Compare phones
| Global Score | |
| 72.5 | 90.8 |
| Basic Information | |
| Samsung | Samsung |
| -- | Android 11, 10 |
| 2018-07-13 | 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 |
| Black | Prism cube black |
| Plastic | Aluminum and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 230.00 | $ 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 7870 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 (4G), HSPA and HSUPA | 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM | Nano SIM |
| 6.1 | 10.7 |
| Battery Life | |
| 3300mAh 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
Galaxy A51 5G is much better than the Samsung Galaxy J7 (2018), having a 90.8 score against 72.5. Galaxy A51 5G's construction has the same thickness than the Samsung Galaxy J7 (2018), but it is just a bit heavier. Samsung Galaxy A51 5G has a sharper screen than Galaxy J7 (2018), because it has a larger display, a lot better resolution of 1080 x 2400 pixels and a much greater pixels density.
Galaxy A51 5G features a little faster CPU than Galaxy J7 (2018), and although they both have the same number of cores, the Galaxy A51 5G also has 4 GB more RAM. Galaxy A51 5G has a very superior memory capacity to install games and applications than Galaxy J7 (2018), because it has a slot for external memory cards that allows up to 1000 GB and 128 GB internal storage.
The Samsung Galaxy A51 5G features longer battery duration than Galaxy J7 (2018), because it has a 4500mAh battery size instead of 3300mAh. The Samsung Galaxy A51 5G features a very superior camera than Galaxy J7 (2018), because although it has a smaller aperture which is not favorable for low light photography, it also counts with a camera with lot more megapixels, a lot bigger sensor which provides a much better photo and video quality and a much higher (4K) video quality.
Galaxy A51 5G costs a lot more than the Galaxy J7 (2018), but you can get a much better phone for that extra money.
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