Compare phones
| Global Score | |
| 82.3 | 84.1 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 10, 9.0 Pie | Android 11, 10 |
| 2019-03-28 | 2020-03-23 |
| 6.44 x 2.95 x 0.35 inches | 6.26 x 2.96 x 0.35 inches |
| 7.23 ounces | 6.63 ounces |
| Black and Silver | Midnight blue and Raven black |
| -- | Plastic and Plastic |
| -- | Scratch-Resistant Glass |
| Display / Screen | |
| 6.4 inches | 6.4 inches |
| 2340 x 1080 pixels | 2340 x 1080 pixels |
| AMOLED | Super AMOLED |
| 403 pixels per inch | 403 pixels per inch |
| 430 cd/m2 brightness | 420 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.4 | 8.4 |
| Performance | |
| Qualcomm Snapdragon 855 chipset | 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 | 64 GB internal memory |
| No SD card slot | microSDXC (up to 512 GB) external memory slot |
| 10.1 | 11.74 |
| Camera | |
| 48.00 MP + 20.00 MP | 48.00 MP + 20.00 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 | 1920 x 1080 (240 fps) (Full 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 | 6000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.92 | 7.52 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Gyroscope and Proximity Sensor |
| -- | FM Radio |
Comparison review
Galaxy M21 has an overall score of 84.1, which is just a bit better than the Xiaomi Black Shark 2's global score of 82.3. Galaxy M21 is a a little lighter device than the Xiaomi Black Shark 2, but both of them have the same thickness. These devices have Android OS (operating system), but the Galaxy M21 has 11 version and Xiaomi Black Shark 2 has Android 10.
Xiaomi Black Shark 2 and Galaxy M21 both feature very similar screens, and although the Galaxy M21 has a quite opaque screen, they both have a display of the same size, an equal resolution of 1080 x 2340px and the same pixel density. The Xiaomi Black Shark 2 has a bit better processing unit than Samsung Galaxy M21, and although they both have 8 processing cores, the Xiaomi Black Shark 2 also has a higher amount of RAM.
The Samsung Galaxy M21 has a better storage capacity to store more apps and games than Xiaomi Black Shark 2, because although it has 0 less internal memory capacity, it also counts with a SD memory slot that holds a maximum of 512 GB. Galaxy M21's camera is very similar to the camera in Xiaomi Black Shark 2, and although the Galaxy M21 has a tinier diafragm aperture which is not good for low light photos, they both have a camera with a 48 mega-pixels resolution, a 0.5 inches back-facing camera sensor, the same (4K) video resolution and the same 30 frames per second video frame rates.
Galaxy M21 counts with a superior battery lifetime than Xiaomi Black Shark 2, because it has 6000mAh of battery capacity.
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