Compare phones
| Global Score | |
| 82.2 | 98.1 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 10, 9.0 Pie | Android 11 |
| 2019-06-17 | 2021-01-29 |
| 6.17 x 2.93 x 0.35 inches | 6.50 x 2.98 x 0.35 inches |
| 6.74 ounces | 8.04 ounces |
| Carbon Black, Flame Red and Glacier Blue | Phantom black and Silver |
| Metal and Metal | Aluminum and Glass (Corning Gorilla Glass Victus) |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| -- | $ 966.00 |
| Display / Screen | |
| 6.4 inches | 6.8 inches |
| 2340 x 1080 pixels | 3200 x 1440 pixels |
| AMOLED | Dynamic AMOLED |
| 403 pixels per inch | 516 pixels per inch |
| 430 cd/m2 brightness | 1500 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.4 | 9.8 |
| Performance | |
| Qualcomm Snapdragon 730 SM7150-AA chipset | Qualcomm Snapdragon 888 chipset |
| Kryo 470, 64-bit, 8 nm (Octa-Core 2200 MHz) processor | Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor |
| 6 GB RAM | 12 GB RAM |
| Adreno 618 GPU | Adreno 660 GPU |
| 9.27 | 9.72 |
| Storage | |
| 128 GB internal memory | 128 GB internal memory |
| No SD card slot | No SD card slot |
| 10.1 | 10.1 |
| Camera | |
| 48.00 MP + 20.00 MP | 108.00 MP + 40.00 MP |
| f/1.80 aperture | f/1.80 aperture |
| 26.00mm focal length | 24.00mm focal length |
| 0.5 inches (1/2") sensor | 0.75 inches (1/1.33") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 7680 x 4320 (24 fps) video resolution |
| 1920 x 1080 (960 fps) (Full HD) slow motion video | 1280 x 720 (960 fps) (HD) slow motion video |
| 11.66 | 13.75 |
| 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 | |
| 4000mAh Battery | 5000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 5.92 | 6.8 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.1 |
| GPS | GPS |
| NFC | 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 | FM Radio |
Comparison review
The Galaxy S21 Ultra has a score of 98.1, which is better than Xiaomi Mi 9T's global score of 82.2. Both phones in our current comparison use Android OS (operating system), but the Galaxy S21 Ultra has a more recent 11 version while Xiaomi Mi 9T has Android 10. Galaxy S21 Ultra's body has the same thickness than the Xiaomi Mi 9T, but it's heavier.
The Samsung Galaxy S21 Ultra counts with a much better screen than Xiaomi Mi 9T, because it has a way brighter screen, a bit larger display, a higher screen pixels density and a better 1440 x 3200 pixels resolution. The Galaxy S21 Ultra counts with a bit faster CPU than Xiaomi Mi 9T, and although they both have a Octa-Core processing unit, the Galaxy S21 Ultra also has more RAM memory.
The Samsung Galaxy S21 Ultra features as much storage capacity to install applications and games or saving photos and videos as Xiaomi Mi 9T, both have equal internal memory. Galaxy S21 Ultra has a much better camera than Xiaomi Mi 9T, and although they both have a same size aperture, the Galaxy S21 Ultra also has a lot better 7680x4320 video resolution, a lot larger sensor which gives a lot higher image and video quality and a camera in the back with a much higher resolution.
Galaxy S21 Ultra features improved battery life than Xiaomi Mi 9T, because it has 5000mAh of battery capacity instead of 4000mAh.
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