Compare phones
| Global Score | |
| 72.7 | 81.3 |
| Basic Information | |
| Samsung | Samsung |
| Android 8.0 Oreo | Android 10 |
| 2018-06-29 | 2020-04-27 |
| 6.03 x 3.00 x 0.34 inches | 6.27 x 2.88 x 0.34 inches |
| 6.38 ounces | 6.53 ounces |
| 16 777 216 | Prism Crush black, Prism Crush blue, Prism Crush red and Prism Crush white |
| -- | Plastic |
| Scratch-Resistant Glass | -- |
| Display / Screen | |
| 5.5 inches | 6.4 inches |
| 1280 x 720 pixels (HD) | 2400 x 1080 pixels |
| TFT | Super AMOLED |
| 267 pixels per inch | 411 pixels per inch |
| No touch screen | No touch screen |
| 7.1 | 8.1 |
| Performance | |
| Samsung Exynos 7 Octa 7884 chipset | MediaTek Helio P65 MT6768 chipset |
| ARM Cortex-A53, 64-bit, 14 nm (Octa-Core 1600 MHz) processor | Arm Cortex-A75 and Arm Cortex-A55, 64-bit, 12 nm (Octa-Core 2000 MHz) processor |
| 2 GB RAM | 4 GB RAM |
| Mali-T830 MP1 GPU | Mali-G52 MC2 GPU |
| 8.73 | 9.09 |
| Storage | |
| 32 GB internal memory | 64 GB internal memory |
| microSDXC (up to 400 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 9.44 | 11.74 |
| Camera | |
| 13.00 MP + 13.00 MP | 48.00 MP + 20.00 MP |
| f/1.70 aperture | f/2.00 aperture |
| 28.00mm focal length | 26.00mm focal length |
| 0.33 inches (1/3.06") sensor | 0.5 inches (1/2") sensor |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 9.13 | 10.89 |
| 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 | 5000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.28 | 6.8 |
| 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 |
Comparison review
The Galaxy A31 is better than Galaxy J7 Refine, with a general score of 81.3 against 72.7. These devices have Android OS (Operating System), but Galaxy A31 has an older 10 version and Galaxy J7 Refine has Android 8.0 Oreo. Galaxy A31's body has the same thickness than Galaxy J7 Refine, but it is a little heavier.
Galaxy A31 features a bit better processor than Samsung Galaxy J7 Refine, and although they both have a Octa-Core processing unit, the Galaxy A31 also has more RAM memory. The Samsung Galaxy A31 features a brighter screen than Galaxy J7 Refine, because it has a lot better 1080 x 2400 resolution, a lot greater pixels amount per inch of display and a larger display.
The Galaxy A31 has a much greater memory capacity to install games and applications than Galaxy J7 Refine, because it has an external memory card slot that admits a maximum of 512 GB and more internal memory. Samsung Galaxy A31 has a way better battery lifetime than Samsung Galaxy J7 Refine, because it has 5000mAh of battery capacity.
The Samsung Galaxy A31 features a superior camera than Samsung Galaxy J7 Refine, because although it has a tinier aperture which is worse for low-light photos and videos, and they both have the same 30 fps video frame rate and the same (Full HD) video resolution, the Samsung Galaxy A31 also counts with a lot better 48 MP resolution back-facing camera and a way larger back camera sensor.
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