Compare phones
| Global Score | |
| 81 | 91.8 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 12 | Android 11 |
| -- | 2021-01-29 |
| -- | 5.97 x 2.80 x 0.31 inches |
| -- | 6.03 ounces |
| Black and White | Gray, Phantom pink, Violet and White |
| Aluminum and Ceramic | Aluminum and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| -- | $ 722.00 |
| Display / Screen | |
| 6.7 inches | 6.2 inches |
| 3200 x 1440 pixels | 2400 x 1080 pixels |
| AMOLED | Dynamic AMOLED |
| 524 pixels per inch | 424 pixels per inch |
| 1500 cd/m2 brightness | 1300 cd/m2 brightness |
| No touch screen | No touch screen |
| 9.7 | 9.2 |
| Performance | |
| Qualcomm Snapdragon 8+ Gen 1 SM8450 (4 nm) chipset | Qualcomm Snapdragon 888 chipset |
| processor | Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor |
| 8 GB RAM | 8 GB RAM |
| Adreno 730 GPU | Adreno 660 GPU |
| 6.21 | 9.63 |
| Storage | |
| 256 GB internal memory | 128 GB internal memory |
| No SD card slot | No SD card slot |
| 13.3 | 10.1 |
| Camera | |
| 50.00 MP + 20.00 MP | 12.00 MP + 10.00 MP |
| f/2.00 aperture | f/1.80 aperture |
| 24.00mm focal length | 26.00mm focal length |
| 0.5 inches (1/2") sensor | 0.57 inches (1/1.76") sensor |
| 7680 x 4320 (24 fps) video resolution | 7680 x 4320 (24 fps) video resolution |
| 1920 x 1080 (1920 fps) (Full HD) slow motion video | 1280 x 720 (960 fps) (HD) slow motion video |
| 12.32 | 10.78 |
| 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 | Nano SIM |
| 10.6 | 10.7 |
| Battery Life | |
| 4800mAh Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | Wireless Charging |
| 6.64 | 5.92 |
| Other Features | |
| Bluetooth 5.2 | Bluetooth 5.0 |
| GPS | GPS |
| -- | 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 |
Comparison review
Galaxy S21 is much better than Xiaomi 12S Ultra, getting a 91.8 score against 81. Both phones in our current comparison have Android OS (operating system), but Galaxy S21 has the older 11 version while Xiaomi 12S Ultra has Android 12 version. Galaxy S21 has a lot better hardware performance than Xiaomi 12S Ultra. They have 8 GB of RAM and a Octa-Core CPU.
The Xiaomi 12S Ultra has a bit better looking screen than Galaxy S21, because it has a bit greater screen pixels density, a little more brightness, a little bit bigger display and a higher 1440 x 3200px resolution. The Xiaomi 12S Ultra captures much clearer pictures and videos than Samsung Galaxy S21, because although it has a smaller back-facing camera sensor and a smaller aperture which is worse for low light photography, and they both have the same video quality and the same video frame rates, the Xiaomi 12S Ultra also counts with a much better 50 MP resolution back facing camera.
The Xiaomi 12S Ultra counts with a way bigger memory capacity for games and applications than Samsung Galaxy S21, because it has 256 GB internal memory. Xiaomi 12S Ultra counts with greater battery duration than Samsung Galaxy S21, because it has a 20% more battery capacity.
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