Compare phones
| Global Score | |
| 82.3 | 85.5 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 10, 9.0 Pie | Android 11, 10 |
| 2019-03-28 | 2019-12-27 |
| 6.44 x 2.95 x 0.35 inches | 6.24 x 2.90 x 0.31 inches |
| 7.23 ounces | 6.07 ounces |
| Black and Silver | Prism Crush black, Prism Crush blue, Prism Crush pink and Prism Crush white |
| -- | Plastic and Plastic |
| -- | Scratch-Resistant Glass |
| -- | $ 282.00 |
| Display / Screen | |
| 6.4 inches | 6.5 inches |
| 2340 x 1080 pixels | 2400 x 1080 pixels |
| AMOLED | Super AMOLED |
| 403 pixels per inch | 405 pixels per inch |
| 430 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 8.4 | 8.1 |
| Performance | |
| Qualcomm Snapdragon 855 chipset | Samsung Exynos 9611 chipset |
| Kryo 485, 64-bit, 7 nm (Octa-Core 2840 MHz) processor | ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 8 GB RAM | 4 GB RAM |
| Adreno 640 GPU | Mali-G72 MP3 GPU |
| 9.63 | 9.27 |
| Storage | |
| 128 GB internal memory | 128 GB internal memory |
| No SD card slot | microSDXC (up to 512 GB) external memory slot |
| 10.1 | 14.14 |
| Camera | |
| 48.00 MP + 20.00 MP | 48.00 MP + 32.00 MP |
| f/1.80 aperture | f/2.00 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 (120 fps) (HD) slow motion video | 1280 x 720 (240 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 - Ion Battery | 4000mAh Li - Polymer 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 2's global score of 82.3. Both of these phones come with Android operating system, but the Galaxy A51 has a more recent 11 version while Xiaomi Black Shark 2 has Android 10 version, so it gives you lots of additional features. Galaxy A51's body is newer, somewhat lighter and thinner than the Xiaomi Black Shark 2.
Xiaomi Black Shark 2 counts with a little more vivid screen than Samsung Galaxy A51, although it has a little bit worse resolution of 1080 x 2340, a quite inferior count of pixels per inch in the screen and a little smaller screen. Xiaomi Black Shark 2 has a bit more powerful processor than Galaxy A51, and although they both have the same number of cores, the Xiaomi Black Shark 2 also has more RAM.
Xiaomi Black Shark 2 and Galaxy A51 count with very similar cameras, and although the Galaxy A51 has a tinier camera aperture which is not favorable for low-light photography, they both have the same video frame rate, a same size sensor, a back facing camera with a 48 mega pixels resolution and the same 3840x2160 video definition.
Samsung Galaxy A51 features a lot bigger storage capacity for games and applications than Xiaomi Black Shark 2, and although they both have the same internal storage capacity, the Samsung Galaxy A51 also has a slot for SD memory cards that allows a maximum of 512 GB. Galaxy A51's battery lifetime is very similar to the battery performance in Xiaomi Black Shark 2.
Disclaimer: As an Amazon Associate I earn from qualifying purchases.