| Global Score | |
| 85.3 | 76.7 |
| Basic Information | |
| Microsoft | Xiaomi |
| Android 11 | Android 11 |
| 2021-09-20 | 2021-05-27 |
| 5.72 x 7.26 x 0.22 inches | 6.23 x 2.96 x 0.33 inches |
| 10.02 ounces | 6.70 ounces |
| Glacier and Obsidian | Moonlight White, Neptune Blue and Space Black, |
| Glass (Corning Gorilla Glass) | Glass and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 540.00 | -- |
| Display / Screen | |
| 8.3 inches | 6.3 inches |
| 2688 x 1892 pixels | 2340 x 1080 pixels |
| AMOLED | IPS LCD |
| 396 pixels per inch | 409 pixels per inch |
| 800 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 8.8 | 8.1 |
| Performance | |
| Qualcomm Snapdragon 888 SM8350 (5 nm) chipset | MediaTek Helio G85 MT6769Z chipset |
| Kryo 680, 64-bit (Octa-Core 2840 MHz) processor | Cortex-A75, 64-bit, 12 nm (Octa-Core 2000 MHz) processor |
| 8 GB RAM | 4 GB RAM |
| Adreno 660 GPU | Mali G52 MC2 GPU |
| 9.63 | 9.09 |
| Storage | |
| 128 GB internal memory | 64 GB internal memory |
| No SD card slot | microSDXC (up to 128 GB) external memory slot |
| 10.1 | 10.02 |
| Camera | |
| 12.00 MP + 12.00 MP | 48.00 MP + 13.00 MP |
| f/1.70 aperture | f/1.80 aperture |
| 27.00mm focal length | -- |
| -- | 0.5 inches (1/2") sensor |
| 3840 x 2160 (60 fps) (4K) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 1920 x 1080 (240 fps) (Full HD) slow motion video | 1280 x 720 (120 fps) (HD) slow motion video |
| 10.01 | 11 |
| 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 HSPA |
| Nano SIM, Dual SIM | Nano SIM |
| 10.6 | 6.6 |
| Battery Life | |
| 4449mAh Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 6.32 | 5.92 |
| Other Features | |
| Bluetooth 5.1 | Bluetooth 5.2 |
| 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 |
The Microsoft Surface Duo 2 is better than the Xiaomi Redmi Note 8 2021, having a general score of 85.3 against 76.7. Although Microsoft Surface Duo 2 and the Xiaomi Redmi Note 8 2021 were released only 4 months apart, Microsoft Surface Duo 2's design is extremely thinner but also a lot heavier. These phones include the same Android 11 OS (Operating System).
The Microsoft Surface Duo 2 counts with a little better hardware performance than Xiaomi Redmi Note 8 2021, and although they both have a Octa-Core processing unit, the Microsoft Surface Duo 2 also has 4 GB more RAM memory. Microsoft Surface Duo 2 features a bit better screen than Xiaomi Redmi Note 8 2021, because although it has a just a little worse count of pixels per inch of screen, it also counts with a lot higher resolution of 1892 x 2688px and a much larger screen.
Xiaomi Redmi Note 8 2021 features a bit better camera than Microsoft Surface Duo 2, because although it has a smaller aperture which is not nice for low-light captures and videos and worse video frame rates, and they both have the same (Full HD) video definition, the Xiaomi Redmi Note 8 2021 also counts with a much higher 48 mega pixels resolution camera in the back.
The Microsoft Surface Duo 2 counts with just a bit bigger storage capacity to install applications and games than Xiaomi Redmi Note 8 2021, because although it has no slot for SD memory cards, it also counts with 128 GB internal storage. Microsoft Surface Duo 2 counts with just a bit longer battery life than Xiaomi Redmi Note 8 2021, because it has 4449mAh of battery capacity.
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