| Global Score | |
| 81 | 77.8 |
| Basic Information | |
| Xiaomi | Xiaomi |
| Android 12 | Android 11 |
| -- | 2022-03-15 |
| -- | 6.01 x 2.75 x 0.32 inches |
| -- | 6.21 ounces |
| Black and White | Blue, Grey and Purple |
| Aluminum and Ceramic | Aluminum and Glass |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| Display / Screen | |
| 6.7 inches | 6.3 inches |
| 3200 x 1440 pixels | 2400 x 1080 pixels |
| AMOLED | AMOLED |
| 524 pixels per inch | 418 pixels per inch |
| 1500 cd/m2 brightness | 1100 cd/m2 brightness |
| No touch screen | No touch screen |
| 9.7 | 8.9 |
| Performance | |
| Qualcomm Snapdragon 8+ Gen 1 SM8450 (4 nm) chipset | Qualcomm Snapdragon 870 SM8250-AC (7 nm) chipset |
| processor | processor |
| 8 GB RAM | 8 GB RAM |
| Adreno 730 GPU | Adreno 650 GPU |
| 6.21 | 6.21 |
| 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 | 50.00 MP + 32.00 MP |
| f/2.00 aperture | f/1.90 aperture |
| 24.00mm focal length | 50.00mm focal length |
| 0.5 inches (1/2") 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 | 1920 x 1080 (960 fps) (Full HD) slow motion video |
| 12.32 | 11.88 |
| 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) and HSDPA |
| Nano SIM | Nano SIM, Dual SIM |
| 10.6 | 10.6 |
| Battery Life | |
| 4800mAh Battery | 4500mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 6.64 | 6.32 |
| Other Features | |
| Bluetooth 5.2 | Bluetooth 5.1 |
| GPS | GPS |
| -- | NFC |
| -- | Infra-red port |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
Xiaomi 12S Ultra is a little bit better than the Xiaomi 12X, getting a global score of 81 against 77.8. Xiaomi 12S Ultra is a much thinner and a lot lighter device than the Xiaomi 12X. These devices have Android OS, but the Xiaomi 12S Ultra has newer 12 version and Xiaomi 12X has Android 11, so it provides some extra features.
The Xiaomi 12S Ultra counts with a bit more vivid display than Xiaomi 12X, because it has a brighter screen, a better 1440 x 3200px resolution, more pixels per inch in the display and a bit bigger screen. The Xiaomi 12X features a processor that's just as good as the processing unit in Xiaomi 12S Ultra, they have 8 cores and a 8 GB RAM.
The Xiaomi 12S Ultra has a much better storage capacity for applications, games, photos and videos than Xiaomi 12X, because it has 256 GB internal storage capacity. Xiaomi 12S Ultra has a bit superior battery life than Xiaomi 12X, because it has 4800mAh of battery capacity against 4500mAh. The Xiaomi 12S Ultra takes just a bit better photographs and videos than Xiaomi 12X, although it has a tinier aperture which is not so good for low-light photography and videos, they both have the same video definition, a 50 megapixels back camera and the same 24 fps video frame rate.
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