Compare phones
| Global Score | |
| 72.5 | 85.5 |
| Basic Information | |
| Samsung | Samsung |
| -- | Android 11, 10 |
| 2018-07-13 | 2019-12-27 |
| 6.03 x 3.00 x 0.34 inches | 6.24 x 2.90 x 0.31 inches |
| 6.38 ounces | 6.07 ounces |
| Black | Prism Crush black, Prism Crush blue, Prism Crush pink and Prism Crush white |
| Plastic | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 230.00 | $ 282.00 |
| 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 9611 chipset |
| ARM Cortex-A53, 64-bit, 14 nm (Octa-Core 1600 MHz) processor | ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 2 GB RAM | 4 GB RAM |
| Mali-T830 MP1 GPU | Mali-G72 MP3 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 512 GB) external memory slot |
| 9.44 | 14.14 |
| 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 (240 fps) (HD) slow motion video |
| 9.13 | 11.55 |
| 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 | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.28 | 5.92 |
| 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 is better than Galaxy J7 (2018), having an 85.5 score against 72.5. Samsung Galaxy A51's construction is newer, a little bit lighter and just a little thinner than Galaxy J7 (2018). The Galaxy A51 counts with a little faster processor than Galaxy J7 (2018), and although they both have 8 cpu cores, the Galaxy A51 also has 2 GB more RAM memory.
Samsung Galaxy A51 counts with a sharper display than Galaxy J7 (2018), because it has a way higher resolution of 1080 x 2400 pixels, a lot higher pixels density and a larger display. Galaxy A51 features a way better camera than Samsung Galaxy J7 (2018), because although it has a tinier diafragm aperture which is not nice for shooting photos and video in low-light environments, it also counts with a lot higher resolution back facing camera, a much bigger back-facing camera sensor shooting much higher quality photographs and a lot higher video quality.
The Samsung Galaxy A51 has a superior storage capacity for games and applications than Galaxy J7 (2018), because it has 128 GB internal memory capacity and a SD card slot that allows up to 512 GB. The Galaxy A51 has better battery duration than Galaxy J7 (2018), because it has 4000mAh of battery capacity.
Samsung Galaxy A51 costs more money than the Samsung Galaxy J7 (2018), but it's still a great deal, because you can get a much better phone for that extra money.
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