Compare phones
| Global Score | |
| 85.5 | 80.4 |
| Basic Information | |
| Samsung | Xiaomi |
| Android 11, 10 | Android 9.0 Pie, 8.1 Oreo |
| 2019-12-27 | 2018-04-20 |
| 6.24 x 2.90 x 0.31 inches | 6.36 x 2.97 x 0.36 inches |
| 6.07 ounces | 6.70 ounces |
| Prism Crush black, Prism Crush blue, Prism Crush pink and Prism Crush white | Black, Blue and Gray |
| Plastic and Plastic | -- |
| Scratch-Resistant Glass | -- |
| $ 282.00 | -- |
| Display / Screen | |
| 6.5 inches | 6 inches |
| 2400 x 1080 pixels | 2160 x 1080 pixels |
| Super AMOLED | IPS LCD |
| 405 pixels per inch | 402 pixels per inch |
| -- | 550 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.1 | 8.5 |
| Performance | |
| Samsung Exynos 9611 chipset | Qualcomm Snapdragon 845 SDM845 chipset |
| ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor | Kryo 385, 64-bit, 10 nm (Octa-Core 2800 MHz) processor |
| 4 GB RAM | 8 GB RAM |
| Mali-G72 MP3 GPU | Adreno 630 GPU |
| 9.27 | 9.63 |
| Storage | |
| 128 GB internal memory | 128 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | No SD card slot |
| 14.14 | 10.1 |
| Camera | |
| 48.00 MP + 32.00 MP | 12.00 MP + 20.00 MP |
| f/2.00 aperture | f/1.80 aperture |
| 26.00mm focal length | -- |
| 0.5 inches (1/2") sensor | 0.34 inches (1/2.9") 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 | 1280 x 720 (120 fps) (HD) slow motion video |
| 11.55 | 9.79 |
| 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 | 4000mAh Li - Ion Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.92 | 5.92 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| 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 | -- |
Comparison review
The Galaxy A51 has a score of 85.5, which is slightly better than the Xiaomi Black Shark's 80.4 global score. The Galaxy A51 is a newer cellphone, and it's also a little bit lighter and somewhat thinner than Xiaomi Black Shark. Both phones in our current comparison have Android operating system, but Galaxy A51 has older 11 version and Xiaomi Black Shark has Android 9.0 Pie version.
The Xiaomi Black Shark features just a bit better processing power than Galaxy A51, and although they both have a Octa-Core CPU, the Xiaomi Black Shark also has a larger amount of RAM. The Xiaomi Black Shark features just a bit better display than Samsung Galaxy A51, although it has a little worse pixels density, a little bit lower resolution of 1080 x 2160 pixels and a little smaller screen.
The Galaxy A51 counts with a lot bigger memory to store more apps and games than Xiaomi Black Shark, and although they both have equal internal storage capacity, the Galaxy A51 also has a SD memory card expansion slot that admits a maximum of 512 GB. Xiaomi Black Shark's battery lifetime is very similar to the Galaxy A51 one.
Galaxy A51 captures much better photos and videos than Xiaomi Black Shark, because although it has a tinier aperture, and they both have the same 3840x2160 (4K) video quality and the same video frame rate, the Galaxy A51 also counts with a way larger back camera sensor and a lot more mega pixels back-facing camera.
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