Compare phones
| Global Score | |
| 72.5 | 81.3 |
| Basic Information | |
| Samsung | Samsung |
| -- | Android 10 |
| 2018-07-13 | 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 |
| Black | Prism Crush black, Prism Crush blue, Prism Crush red and Prism Crush white |
| Plastic | Plastic |
| Scratch-Resistant Glass | -- |
| $ 230.00 | -- |
| 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 7870 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 (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 | 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
Galaxy A31 is much better than Samsung Galaxy J7 (2018), with a global score of 81.3 against 72.5. Galaxy A31 is a just a little bit heavier cellphone than Samsung Galaxy J7 (2018), but both are 0.34inches thick. The Galaxy A31 features a more vivid display than Samsung Galaxy J7 (2018), because it has a way higher 1080 x 2400 resolution, a larger screen and a much better pixels density.
Galaxy A31 features a superior memory to install games and applications than Galaxy J7 (2018), because it has a slot for external memory cards that allows up to 512 GB and 32 GB more internal storage. The Galaxy A31 features a bit more powerful processing unit than Galaxy J7 (2018), and although they both have 8 CPU cores, the Galaxy A31 also has a higher amount of RAM.
The Samsung Galaxy A31 has a much better battery lifetime than Galaxy J7 (2018), because it has 5000mAh of battery capacity. The Samsung Galaxy A31 features a much better camera than Galaxy J7 (2018), because although it has a smaller diafragm aperture, and they both have the same video resolution and the same video frame rates, the Samsung Galaxy A31 also counts with a much larger back camera sensor which gives a way better image and video quality and a way more mega-pixels back facing camera.
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