| Global Score | |
| 81 | 78.8 |
| Basic Information | |
| Xiaomi | Microsoft |
| Android 12 | Android 10 |
| -- | 2020-09-10 |
| -- | 7.36 x 5.72 x 0.19 inches |
| -- | 8.82 ounces |
| Black and White | Glacier |
| Aluminum and Ceramic | Glass (Corning Gorilla Glass 5) |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| -- | $ 540.00 |
| Display / Screen | |
| 6.7 inches | 8.1 inches |
| 3200 x 1440 pixels | 2700 x 1800 pixels |
| AMOLED | AMOLED |
| 524 pixels per inch | 401 pixels per inch |
| 1500 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 9.7 | 8.2 |
| Performance | |
| Qualcomm Snapdragon 8+ Gen 1 SM8450 (4 nm) chipset | Qualcomm Snapdragon 855 SM8150 chipset |
| processor | Kryo 485, 64-bit, 7 nm (Octa-Core 2840 MHz) processor |
| 8 GB RAM | 6 GB RAM |
| Adreno 730 GPU | Adreno 640 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 | 11.00 MP |
| f/2.00 aperture | f/2.00 aperture |
| 24.00mm focal length | -- |
| 0.5 inches (1/2") sensor | -- |
| 7680 x 4320 (24 fps) video resolution | 3840 x 2160 (60 fps) (4K) video resolution |
| 1920 x 1080 (1920 fps) (Full HD) slow motion video | -- |
| 12.32 | 8.91 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G) and HSDPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM | Nano SIM, Dual SIM |
| 10.6 | 6.7 |
| Battery Life | |
| 4800mAh Battery | 3577mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 6.64 | 5.52 |
| Other Features | |
| Bluetooth 5.2 | Bluetooth 5.0 |
| GPS | GPS |
| 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 slightly better than Microsoft Surface Duo, with a general score of 81 against 78.8. Xiaomi 12S Ultra is a way lighter and a lot thinner phone than the Microsoft Surface Duo. These phones use Android OS (Operating System), but the Xiaomi 12S Ultra has 12 version and Microsoft Surface Duo has Android 10 version.
The Microsoft Surface Duo has a much more powerful CPU than Xiaomi 12S Ultra, although it has a smaller amount of RAM memory, they both have a Octa-Core processor. Xiaomi 12S Ultra counts with a sharper display than Microsoft Surface Duo, because although it has a quite smaller display and a quite lower 1440 x 3200 resolution, it also counts with a better display density.
Xiaomi 12S Ultra captures a lot better photos and videos than Microsoft Surface Duo, and although they both have a same size camera aperture, the Xiaomi 12S Ultra also has a way better video quality and a lot more mega-pixels back-facing camera. The Xiaomi 12S Ultra has a very superior memory capacity to install applications and games or saving photos and videos than Microsoft Surface Duo, because it has more internal storage.
The Xiaomi 12S Ultra counts with a very superior battery life than Microsoft Surface Duo, because it has 4800mAh of battery capacity instead of 3577mAh.
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