Compare phones
| Global Score | |
| 88.9 | 91.8 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 10 | Android 11 |
| 2019-09-24 | 2021-01-29 |
| 6.08 x 2.85 x 0.41 inches | 5.97 x 2.80 x 0.31 inches |
| 8.50 ounces | 6.03 ounces |
| Black | Gray, Phantom pink, Violet and White |
| Titanium | Aluminum and Plastic |
| -- | Scratch-Resistant Glass |
| -- | $ 722.00 |
| Display / Screen | |
| 7.9 inches | 6.2 inches |
| 2250 x 2088 pixels | 2400 x 1080 pixels |
| OLED | Dynamic AMOLED |
| 389 pixels per inch | 424 pixels per inch |
| -- | 1300 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.2 | 9.2 |
| Performance | |
| Qualcomm Snapdragon 855+ SM8150-AC chipset | Qualcomm Snapdragon 888 chipset |
| Kryo 485, 64-bit, 7 nm (Octa-Core 2960 MHz) processor | Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor |
| 12 GB RAM | 8 GB RAM |
| Adreno 640 GPU | Adreno 660 GPU |
| 9.81 | 9.63 |
| Storage | |
| 512 GB internal memory | 128 GB internal memory |
| No SD card slot | No SD card slot |
| 17.6 | 10.1 |
| Camera | |
| 108.00 MP | 12.00 MP + 10.00 MP |
| f/1.70 aperture | f/1.80 aperture |
| -- | 26.00mm focal length |
| 0.75 inches (1/1.33") sensor | 0.57 inches (1/1.76") sensor |
| 3840 x 2160 (4K) video resolution | 7680 x 4320 (24 fps) video resolution |
| -- | 1280 x 720 (960 fps) (HD) slow motion video |
| 10.56 | 10.78 |
| 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), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM |
| 6.7 | 10.7 |
| Battery Life | |
| 4050mAh Li - Ion Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 6 | 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, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| -- | FM Radio |
Comparison review
The Galaxy S21 has an overall score of 91.8, which is a little bit better than Xiaomi Mi Mix Alpha's 88.9 global score. Both devices we are comparing use Android operating system, but Galaxy S21 has a newer 11 version while Xiaomi Mi Mix Alpha has Android 10, so it gives you a couple additional features. Galaxy S21's design is newer, lighter and a lot thinner than the Xiaomi Mi Mix Alpha.
The Xiaomi Mi Mix Alpha features a bit superior processing unit than Galaxy S21, and although they both have a Octa-Core CPU, the Xiaomi Mi Mix Alpha also has 4 GB more RAM memory. The Galaxy S21 counts with a more vivid display than Xiaomi Mi Mix Alpha, because although it has a lot lower resolution of 1080 x 2400 and a much smaller display, it also counts with a bit more pixels per inch in the screen.
The Xiaomi Mi Mix Alpha has a very superior memory to install applications and games or saving photos and videos than Galaxy S21, because it has 512 GB internal storage capacity. The Galaxy S21 shoots slightly better videos and photos than Xiaomi Mi Mix Alpha, because although it has a lot tinier camera sensor which provides a much worse photo and video quality, a camera in the back with lot less megapixels resolution and a smaller camera aperture, it also counts with a way better video resolution.
Xiaomi Mi Mix Alpha has just a bit longer battery duration than Samsung Galaxy S21, because it has a 4050mAh battery capacity.
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