Compare phones
| Global Score | |
| 78.8 | 79 |
| Basic Information | |
| Microsoft | Xiaomi |
| Android 10 | Android 11, 10 |
| 2020-09-10 | 2020-04-07 |
| 7.36 x 5.72 x 0.19 inches | 6.53 x 3.02 x 0.35 inches |
| 8.82 ounces | 7.37 ounces |
| Glacier | Aurora blue, Glacier white and Interstellar grey |
| Glass (Corning Gorilla Glass 5) | Glass (Corning Gorilla Glass 5) |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 540.00 | $ 249.00 |
| Display / Screen | |
| 8.1 inches | 6.7 inches |
| 2700 x 1800 pixels | 2400 x 1080 pixels |
| AMOLED | IPS LCD |
| 401 pixels per inch | 393 pixels per inch |
| No touch screen | No touch screen |
| 8.2 | 8 |
| Performance | |
| Qualcomm Snapdragon 855 SM8150 chipset | Qualcomm Snapdragon 720G SM7125 chipset |
| Kryo 485, 64-bit, 7 nm (Octa-Core 2840 MHz) processor | Kryo 465, 64-bit, 8 nm (Octa-Core 2300 MHz) processor |
| 6 GB RAM | 4 GB RAM |
| Adreno 640 GPU | Adreno 618 GPU |
| 9.63 | 9.27 |
| Storage | |
| 128 GB internal memory | 64 GB internal memory |
| No SD card slot | microSDXC (up to 512 GB) external memory slot |
| 10.1 | 11.74 |
| Camera | |
| 11.00 MP | 48.00 MP + 16.00 MP |
| f/2.00 aperture | f/1.80 aperture |
| -- | 0.5 inches (1/2") sensor |
| 3840 x 2160 (60 fps) (4K) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| -- | 1280 x 720 (960 fps) (HD) slow motion video |
| 8.91 | 11.55 |
| 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 | |
| 3577mAh Battery | 5020mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.52 | 6.8 |
| 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
Xiaomi Redmi Note 9S has a score of 79, which is slightly better than Microsoft Surface Duo's 78.8 general score. These devices include Android OS, but the Xiaomi Redmi Note 9S has the newer 11 version while Microsoft Surface Duo has Android 10 version. Xiaomi Redmi Note 9S's design is noticeably thicker but lighter than the Microsoft Surface Duo, and both of them were released with only a few months difference.
The Microsoft Surface Duo counts with a bit more vivid display than Xiaomi Redmi Note 9S, because it has a bit better display pixels density, a better resolution of 1800 x 2700px and a larger display. The Microsoft Surface Duo counts with a bit better processor than Xiaomi Redmi Note 9S, and although they both have 8 cpu cores, the Microsoft Surface Duo also has 2 GB more RAM.
Xiaomi Redmi Note 9S takes greater videos and photos than Microsoft Surface Duo, because although it has lower 30 frames per second video frame rates, and they both have the same video quality, the Xiaomi Redmi Note 9S also counts with a larger aperture for better low light captures and video and a lot higher resolution back-facing camera.
The Xiaomi Redmi Note 9S has a bigger memory to install applications and games or saving photos and videos than Microsoft Surface Duo, because although it has just 64 GB internal memory capacity, it also counts with a slot for SD memory cards that supports up to 512 GB. Xiaomi Redmi Note 9S counts with a way better battery life than Microsoft Surface Duo, because it has a 5020mAh battery size instead of 3577mAh.
Xiaomi Redmi Note 9S is not only the best devices of the ones we compare here, but it's also very cheap compared to the other devices.
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