Compare phones
| Global Score | |
| 79 | 78.8 |
| Basic Information | |
| Xiaomi | Microsoft |
| Android 11, 10 | Android 10 |
| 2020-04-07 | 2020-09-10 |
| 6.53 x 3.02 x 0.35 inches | 7.36 x 5.72 x 0.19 inches |
| 7.37 ounces | 8.82 ounces |
| Aurora blue, Glacier white and Interstellar grey | Glacier |
| Glass (Corning Gorilla Glass 5) | Glass (Corning Gorilla Glass 5) |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 249.00 | $ 540.00 |
| Display / Screen | |
| 6.7 inches | 8.1 inches |
| 2400 x 1080 pixels | 2700 x 1800 pixels |
| IPS LCD | AMOLED |
| 393 pixels per inch | 401 pixels per inch |
| No touch screen | No touch screen |
| 8 | 8.2 |
| Performance | |
| Qualcomm Snapdragon 720G SM7125 chipset | Qualcomm Snapdragon 855 SM8150 chipset |
| Kryo 465, 64-bit, 8 nm (Octa-Core 2300 MHz) processor | Kryo 485, 64-bit, 7 nm (Octa-Core 2840 MHz) processor |
| 4 GB RAM | 6 GB RAM |
| Adreno 618 GPU | Adreno 640 GPU |
| 9.27 | 9.63 |
| Storage | |
| 64 GB internal memory | 128 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | No SD card slot |
| 11.74 | 10.1 |
| Camera | |
| 48.00 MP + 16.00 MP | 11.00 MP |
| f/1.80 aperture | f/2.00 aperture |
| 0.5 inches (1/2") sensor | -- |
| 3840 x 2160 (30 fps) (4K) video resolution | 3840 x 2160 (60 fps) (4K) video resolution |
| 1280 x 720 (960 fps) (HD) slow motion video | -- |
| 11.55 | 8.91 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM, Dual SIM |
| 6.7 | 6.7 |
| Battery Life | |
| 5020mAh Li - Polymer Battery | 3577mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| 6.8 | 5.52 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| 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 |
Comparison review
The Xiaomi Redmi Note 9S is a bit better than the Microsoft Surface Duo, getting a general score of 79 against 78.8. Xiaomi Redmi Note 9S's design is lighter but notably thicker than Microsoft Surface Duo, and both of them were released with only a few months difference. These phones use Android OS, but the Xiaomi Redmi Note 9S has the newer 11 version and Microsoft Surface Duo has Android 10.
The Microsoft Surface Duo counts with a bit better performance than Xiaomi Redmi Note 9S, and although they both have 8 CPU cores, the Microsoft Surface Duo also has a higher amount of RAM memory. Microsoft Surface Duo has a little more vivid display than Xiaomi Redmi Note 9S, because it has a little bit greater pixels count in each inch in the display, a higher resolution of 1800 x 2700 and a larger display.
The Xiaomi Redmi Note 9S features a bigger storage for applications and games than Microsoft Surface Duo, because although it has less internal storage capacity, it also counts with a slot for an SD memory card that admits up to 512 GB. The Xiaomi Redmi Note 9S has a superior battery life than Microsoft Surface Duo, because it has a 40% larger battery size.
The Xiaomi Redmi Note 9S counts with a way better camera than Microsoft Surface Duo, because although it has worse 30 fps video frame rates, and they both have the same 3840x2160 video quality, the Xiaomi Redmi Note 9S also counts with a lot more MP camera in the back and a bigger aperture to capture better low-light images.
Xiaomi Redmi Note 9S not only is the best devices in this comparison, but it's also a lot cheaper.
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