Compare phones
| Global Score | |
| 91.8 | 83.3 |
| Basic Information | |
| Samsung | Xiaomi |
| Android 11 | Android 10, 9.0 Pie, 8.0 Oreo |
| 2021-01-29 | 2018-06-05 |
| 5.97 x 2.80 x 0.31 inches | 6.10 x 2.94 x 0.30 inches |
| 6.03 ounces | 6.17 ounces |
| Gray, Phantom pink, Violet and White | Black, Blue, Gold and White |
| Aluminum and Plastic | Glass (Corning Gorilla Glass 5) |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 722.00 | -- |
| Display / Screen | |
| 6.2 inches | 6.2 inches |
| 2400 x 1080 pixels | 2248 x 1080 pixels |
| Dynamic AMOLED | AMOLED |
| 424 pixels per inch | 402 pixels per inch |
| 1300 cd/m2 brightness | 600 cd/m2 brightness |
| No touch screen | No touch screen |
| 9.2 | 8.6 |
| Performance | |
| Qualcomm Snapdragon 888 chipset | Qualcomm Snapdragon 845 SDM845 chipset |
| Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor | Kryo 385, 64-bit, 10 nm (Octa-Core 2800 MHz) processor |
| 8 GB RAM | 6 GB RAM |
| Adreno 660 GPU | Adreno 630 GPU |
| 9.63 | 9.63 |
| Storage | |
| 128 GB internal memory | 256 GB internal memory |
| No SD card slot | No SD card slot |
| 10.1 | 13.3 |
| Camera | |
| 12.00 MP + 10.00 MP | 12.00 MP + 20.00 MP |
| f/1.80 aperture | f/1.80 aperture |
| 26.00mm focal length | 56.00mm focal length |
| 0.57 inches (1/1.76") sensor | 0.39 inches (1/2.55") sensor |
| 7680 x 4320 (24 fps) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 1280 x 720 (960 fps) (HD) slow motion video | 1280 x 720 (960 fps) (HD) slow motion video |
| 10.78 | 9.9 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM | Nano SIM, Dual SIM |
| 10.7 | 6.7 |
| Battery Life | |
| 4000mAh Li - Polymer Battery | 3400mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 5.92 | 5.36 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | -- |
Comparison review
Galaxy S21 is much better than Xiaomi Mi 8, with a 91.8 score against 83.3. The Galaxy S21 is a extremely newer and a little bit lighter phone than the Xiaomi Mi 8, although it is also just a little bit thicker. These phones have Android OS, but Galaxy S21 has a more recent 11 version and Xiaomi Mi 8 has Android 10.
Galaxy S21 counts with a bit better screen than Xiaomi Mi 8, and although they both have a same size display, the Galaxy S21 also has a little higher pixels density, a much brighter display and a quite better resolution of 1080 x 2400px. Xiaomi Mi 8 counts with a processor that is just as good as Galaxy S21's processor, and although the Xiaomi Mi 8 has 2 GB less RAM, they both have 8 cpu cores.
Galaxy S21 captures just a bit better photos and videos than Xiaomi Mi 8, and although they both have the same resolution back-facing camera and a F1.8 aperture, the Galaxy S21 also has a much higher 7680x4320 video definition and a way larger camera sensor shooting much better quality videos and pictures.
Xiaomi Mi 8 counts with a superior memory for games and applications than Galaxy S21, because it has 256 GB internal memory. The Samsung Galaxy S21 has longer battery lifetime than Xiaomi Mi 8, because it has a 4000mAh battery capacity instead of 3400mAh.
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