Compare phones
| Global Score | |
| 72.7 | 90.8 |
| Basic Information | |
| Samsung | Samsung |
| Android 8.0 Oreo | Android 11, 10 |
| 2018-06-29 | 2020-04-29 |
| 6.03 x 3.00 x 0.34 inches | 6.26 x 2.90 x 0.34 inches |
| 6.38 ounces | 6.60 ounces |
| 16 777 216 | Prism cube black |
| -- | Aluminum and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| -- | $ 339.00 |
| 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 7884 chipset | Samsung Exynos 980 chipset |
| ARM Cortex-A53, 64-bit, 14 nm (Octa-Core 1600 MHz) processor | ARM Cortex-A77 and ARM Cortex-A55, 64-bit, 8 nm (Octa-Core 2200 MHz) processor |
| 2 GB RAM | 6 GB RAM |
| Mali-T830 MP1 GPU | Mali-G76 MP5 GPU |
| 8.73 | 9.27 |
| Storage | |
| 32 GB internal memory | 128 GB internal memory |
| microSDXC (up to 400 GB) external memory slot | microSDXC (up to 1000 GB) external memory slot |
| 9.44 | 15.38 |
| Camera | |
| 13.00 MP + 13.00 MP | 48.00 MP + 32.00 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 | 3840 x 2160 (30 fps) (4K) video resolution |
| -- | 1280 x 720 (480 fps) (HD) slow motion video |
| 9.13 | 11.55 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA and HSUPA | 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM | Nano SIM |
| 6.3 | 10.7 |
| Battery Life | |
| 3300mAh Li - Polymer Battery | 4500mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.28 | 6.32 |
| 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
Samsung Galaxy A51 5G is much better than Samsung Galaxy J7 Refine, getting a 90.8 score against 72.7. These devices use Android OS (operating system), but Samsung Galaxy A51 5G has 11 version while Samsung Galaxy J7 Refine has Android 8.0 Oreo. Samsung Galaxy A51 5G is a just a bit heavier cellphone than the Samsung Galaxy J7 Refine, but both of them are equally thin.
Galaxy A51 5G features a little faster processing unit than Samsung Galaxy J7 Refine, and although they both have the same number of cores, the Galaxy A51 5G also has a larger amount of RAM. The Galaxy A51 5G features a better screen than Samsung Galaxy J7 Refine, because it has a way better resolution of 1080 x 2400px, a larger screen and a much better number of pixels per inch in the screen.
The Galaxy A51 5G counts with a very superior storage capacity for games and applications than Samsung Galaxy J7 Refine, because it has 128 GB internal memory capacity and an external SD slot that supports a maximum of 1000 GB. The Galaxy A51 5G has longer battery performance than Galaxy J7 Refine, because it has 4500mAh of battery capacity.
Samsung Galaxy A51 5G takes much clearer photographs and videos than Samsung Galaxy J7 Refine, because although it has a tinier camera aperture which is not good for low-light photography and video, it also counts with a lot bigger sensor capturing way better quality photographs, a back-facing camera with lot more mega-pixels and a much better video definition.
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