Compare phones
| Global Score | |
| 85.5 | 82.3 |
| Basic Information | |
| Samsung | Xiaomi |
| Android 11, 10 | Android 10, 9.0 Pie |
| 2019-12-27 | 2019-03-28 |
| 6.24 x 2.90 x 0.31 inches | 6.44 x 2.95 x 0.35 inches |
| 6.07 ounces | 7.23 ounces |
| Prism Crush black, Prism Crush blue, Prism Crush pink and Prism Crush white | Black and Silver |
| Plastic and Plastic | -- |
| Scratch-Resistant Glass | -- |
| $ 282.00 | -- |
| Display / Screen | |
| 6.5 inches | 6.4 inches |
| 2400 x 1080 pixels | 2340 x 1080 pixels |
| Super AMOLED | AMOLED |
| 405 pixels per inch | 403 pixels per inch |
| -- | 430 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.1 | 8.4 |
| Performance | |
| Samsung Exynos 9611 chipset | Qualcomm Snapdragon 855 chipset |
| ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor | Kryo 485, 64-bit, 7 nm (Octa-Core 2840 MHz) processor |
| 4 GB RAM | 8 GB RAM |
| Mali-G72 MP3 GPU | Adreno 640 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 | 48.00 MP + 20.00 MP |
| f/2.00 aperture | f/1.80 aperture |
| 26.00mm focal length | -- |
| 0.5 inches (1/2") sensor | 0.5 inches (1/2") 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 | 11.55 |
| 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
Samsung Galaxy A51 is slightly better than the Xiaomi Black Shark 2, having an 85.5 score against 82.3. Both of these phones have Android OS (operating system), but Samsung Galaxy A51 has newer 11 version while Xiaomi Black Shark 2 has Android 10 version. Samsung Galaxy A51 is a newer phone, and it's also lighter and thinner than Xiaomi Black Shark 2.
Xiaomi Black Shark 2 counts with a bit better looking display than Galaxy A51, although it has a little bit smaller screen, a just a bit less pixels per screen inch and a bit lower resolution of 1080 x 2340 pixels. Xiaomi Black Shark 2 counts with a bit more powerful processing unit than Galaxy A51, and although they both have a Octa-Core processor, the Xiaomi Black Shark 2 also has a larger amount of RAM.
The Galaxy A51 counts with a much bigger storage to install games and applications than Xiaomi Black Shark 2, and although they both have equal internal memory, the Galaxy A51 also has an external SD slot that holds up to 512 GB. The Xiaomi Black Shark 2 and Galaxy A51 have really similar batteries performance.
Xiaomi Black Shark 2 and Galaxy A51 have extremely similar cameras, and although the Xiaomi Black Shark 2 has a bigger camera aperture to capture better photos and videos in poorly lited situations, they both have the same 3840x2160 (4K) video resolution, a same resolution back-facing camera, the same 30 frames per second video frame rate and a same size back-facing camera sensor.
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