Compare phones
| Global Score | |
| 78.8 | 98.1 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 12 | Android 11 |
| 2021-12-28 | 2021-01-29 |
| 6.01 x 2.75 x 0.32 inches | 6.50 x 2.98 x 0.35 inches |
| 6.31 ounces | 8.04 ounces |
| Black, Blue, Green and Pink | Phantom black and Silver |
| Aluminum and Glass | Aluminum and Glass (Corning Gorilla Glass Victus) |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| -- | $ 966.00 |
| Display / Screen | |
| 6.3 inches | 6.8 inches |
| 2400 x 1080 pixels | 3200 x 1440 pixels |
| AMOLED | Dynamic AMOLED |
| 418 pixels per inch | 516 pixels per inch |
| 1100 cd/m2 brightness | 1500 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.9 | 9.8 |
| Performance | |
| Qualcomm Snapdragon 8 Gen1 SM8450 (4 nm) chipset | Qualcomm Snapdragon 888 chipset |
| processor | Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor |
| 8 GB RAM | 12 GB RAM |
| Adreno 730 GPU | Adreno 660 GPU |
| 6.21 | 9.72 |
| Storage | |
| 128 GB internal memory | 128 GB internal memory |
| No SD card slot | No SD card slot |
| 10.1 | 10.1 |
| Camera | |
| 50.00 MP + 32.00 MP | 108.00 MP + 40.00 MP |
| f/1.90 aperture | f/1.80 aperture |
| 26.00mm focal length | 24.00mm focal length |
| 0.64 inches (1/1.56") sensor | 0.75 inches (1/1.33") sensor |
| 7680 x 4320 (24 fps) 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 |
| 12.54 | 13.75 |
| 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, Dual SIM | Nano SIM |
| 10.6 | 10.7 |
| Battery Life | |
| 4500mAh Battery | 5000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | Wireless Charging |
| 6.32 | 6.8 |
| Other Features | |
| Bluetooth 5.2 | 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 12, getting a 98.1 score against 78.8. Both devices in our current comparison include Android OS (Operating System), but Samsung Galaxy S21 Ultra has the older 11 version while Xiaomi 12 has Android 12. Despite being the best phone in this comparison, the Samsung Galaxy S21 Ultra is an older, incredibly heavier and a little bit thicker phone than the Xiaomi 12.
Galaxy S21 Ultra has a sharper display than Xiaomi 12, because it has a just a bit higher screen pixels density, a bit bigger display, a better resolution of 1440 x 3200 and a brighter screen. The Xiaomi 12 and the Samsung Galaxy S21 Ultra both feature really similar memory capacity for applications, games, photos and videos, both of them have exactly the same 128 GB internal storage.
Galaxy S21 Ultra features a much powerful processor than Xiaomi 12, and although they both have 8 cpu cores, the Galaxy S21 Ultra also has more RAM. Galaxy S21 Ultra captures a bit better photographs and videos than Xiaomi 12, and although they both have the same 7680x4320 video resolution and the same video frame rates, the Galaxy S21 Ultra also has a bigger aperture, a back camera with lot more megapixels and a bigger back-facing camera sensor capturing higher quality videos and pictures.
The Galaxy S21 Ultra features a little longer battery duration than Xiaomi 12, because it has 5000mAh of battery capacity instead of 4500mAh.
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