Compare phones
| Global Score | |
| 74.6 | 90.8 |
| Basic Information | |
| Samsung | Samsung |
| Android 8.0 Oreo | Android 11, 10 |
| -- | 2020-04-29 |
| 6.04 x 3.04 x 0.32 inches | 6.26 x 2.90 x 0.34 inches |
| 6.14 ounces | 6.60 ounces |
| 16 777 216 | Prism cube black |
| Plastic | 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 |
| Super AMOLED | 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 |
| 4 GB RAM | 6 GB RAM |
| ARM Mali-G71 GPU | Mali-G76 MP5 GPU |
| 8.82 | 9.27 |
| Storage | |
| 32 GB internal memory | 128 GB internal memory |
| microSDXC (up to 256 GB) external memory slot | microSDXC (up to 1000 GB) external memory slot |
| 8.88 | 15.38 |
| Camera | |
| 13.00 MP + 8.00 MP | 48.00 MP + 32.00 MP |
| f/1.90 aperture | f/2.00 aperture |
| 27.00mm 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 |
| 9.02 | 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 |
| Micro SIM, Dual SIM | Nano SIM |
| 6.1 | 10.7 |
| Battery Life | |
| 3000mAh Battery | 4500mAh Li - Polymer Battery |
| Removable Battery | Non-Removable Battery |
| 4.96 | 6.32 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| -- | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
The Samsung Galaxy A51 5G has a global score of 90.8, which is a lot better than the Galaxy J7 Duo's 74.6 global score. Even being the best in this comparison, Samsung Galaxy A51 5G's body is just a little thicker and a little bit heavier than Galaxy J7 Duo. Both devices in this review include Android operating system, but the Samsung Galaxy A51 5G has 11 version and Galaxy J7 Duo has Android 8.0 Oreo.
The Samsung Galaxy A51 5G has a bit better processing unit than Galaxy J7 Duo, and although they both have a Octa-Core processor, the Samsung Galaxy A51 5G also has 2 GB more RAM. The Galaxy A51 5G has a brighter display than Galaxy J7 Duo, because it has a much higher 1080 x 2400px resolution, a way greater screen pixels density and a bigger screen.
Galaxy A51 5G has a way bigger storage capacity to install applications and games or saving photos and videos than Samsung Galaxy J7 Duo, because it has a SD card slot that holds a maximum of 1000 GB and 128 GB internal memory capacity. Galaxy A51 5G counts with a lot better camera than Samsung Galaxy J7 Duo, because although it has a tinier camera aperture which is not good for taking photographs or videos in low light environments, it also counts with a back facing camera with much more mega-pixels, a lot higher 3840x2160 (4K) video definition and a way larger back-facing camera sensor which gives a way better image and video quality.
The Galaxy A51 5G features a really longer battery life than Samsung Galaxy J7 Duo, because it has a 4500mAh battery size against 3000mAh.
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