Compare phones
| Global Score | |
| 75.3 | 85.5 |
| Basic Information | |
| Samsung | Samsung |
| Android 9.0 Pie, 8.0 Oreo, 7.1 Nougat | Android 11, 10 |
| -- | 2019-12-27 |
| 5.97 x 2.95 x 0.31 inches | 6.24 x 2.90 x 0.31 inches |
| 6.00 ounces | 6.07 ounces |
| Black, Gold and Rose gold | Prism Crush black, Prism Crush blue, Prism Crush pink and Prism Crush white |
| Metal | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| -- | $ 282.00 |
| Display / Screen | |
| 5.5 inches | 6.5 inches |
| 1920 x 1080 pixels (Full HD) | 2400 x 1080 pixels |
| IPS LCD | Super AMOLED |
| 401 pixels per inch | 405 pixels per inch |
| No touch screen | No touch screen |
| 7.9 | 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 |
| 3 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 256 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 8.88 | 14.14 |
| Camera | |
| 13.00 MP + 13.00 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 (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, Dual 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 4.1 | Bluetooth 5.0 |
| GPS | GPS |
| -- | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
The Samsung Galaxy A51 has a general score of 85.5, which is better than Samsung Galaxy J7 Prime 2's 75.3 overall score. Samsung Galaxy A51's body has the same thickness than Samsung Galaxy J7 Prime 2, but it's just a little heavier. Both phones in this review come with Android operating system, but the Samsung Galaxy A51 has an older 11 version and Samsung Galaxy J7 Prime 2 has Android 9.0 Pie.
Samsung Galaxy A51 counts with a little more vivid screen than Samsung Galaxy J7 Prime 2, because it has a little bit greater number of pixels per inch in the display, a slightly higher 1080 x 2400 resolution and a bigger screen. Samsung Galaxy A51 features just a little better performance than Galaxy J7 Prime 2, and although they both have the same number of cores, the Samsung Galaxy A51 also has a larger amount of RAM memory.
The Samsung Galaxy A51 has a much better memory for applications, games, photos and videos than Samsung Galaxy J7 Prime 2, because it has a SD memory slot that supports a maximum of 512 GB and 128 GB internal storage. Galaxy A51 takes way better videos and photos than Samsung Galaxy J7 Prime 2, because although it has a smaller diafragm aperture which is not so good for capturing images and/or video in low-light situations, it also counts with a much better (4K) video definition, a lot larger sensor shooting way better quality videos and photos and a camera in the back with a much better resolution.
Galaxy A51 has improved battery duration than Samsung Galaxy J7 Prime 2, because it has a 4000mAh battery size.
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