Compare phones
| Global Score | |
| 91.8 | 81 |
| Basic Information | |
| Samsung | Xiaomi |
| Android 11 | Android 12 |
| 2021-01-29 | -- |
| 5.97 x 2.80 x 0.31 inches | -- |
| 6.03 ounces | -- |
| Gray, Phantom pink, Violet and White | Black and White |
| Aluminum and Plastic | Aluminum and Ceramic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 722.00 | -- |
| Display / Screen | |
| 6.2 inches | 6.7 inches |
| 2400 x 1080 pixels | 3200 x 1440 pixels |
| Dynamic AMOLED | AMOLED |
| 424 pixels per inch | 524 pixels per inch |
| 1300 cd/m2 brightness | 1500 cd/m2 brightness |
| No touch screen | No touch screen |
| 9.2 | 9.7 |
| Performance | |
| Qualcomm Snapdragon 888 chipset | Qualcomm Snapdragon 8+ Gen 1 SM8450 (4 nm) chipset |
| Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor | processor |
| 8 GB RAM | 8 GB RAM |
| Adreno 660 GPU | Adreno 730 GPU |
| 9.63 | 6.21 |
| Storage | |
| 128 GB internal memory | 256 GB internal memory |
| No SD card slot | No SD card slot |
| 10.1 | 13.3 |
| Camera | |
| 12.00 MP + 10.00 MP | 50.00 MP + 20.00 MP |
| f/1.80 aperture | f/2.00 aperture |
| 26.00mm focal length | 24.00mm focal length |
| 0.57 inches (1/1.76") sensor | 0.5 inches (1/2") sensor |
| 7680 x 4320 (24 fps) video resolution | 7680 x 4320 (24 fps) video resolution |
| 1280 x 720 (960 fps) (HD) slow motion video | 1920 x 1080 (1920 fps) (Full HD) slow motion video |
| 10.78 | 12.32 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G) and HSDPA |
| Nano SIM | Nano SIM |
| 10.7 | 10.6 |
| Battery Life | |
| 4000mAh Li - Polymer Battery | 4800mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | Wireless Charging |
| 5.92 | 6.64 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.2 |
| GPS | GPS |
| NFC | -- |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | -- |
Comparison review
The Samsung Galaxy S21 is better than the Xiaomi 12S Ultra, with a 91.8 score against 81. Both of these devices have Android OS (Operating System), but Samsung Galaxy S21 has older 11 version and Xiaomi 12S Ultra has Android 12 version. The Galaxy S21 counts with a lot better processing power than Xiaomi 12S Ultra. Both have 8 GB of RAM memory and 8 cores.
Xiaomi 12S Ultra counts with just a bit better looking screen than Galaxy S21, because it has a quite larger screen, a better 1440 x 3200px resolution, a little bit brighter screen and a just a little more pixels per inch of screen. Xiaomi 12S Ultra counts with a lot bigger storage capacity for games and applications than Galaxy S21, because it has 256 GB internal storage capacity.
Xiaomi 12S Ultra counts with better battery duration than Galaxy S21, because it has a 4800mAh battery capacity. Xiaomi 12S Ultra takes much clearer photos and videos than Galaxy S21, because although it has a smaller back-facing camera sensor capturing less light and washed colors and a smaller diafragm aperture which is worse for shooting images in low light environments, and they both have the same video quality and the same 24 frames per second video frame rate, the Xiaomi 12S Ultra also counts with a lot higher 50 megapixels resolution back facing camera.
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