Compare phones
| Global Score | |
| 85.5 | 88.3 |
| Basic Information | |
| Samsung | Xiaomi |
| Android 11, 10 | Android 11 |
| 2019-12-27 | 2021-05-06 |
| 6.24 x 2.90 x 0.31 inches | 6.45 x 3.01 x 0.41 inches |
| 6.07 ounces | 7.41 ounces |
| Prism Crush black, Prism Crush blue, Prism Crush pink and Prism Crush white | Mirror Black and Pale Grey |
| Plastic and Plastic | Metal and Plastic |
| Scratch-Resistant Glass | -- |
| $ 282.00 | $ 499.00 |
| Display / Screen | |
| 6.5 inches | 6.7 inches |
| 2400 x 1080 pixels | 2400 x 1080 pixels |
| Super AMOLED | -- |
| 405 pixels per inch | 393 pixels per inch |
| -- | 1300 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.1 | 9.1 |
| Performance | |
| Samsung Exynos 9611 chipset | Qualcomm Snapdragon 870 SM8250-AC chipset |
| ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor | Kryo 585, 64-bit, 7 nm (Octa-Core 3200 MHz) processor |
| 4 GB RAM | 8 GB RAM |
| Mali-G72 MP3 GPU | Adreno 650 GPU |
| 9.27 | 9.81 |
| 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 (60 fps) (4K) video resolution |
| 1280 x 720 (240 fps) (HD) slow motion video | 1280 x 720 (960 fps) (HD) slow motion video |
| 11.55 | 11.99 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G) and HSDPA |
| Nano SIM, Dual SIM | Dual SIM |
| 6.7 | 10.6 |
| Battery Life | |
| 4000mAh Li - Polymer Battery | 4500mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.92 | 6.32 |
| 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 | -- |
Comparison review
The Xiaomi Black Shark 4 has a global score of 88.3, which is slightly better than Galaxy A51's 85.5 overall score. Xiaomi Black Shark 4's body is newer than Galaxy A51's, but it's much thicker and heavier. These phones work with the same Android 11 operating system, so you shouldn't perceive any difference in that aspect.
Xiaomi Black Shark 4 counts with a bit faster CPU than Galaxy A51, and although they both have a Octa-Core processor, the Xiaomi Black Shark 4 also has a greater amount of RAM memory. The Xiaomi Black Shark 4 counts with a much better display than Galaxy A51, because although it has a just a little worse display density, and they both have an equal 1080 x 2400 pixels resolution, the Xiaomi Black Shark 4 also counts with a quite larger screen.
The Xiaomi Black Shark 4 has a bit better camera than Galaxy A51, and although they both have the same camera sensor size, the same video quality and a same resolution back-facing camera, the Xiaomi Black Shark 4 also has faster video frame rate and a bigger camera aperture to capture better photography and video in low-light situations.
Galaxy A51 features a much better storage for games and applications than Xiaomi Black Shark 4, and although they both have equal 128 GB internal storage, the Galaxy A51 also has an external SD slot that supports up to 512 GB. The Xiaomi Black Shark 4 features a bit longer battery performance than Samsung Galaxy A51, because it has a 4500mAh battery capacity.
Although Xiaomi Black Shark 4 is a better device, it is way more expensive than the Galaxy A51, and it doesn't have such a good relation between it's price and quality as the Galaxy A51. So if you need that extra specs and features, you can buy the Xiaomi Black Shark 4, else you can save some dollars and buy the Galaxy A51, resigning some specs and features.
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