Compare phones
| Global Score | |
| 74.6 | 91.8 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 10 | Android 11 |
| 2019-10-16 | 2021-01-29 |
| 6.23 x 2.96 x 0.33 inches | 5.97 x 2.80 x 0.31 inches |
| 6.70 ounces | 6.03 ounces |
| Cosmic Purple, Moonlight White, Nebula Purple, Neptune Blue and Space Black | Gray, Phantom pink, Violet and White |
| Glass and Plastic | Aluminum and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 227.00 | $ 722.00 |
| Display / Screen | |
| 6.3 inches | 6.2 inches |
| 2340 x 1080 pixels | 2400 x 1080 pixels |
| IPS LCD | Dynamic AMOLED |
| 409 pixels per inch | 424 pixels per inch |
| -- | 1300 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.1 | 9.2 |
| Performance | |
| Qualcomm Snapdragon 665 SM6125 chipset | Qualcomm Snapdragon 888 chipset |
| Kryo 260, 64-bit, 11 nm (Octa-Core 2000 MHz) processor | Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor |
| 3 GB RAM | 8 GB RAM |
| Adreno 610 GPU | Adreno 660 GPU |
| 9.09 | 9.63 |
| Storage | |
| 32 GB internal memory | 128 GB internal memory |
| microSDXC (up to 128 GB) external memory slot | No SD card slot |
| 8.12 | 10.1 |
| Camera | |
| 48.00 MP + 13.00 MP | 12.00 MP + 10.00 MP |
| f/1.80 aperture | f/1.80 aperture |
| -- | 26.00mm focal length |
| 0.5 inches (1/2") sensor | 0.57 inches (1/1.76") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 7680 x 4320 (24 fps) video resolution |
| 1280 x 720 (240 fps) (HD) slow motion video | 1280 x 720 (960 fps) (HD) slow motion video |
| 11.44 | 10.78 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G) and HSPA | 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM |
| 6.1 | 10.7 |
| Battery Life | |
| 4000mAh Li - Polymer Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 5.92 | 5.92 |
| Other Features | |
| Bluetooth 4.2 | Bluetooth 5.0 |
| GPS | GPS |
| -- | NFC |
| Infra-red port | -- |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| -- | FM Radio |
Comparison review
The Galaxy S21 is much better than Xiaomi Redmi Note 8, having a global score of 91.8 against 74.6. These devices come with Android OS, but Galaxy S21 has 11 version while Xiaomi Redmi Note 8 has Android 10 version. Galaxy S21's body is newer, lighter and just a little thinner than Xiaomi Redmi Note 8.
Samsung Galaxy S21 features a little bit better performance than Xiaomi Redmi Note 8, and although they both have a Octa-Core CPU, the Samsung Galaxy S21 also has 5 GB more RAM memory. The Galaxy S21 has a sharper display than Xiaomi Redmi Note 8, because although it has a bit smaller display, it also counts with a just a bit greater pixels density and a slightly better 1080 x 2400 resolution.
The Galaxy S21 has a very superior storage capacity to install applications and games than Xiaomi Redmi Note 8, because although it has no slot for external memory cards, it also counts with 96 GB more internal storage capacity. The Galaxy S21 features a battery life that's just as good as the battery performance in Xiaomi Redmi Note 8.
Xiaomi Redmi Note 8 counts with a slightly better camera than Galaxy S21, because although it has a tinier back camera sensor shooting worse quality videos and images, and they both have a same size aperture and the same 3840x2160 video quality, the Xiaomi Redmi Note 8 also counts with a back facing camera with lot more megapixels and better video frame rates.
The Galaxy S21 is way more expensive than Xiaomi Redmi Note 8, but it's still a good choice, as you can get a lot more features for that extra money.
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