Compare phones
| Global Score | |
| 98.1 | 78.8 |
| Basic Information | |
| Samsung | Xiaomi |
| Android 11 | Android 12 |
| 2021-01-29 | 2021-12-28 |
| 6.50 x 2.98 x 0.35 inches | 6.01 x 2.75 x 0.32 inches |
| 8.04 ounces | 6.31 ounces |
| Phantom black and Silver | Black, Blue, Green and Pink |
| Aluminum and Glass (Corning Gorilla Glass Victus) | Aluminum and Glass |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 966.00 | -- |
| Display / Screen | |
| 6.8 inches | 6.3 inches |
| 3200 x 1440 pixels | 2400 x 1080 pixels |
| Dynamic AMOLED | AMOLED |
| 516 pixels per inch | 418 pixels per inch |
| 1500 cd/m2 brightness | 1100 cd/m2 brightness |
| No touch screen | No touch screen |
| 9.8 | 8.9 |
| Performance | |
| Qualcomm Snapdragon 888 chipset | Qualcomm Snapdragon 8 Gen1 SM8450 (4 nm) chipset |
| Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor | processor |
| 12 GB RAM | 8 GB RAM |
| Adreno 660 GPU | Adreno 730 GPU |
| 9.72 | 6.21 |
| Storage | |
| 128 GB internal memory | 128 GB internal memory |
| No SD card slot | No SD card slot |
| 10.1 | 10.1 |
| Camera | |
| 108.00 MP + 40.00 MP | 50.00 MP + 32.00 MP |
| f/1.80 aperture | f/1.90 aperture |
| 24.00mm focal length | 26.00mm focal length |
| 0.75 inches (1/1.33") sensor | 0.64 inches (1/1.56") 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 (960 fps) (Full HD) slow motion video |
| 13.75 | 12.54 |
| 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, Dual SIM |
| 10.7 | 10.6 |
| Battery Life | |
| 5000mAh Li - Polymer Battery | 4500mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | Wireless Charging |
| 6.8 | 6.32 |
| Other Features | |
| Bluetooth 5.1 | Bluetooth 5.2 |
| GPS | GPS |
| NFC | NFC |
| -- | Infra-red port |
| 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
Galaxy S21 Ultra has a general score of 98.1, which is much better than Xiaomi 12's 78.8 overall score. Even being the best phone in this comparison, Galaxy S21 Ultra's body is older, just a little bit thicker and heavier than the Xiaomi 12. These phones have Android operating system, but the Galaxy S21 Ultra has the previous 11 version while Xiaomi 12 has Android 12.
The Samsung Galaxy S21 Ultra has a sharper screen than Xiaomi 12, because it has a quite greater display density, a brighter display, a little larger display and a higher resolution of 1440 x 3200px. Galaxy S21 Ultra counts with a lot better hardware performance than Xiaomi 12, and although they both have the same number of cores, the Galaxy S21 Ultra also has a greater amount of RAM.
Xiaomi 12's memory for applications and games is very similar to the Samsung Galaxy S21 Ultra one, both have the same 128 GB internal memory capacity. The Samsung Galaxy S21 Ultra captures clearer photos and videos than Xiaomi 12, and although they both have the same 7680x4320 video resolution and the same video frame rate, the Samsung Galaxy S21 Ultra also has a back-facing camera with lot more mega-pixels, a bigger camera sensor providing a better image quality and a bigger diafragm aperture for better photography and video in low light environments.
Samsung Galaxy S21 Ultra has a bit better battery duration than Xiaomi 12, because it has 5000mAh of battery capacity.
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