Compare phones
| Global Score | |
| 98.1 | 76.2 |
| Basic Information | |
| Samsung | Xiaomi |
| Android 11 | Android 6.0 Marshmallow |
| 2021-01-29 | 2016-11-04 |
| 6.50 x 2.98 x 0.35 inches | 6.25 x 3.22 x 0.31 inches |
| 8.04 ounces | 7.37 ounces |
| Phantom black and Silver | Black and White |
| Aluminum and Glass (Corning Gorilla Glass Victus) | Ceramic |
| Scratch-Resistant Glass | -- |
| $ 966.00 | $ 590.00 |
| Display / Screen | |
| 6.8 inches | 6.4 inches |
| 3200 x 1440 pixels | 2040 x 1080 pixels |
| Dynamic AMOLED | IPS LCD |
| 516 pixels per inch | 361 pixels per inch |
| 1500 cd/m2 brightness | 500 cd/m2 brightness |
| No touch screen | No touch screen |
| 9.8 | 8.3 |
| Performance | |
| Qualcomm Snapdragon 888 chipset | Qualcomm Snapdragon 821 MSM8996 Pro chipset |
| Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor | Kryo, 64-bit (Quad-Core 2340 MHz) processor |
| 12 GB RAM | 4 GB RAM |
| Adreno 660 GPU | Adreno 530 GPU |
| 9.72 | 9 |
| Storage | |
| 128 GB internal memory | 128 GB internal memory |
| No SD card slot | No SD card slot |
| 10.1 | 10.1 |
| Camera | |
| 108.00 MP + 40.00 MP | 16.00 MP + 5.00 MP |
| f/1.80 aperture | f/2.00 aperture |
| 24.00mm focal length | -- |
| 0.75 inches (1/1.33") sensor | 0.33 inches (1/3.06") sensor |
| 7680 x 4320 (24 fps) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 1280 x 720 (960 fps) (HD) slow motion video | 1280 x 720 (120 fps) (HD) slow motion video |
| 13.75 | 9.79 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | LTE (4G) and HSPA |
| Nano SIM | Nano SIM, Dual SIM |
| 10.7 | 6 |
| Battery Life | |
| 5000mAh Li - Polymer Battery | 4400mAh Li - Ion Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 6.8 | 6.24 |
| Other Features | |
| Bluetooth 5.1 | Bluetooth 4.2 |
| GPS | GPS |
| NFC | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | -- |
Comparison review
The Galaxy S21 Ultra is much better than the Xiaomi Mi MIX, getting a overall score of 98.1 against 76.2. The Galaxy S21 Ultra construction is much newer than Xiaomi Mi MIX's, although it's somewhat thicker and just a bit heavier. These phones use Android OS (operating system), but the Galaxy S21 Ultra has an older 11 version while Xiaomi Mi MIX has Android 6.0 Marshmallow version.
The Samsung Galaxy S21 Ultra counts with just a little better processing power than Xiaomi Mi MIX, because it has more RAM and a greater number of cores. The Samsung Galaxy S21 Ultra counts with a better looking screen than Xiaomi Mi MIX, because it has a lot brighter screen, a little bigger display, a better pixel density and a much higher resolution of 1440 x 3200.
The Xiaomi Mi MIX features as much memory for games and applications as the Galaxy S21 Ultra, they have the same internal memory capacity. Samsung Galaxy S21 Ultra features a lot better camera than Xiaomi Mi MIX, because it has a larger aperture, a lot higher video quality, a camera in the back with way more mega pixels and a lot larger sensor shooting much higher quality photos.
Galaxy S21 Ultra has just a little bit longer battery duration than Xiaomi Mi MIX, because it has a 14% larger battery capacity.
The Galaxy S21 Ultra costs a lot more than the Xiaomi Mi MIX, but you can get a much better phone for that extra money.
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