Compare phones
| Global Score | |
| 81.4 | 98.1 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 9.0 Pie | Android 11 |
| 2019-04-15 | 2021-01-29 |
| 5.81 x 2.78 x 0.29 inches | 6.50 x 2.98 x 0.35 inches |
| 5.47 ounces | 8.04 ounces |
| 16 777 216 | Phantom black and Silver |
| -- | Aluminum and Glass (Corning Gorilla Glass Victus) |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| -- | $ 966.00 |
| Display / Screen | |
| 6 inches | 6.8 inches |
| 2340 x 1080 pixels | 3200 x 1440 pixels |
| AMOLED | Dynamic AMOLED |
| 430 pixels per inch | 516 pixels per inch |
| 600 cd/m2 brightness | 1500 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.7 | 9.8 |
| Performance | |
| Qualcomm Snapdragon 712 SDM712 chipset | Qualcomm Snapdragon 888 chipset |
| Kryo 360, 64-bit, 10 nm (Octa-Core 2300 MHz) processor | Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor |
| 6 GB RAM | 12 GB RAM |
| Adreno 616 GPU | Adreno 660 GPU |
| 9.36 | 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 |
| 1280 x 720 (960 fps) (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 and HSUPA | 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM |
| 6.3 | 10.7 |
| Battery Life | |
| 3070mAh Battery | 5000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 5.04 | 6.8 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.1 |
| GPS | GPS |
| NFC | NFC |
| Infra-red port | -- |
| 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 Samsung Galaxy S21 Ultra is a lot better than the Xiaomi Mi 9 SE, with a 98.1 score against 81.4. Both phones in this comparison review work with Android OS (Operating System), but the Samsung Galaxy S21 Ultra has older 11 version while Xiaomi Mi 9 SE has Android 9.0 Pie. Although the Samsung Galaxy S21 Ultra is newer than Xiaomi Mi 9 SE, it is way heavier and somewhat thicker.
Galaxy S21 Ultra features a more vivid display than Xiaomi Mi 9 SE, because it has a really brighter screen, a little bit larger screen, a little better screen density and a better 1440 x 3200 resolution. The Samsung Galaxy S21 Ultra counts with as much storage capacity to install games and applications as the Xiaomi Mi 9 SE one, they have exactly the same 128 GB internal storage capacity.
The Galaxy S21 Ultra features just a little better processing power than Xiaomi Mi 9 SE, and although they both have a Octa-Core processing unit, the Galaxy S21 Ultra also has more RAM. Samsung Galaxy S21 Ultra counts with a better camera than Xiaomi Mi 9 SE, and although they both have the same aperture, the Samsung Galaxy S21 Ultra also has a lot higher video resolution, a much more MP camera in the back and a much larger camera sensor providing a much higher image quality.
The Galaxy S21 Ultra counts with a very superior battery duration than Xiaomi Mi 9 SE, because it has 5000mAh of battery capacity against 3070mAh.
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