 1080 (240 fps) (Full 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, Dual SIM | Nano SIM, Dual SIM |
| 6.1 | 6.7 |
| Battery Life | |
| 3300mAh Battery | 6000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.28 | 7.52 |
| Other Features | |
| Bluetooth 4.1 | 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
Samsung Galaxy M31 is much better than Galaxy J7 Prime 2, getting an 86.5 score against 75.3. Even being the best in our current comparison, Samsung Galaxy M31 is a somewhat heavier and somewhat thicker phone than the Galaxy J7 Prime 2. These phones work with Android OS, but the Samsung Galaxy M31 has the previous 11 version and Galaxy J7 Prime 2 has Android 9.0 Pie version.
The Samsung Galaxy M31 counts with a bit more vivid screen than Galaxy J7 Prime 2, because it has a bigger display, a little better pixel density and a little bit higher resolution of 1080 x 2340px. Samsung Galaxy M31 counts with a much greater storage to store more apps and games than Galaxy J7 Prime 2, because it has 32 GB more internal memory capacity and an external SD slot that admits up to 512 GB.
The Galaxy M31 counts with a bit more powerful processing unit than Samsung Galaxy J7 Prime 2, and although they both have a Octa-Core processing unit, the Galaxy M31 also has more RAM. The Samsung Galaxy M31 captures way better pictures and videos than Samsung Galaxy J7 Prime 2, because it has a larger aperture to capture better low light images and videos, a much higher video quality, a much better resolution back camera and a much larger back-facing camera sensor shooting lot higher quality videos and photographs.
Galaxy M31 counts with a much longer battery lifetime than Samsung Galaxy J7 Prime 2, because it has an 82% bigger battery capacity.
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