Compare phones
| Global Score | |
| 75.8 | 85.5 |
| Basic Information | |
| Samsung | Samsung |
| -- | Android 11, 10 |
| 2017-01-13 | 2019-12-27 |
| 6.17 x 3.06 x 0.31 inches | 6.24 x 2.90 x 0.31 inches |
| 6.56 ounces | 6.07 ounces |
| Black sky, Blue mist, Gold sand and Peach cloud | Prism Crush black, Prism Crush blue, Prism Crush pink and Prism Crush white |
| Aluminum and Glass (Corning Gorilla Glass 4) | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| -- | $ 282.00 |
| Display / Screen | |
| 5.7 inches | 6.5 inches |
| 1920 x 1080 pixels (Full HD) | 2400 x 1080 pixels |
| Super AMOLED | Super AMOLED |
| 386 pixels per inch | 405 pixels per inch |
| No touch screen | No touch screen |
| 7.9 | 8.1 |
| Performance | |
| Samsung Exynos 7 Octa 7880 chipset | Samsung Exynos 9611 chipset |
| ARM Cortex-A53, 64-bit, 14 nm (Octa-Core 1900 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 MP3 GPU | Mali-G72 MP3 GPU |
| 9 | 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 | |
| 16.00 MP + 16.00 MP | 48.00 MP + 32.00 MP |
| f/1.90 aperture | f/2.00 aperture |
| -- | 26.00mm focal length |
| -- | 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 |
| 9.24 | 11.55 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G) and HSPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM, Dual SIM |
| 6.1 | 6.7 |
| Battery Life | |
| 3600mAh Li - Ion Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.6 | 5.92 |
| Other Features | |
| Bluetooth 4.2 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
Galaxy A51 has a global score of 85.5, which is much better than the Galaxy A7 (2017)'s 75.8 score. Galaxy A51's design has the same thickness than Galaxy A7 (2017), but it is just a little lighter. Galaxy A51 features a bit better performance than Galaxy A7 (2017), and although they both have 8 cores, the Galaxy A51 also has a higher amount of RAM memory.
Galaxy A51 has a little sharper screen than Galaxy A7 (2017), because it has a quite bigger display, a slightly higher 1080 x 2400 resolution and a little more pixels per screen inch. The Samsung Galaxy A51 counts with a way bigger memory for apps and games than Galaxy A7 (2017), because it has a slot for an SD memory card that allows a maximum of 512 GB and 128 GB internal memory.
Samsung Galaxy A51 features a little better battery duration than Samsung Galaxy A7 (2017), because it has 4000mAh of battery capacity. The Samsung Galaxy A51 features a lot better camera than Galaxy A7 (2017), because although it has a smaller diafragm aperture which is worse for low-light photography and video, it also counts with a lot higher 3840x2160 video quality and a back camera with a lot better 48 megapixels resolution.
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