Compare phones
| Global Score | |
| 90.8 | 76.7 |
| Basic Information | |
| Samsung | Samsung |
| Android 11, 10 | Android 10, 8.0 Oreo |
| 2020-04-29 | 2018-06-28 |
| 6.26 x 2.90 x 0.34 inches | 6.27 x 2.98 x 0.32 inches |
| 6.60 ounces | 6.24 ounces |
| Prism cube black | Black, Blue, Gold and Pink |
| Aluminum and Plastic | Plastic |
| Scratch-Resistant Glass | -- |
| $ 339.00 | -- |
| Display / Screen | |
| 6.5 inches | 6 inches |
| 2400 x 1080 pixels | 1480 x 720 pixels |
| Super AMOLED | Super AMOLED |
| 405 pixels per inch | 274 pixels per inch |
| No touch screen | No touch screen |
| 8.1 | 7.2 |
| Performance | |
| Samsung Exynos 980 chipset | Qualcomm Snapdragon 450 SDM450 chipset |
| ARM Cortex-A77 and ARM Cortex-A55, 64-bit, 8 nm (Octa-Core 2200 MHz) processor | ARM Cortex-A53, 64-bit, 14 nm (Octa-Core 1800 MHz) processor |
| 6 GB RAM | 4 GB RAM |
| Mali-G76 MP5 GPU | Adreno 506 GPU |
| 9.27 | 8.91 |
| Storage | |
| 128 GB internal memory | 64 GB internal memory |
| microSDXC (up to 1000 GB) external memory slot | microSDXC (up to 256 GB) external memory slot |
| 15.38 | 10.78 |
| Camera | |
| 48.00 MP + 32.00 MP | 16.00 MP + 16.00 MP |
| f/2.00 aperture | f/1.70 aperture |
| 26.00mm focal length | 26.00mm focal length |
| 0.5 inches (1/2") sensor | 0.36 inches (1/2.8") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 1280 x 720 (480 fps) (HD) slow motion video | -- |
| 11.55 | 9.46 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | LTE-A (4G), LTE (4G), HSPA and HSUPA |
| Nano SIM | Nano SIM, Dual SIM |
| 10.7 | 6.3 |
| Battery Life | |
| 4500mAh Li - Polymer Battery | 3500mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| 6.32 | 5.44 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 4.2 |
| GPS | GPS |
| NFC | -- |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
Galaxy A51 5G is much better than the Galaxy J8, getting a global score of 90.8 against 76.7. These devices work with Android OS (Operating System), but the Galaxy A51 5G has 11 version while Galaxy J8 has Android 10, so it provides the user some nice extra features. Galaxy A51 5G's construction is newer, but a little thicker and just a little heavier than Galaxy J8.
Galaxy A51 5G counts with a bit faster CPU than Samsung Galaxy J8, and although they both have the same number of cores, the Galaxy A51 5G also has a greater amount of RAM. The Galaxy A51 5G counts with a better looking screen than Samsung Galaxy J8, because it has a way higher resolution of 1080 x 2400 pixels, a bit larger screen and more pixels per inch in the display.
The Galaxy A51 5G has much more storage capacity for applications, games, photos and videos than Galaxy J8, because it has 64 GB more internal storage and a slot for external memory cards that admits a maximum of 1000 GB. Galaxy A51 5G captures much better photos and videos than Galaxy J8, because although it has a tinier camera aperture which is not favorable for low-light captures and video, it also counts with a way larger sensor, a much higher video resolution and a much more megapixels back facing camera.
Samsung Galaxy A51 5G features superior battery life than Galaxy J8, because it has 4500mAh of battery capacity against 3500mAh.
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