Compare phones
| Global Score | |
| 76.7 | 78.8 |
| Basic Information | |
| Xiaomi | Microsoft |
| Android 11 | Android 10 |
| 2021-05-27 | 2020-09-10 |
| 6.23 x 2.96 x 0.33 inches | 7.36 x 5.72 x 0.19 inches |
| 6.70 ounces | 8.82 ounces |
| Moonlight White, Neptune Blue and Space Black, | Glacier |
| Glass and Plastic | Glass (Corning Gorilla Glass 5) |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| -- | $ 540.00 |
| Display / Screen | |
| 6.3 inches | 8.1 inches |
| 2340 x 1080 pixels | 2700 x 1800 pixels |
| IPS LCD | AMOLED |
| 409 pixels per inch | 401 pixels per inch |
| No touch screen | No touch screen |
| 8.1 | 8.2 |
| Performance | |
| MediaTek Helio G85 MT6769Z chipset | Qualcomm Snapdragon 855 SM8150 chipset |
| Cortex-A75, 64-bit, 12 nm (Octa-Core 2000 MHz) processor | Kryo 485, 64-bit, 7 nm (Octa-Core 2840 MHz) processor |
| 4 GB RAM | 6 GB RAM |
| Mali G52 MC2 GPU | Adreno 640 GPU |
| 9.09 | 9.63 |
| Storage | |
| 64 GB internal memory | 128 GB internal memory |
| microSDXC (up to 128 GB) external memory slot | No SD card slot |
| 10.02 | 10.1 |
| Camera | |
| 48.00 MP + 13.00 MP | 11.00 MP |
| f/1.80 aperture | f/2.00 aperture |
| 0.5 inches (1/2") sensor | -- |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 3840 x 2160 (60 fps) (4K) video resolution |
| 1280 x 720 (120 fps) (HD) slow motion video | -- |
| 11 | 8.91 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM | Nano SIM, Dual SIM |
| 6.6 | 6.7 |
| Battery Life | |
| 4000mAh Li - Polymer Battery | 3577mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.92 | 5.52 |
| Other Features | |
| Bluetooth 5.2 | 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 Microsoft Surface Duo is a bit better than the Xiaomi Redmi Note 8 2021, getting a 78.8 score against 76.7. The Microsoft Surface Duo body is much thinner but much heavier than the Xiaomi Redmi Note 8 2021, and both were only released with a few months difference. Both of these devices have Android OS (Operating System), but Microsoft Surface Duo has the older 10 version and Xiaomi Redmi Note 8 2021 has Android 11 version.
Microsoft Surface Duo features a bit faster processing unit than Xiaomi Redmi Note 8 2021, and although they both have the same number of cores, the Microsoft Surface Duo also has 2 GB more RAM memory. The Microsoft Surface Duo features a bit more vivid display than Xiaomi Redmi Note 8 2021, because although it has a just a little lower pixels number in each display inch, it also counts with a higher resolution of 1800 x 2700px and a bigger screen.
Microsoft Surface Duo counts with a slightly bigger storage for apps and games than Xiaomi Redmi Note 8 2021, because although it has no external memory card slot, it also counts with 128 GB internal memory capacity. The Xiaomi Redmi Note 8 2021 counts with just a little better battery performance than Microsoft Surface Duo, because it has 4000mAh of battery capacity.
The Xiaomi Redmi Note 8 2021 features a much better camera than Microsoft Surface Duo, because although it has worse 30 frames per second video frame rates, and they both have the same video quality, the Xiaomi Redmi Note 8 2021 also counts with a bigger aperture and a back camera with a much better resolution.
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