Compare phones
| Global Score | |
| 78.2 | 98.1 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 10 | Android 11 |
| 2021-01-18 | 2021-01-29 |
| 6.39 x 3.04 x 0.38 inches | 6.50 x 2.98 x 0.35 inches |
| 6.98 ounces | 8.04 ounces |
| Carbon gray, Ocean green, Sunrise orange and Twilight blue | Phantom black and Silver |
| Plastic and Plastic | Aluminum and Glass (Corning Gorilla Glass Victus) |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| -- | $ 966.00 |
| Display / Screen | |
| 6.5 inches | 6.8 inches |
| 2340 x 1080 pixels | 3200 x 1440 pixels |
| IPS LCD | Dynamic AMOLED |
| 396 pixels per inch | 516 pixels per inch |
| -- | 1500 cd/m2 brightness |
| No touch screen | No touch screen |
| 8 | 9.8 |
| Performance | |
| Qualcomm Snapdragon 662 SM6115 chipset | Qualcomm Snapdragon 888 chipset |
| Kryo 260, 64-bit, 11 nm (Octa-Core 2000 MHz) processor | Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor |
| 4 GB RAM | 12 GB RAM |
| Adreno 610 GPU | Adreno 660 GPU |
| 9.09 | 9.72 |
| Storage | |
| 64 GB internal memory | 128 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | No SD card slot |
| 11.74 | 10.1 |
| Camera | |
| 48.00 MP + 8.00 MP | 108.00 MP + 40.00 MP |
| f/1.80 aperture | f/1.80 aperture |
| -- | 24.00mm focal length |
| 0.5 inches (1/2") sensor | 0.75 inches (1/1.33") sensor |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 7680 x 4320 (24 fps) video resolution |
| -- | 1280 x 720 (960 fps) (HD) slow motion video |
| 10.78 | 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 | |
| 6000mAh Battery | 5000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 7.52 | 6.8 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.1 |
| GPS | GPS |
| -- | NFC |
| Infra-red port | -- |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Light Sensor and Proximity Sensor | Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
Galaxy S21 Ultra is much better than Xiaomi Redmi 9T, getting a 98.1 score against 78.2. Both phones in our current comparison include Android operating system, but Galaxy S21 Ultra has 11 version and Xiaomi Redmi 9T has Android 10 version. Galaxy S21 Ultra's body is somewhat heavier but just a little thinner than Xiaomi Redmi 9T, and both were released with only 0 months difference.
The Samsung Galaxy S21 Ultra counts with a bit faster processing unit than Xiaomi Redmi 9T, and although they both have 8 cores, the Samsung Galaxy S21 Ultra also has a greater amount of RAM memory. Samsung Galaxy S21 Ultra features a way better screen than Xiaomi Redmi 9T, because it has a better screen pixels density, a higher 1440 x 3200 resolution and a bit larger display.
The Galaxy S21 Ultra has a very superior camera than Xiaomi Redmi 9T, and although they both have a F1.8 aperture, the Galaxy S21 Ultra also has a way better video quality, a camera in the back with much more mega-pixels and a way bigger back-facing camera sensor providing a lot better image quality.
Xiaomi Redmi 9T has a better storage capacity for apps and games than Samsung Galaxy S21 Ultra, because although it has 0 less internal storage, it also counts with a slot for SD memory cards that holds up to 512 GB. Xiaomi Redmi 9T has improved battery life than Galaxy S21 Ultra, because it has a 20% bigger battery size.
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