Compare phones
| Global Score | |
| 85.5 | 85.2 |
| Basic Information | |
| Samsung | Samsung |
| Android 11, 10 | -- |
| 2019-12-27 | 2018-11-15 |
| 6.24 x 2.90 x 0.31 inches | 6.40 x 3.03 x 0.31 inches |
| 6.07 ounces | 6.46 ounces |
| Prism Crush black, Prism Crush blue, Prism Crush pink and Prism Crush white | Bubblegum pink, Caviar black and Lemonade blue |
| Plastic and Plastic | Glass and Metal |
| Scratch-Resistant Glass | -- |
| $ 282.00 | -- |
| Display / Screen | |
| 6.5 inches | 6.3 inches |
| 2400 x 1080 pixels | 2220 x 1080 pixels |
| Super AMOLED | Super AMOLED |
| 405 pixels per inch | 392 pixels per inch |
| No touch screen | No touch screen |
| 8.1 | 8 |
| Performance | |
| Samsung Exynos 9611 chipset | Qualcomm Snapdragon 660 SDM660 chipset |
| ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor | Kryo 260, 64-bit, 14 nm (Octa-Core 2200 MHz) processor |
| 4 GB RAM | 6 GB RAM |
| Mali-G72 MP3 GPU | Adreno 512 GPU |
| 9.27 | 9.27 |
| Storage | |
| 128 GB internal memory | 128 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 14.14 | 14.14 |
| Camera | |
| 48.00 MP + 32.00 MP | 24.00 MP + 24.00 MP |
| f/2.00 aperture | f/1.70 aperture |
| 26.00mm focal length | 27.00mm focal length |
| 0.5 inches (1/2") sensor | 0.36 inches (1/2.8") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 1280 x 720 (240 fps) (HD) slow motion video | -- |
| 11.55 | 10.45 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM, Dual SIM |
| 6.7 | 6.7 |
| Battery Life | |
| 4000mAh Li - Polymer Battery | 3800mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.92 | 5.76 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
Samsung Galaxy A51 has a score of 85.5, which is just a bit better than the Galaxy A9 (2018)'s 85.2 general score. Samsung Galaxy A51's design has the same thickness than the Galaxy A9 (2018), but it is a little lighter. The Galaxy A9 (2018) has a CPU that is just as good as the Samsung Galaxy A51 one, and although the Galaxy A9 (2018) has more RAM, they both have the same number of cores.
Galaxy A51 counts with just a bit better screen than Galaxy A9 (2018), because it has a little bit bigger screen, a little higher 1080 x 2400 resolution and a just a bit greater pixel number per screen inch. Samsung Galaxy A51 has a superior camera than Galaxy A9 (2018), because although it has a smaller aperture which is not so good for low-light photos, and they both have the same video frame rate and the same (4K) video definition, the Samsung Galaxy A51 also counts with a lot larger camera sensor taking more light and vivid colors and a back camera with a way better resolution.
The Samsung Galaxy A9 (2018) has as much storage for apps and games as Galaxy A51, both have equal internal storage capacity and a SD card slot that supports up to 512 GB. The Galaxy A51 counts with just a little bit longer battery lifetime than Galaxy A9 (2018), because it has 4000mAh of battery capacity.
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