Compare phones
| Global Score | |
| 89 | 98.1 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 11 | Android 11 |
| 2021-08-10 | 2021-01-29 |
| 6.40 x 2.97 x 0.31 inches | 6.50 x 2.98 x 0.35 inches |
| 7.94 ounces | 8.04 ounces |
| Ceramic Black, Ceramic White and Shadow Gray | Phantom black and Silver |
| Aluminum and Ceramic | Aluminum and Glass (Corning Gorilla Glass Victus) |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| -- | $ 966.00 |
| Display / Screen | |
| 6.7 inches | 6.8 inches |
| 2400 x 1080 pixels | 3200 x 1440 pixels |
| AMOLED | Dynamic AMOLED |
| 393 pixels per inch | 516 pixels per inch |
| -- | 1500 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.1 | 9.8 |
| Performance | |
| Qualcomm Snapdragon 888+ SM8350-AC chipset | Qualcomm Snapdragon 888 chipset |
| Kryo 680 Prime, 64-bit, 5 nm (Octa-Core 3000 MHz) processor | Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor |
| 8 GB RAM | 12 GB RAM |
| Adreno 660 GPU | Adreno 660 GPU |
| 9.72 | 9.72 |
| 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 + 20.00 MP | 108.00 MP + 40.00 MP |
| f/1.90 aperture | f/1.80 aperture |
| 24.00mm focal length | 24.00mm focal length |
| 0.75 inches (1/1.33") sensor | 0.75 inches (1/1.33") sensor |
| 7680 x 4320 (24 fps) video resolution | 7680 x 4320 (24 fps) video resolution |
| 1920 x 1080 (480 fps) (Full HD) slow motion video | 1280 x 720 (960 fps) (HD) slow motion video |
| 13.75 | 13.75 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G) and HSDPA | 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM |
| 10.6 | 10.7 |
| Battery Life | |
| 4500mAh Li - Ion Battery | 5000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | Wireless Charging |
| 6.32 | 6.8 |
| Other Features | |
| Bluetooth 5.2 | Bluetooth 5.1 |
| 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
Galaxy S21 Ultra is better than Xiaomi Mi Mix 4, having a 98.1 score against 89. Even being the best we are comparing, the Galaxy S21 Ultra body is thicker and just a bit heavier than Xiaomi Mi Mix 4. Both phones we are comparing here include the same Android 11 operating system, so you shouldn't notice any difference in that aspect.
The Galaxy S21 Ultra has a processing unit that's very similar to Xiaomi Mi Mix 4's CPU, and although the Galaxy S21 Ultra has 4 GB more RAM memory, they both have the same number of cores. Samsung Galaxy S21 Ultra counts with a much more vibrant screen than Xiaomi Mi Mix 4, because it has a better amount of pixels per inch in the display, a higher resolution of 1440 x 3200px and a quite larger screen.
The Galaxy S21 Ultra counts with a camera that's very similar to Xiaomi Mi Mix 4's camera, and although the Galaxy S21 Ultra has a larger aperture, they both have the same resolution back camera, a 0.75 inches sensor, the same 7680x4320 video quality and the same video frame rates. Galaxy S21 Ultra and Xiaomi Mi Mix 4 count with extremely similar storage capacity to install games and applications, they have the same 128 GB internal storage capacity.
The Samsung Galaxy S21 Ultra features just a bit longer battery duration than Xiaomi Mi Mix 4, because it has an 11 percent larger battery capacity.
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