Compare phones
| Global Score | |
| 91.8 | 83.2 |
| Basic Information | |
| Samsung | Xiaomi |
| Android 11 | -- |
| 2021-01-29 | 2019-03-06 |
| 5.97 x 2.80 x 0.31 inches | 6.20 x 2.94 x 0.30 inches |
| 6.03 ounces | 6.10 ounces |
| Gray, Phantom pink, Violet and White | Black, Blue and Purple |
| Aluminum and Plastic | Glass (Corning Gorilla Glass 5) and Metal |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 722.00 | -- |
| Display / Screen | |
| 6.2 inches | 6.4 inches |
| 2400 x 1080 pixels | 2340 x 1080 pixels |
| Dynamic AMOLED | AMOLED |
| 424 pixels per inch | 403 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 855 chipset |
| Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor | Kryo 485, 64-bit, 7 nm (Octa-Core 2840 MHz) processor |
| 8 GB RAM | 6 GB RAM |
| Adreno 660 GPU | Adreno 640 GPU |
| 9.63 | 9.63 |
| Storage | |
| 128 GB internal memory | 128 GB internal memory |
| No SD card slot | No SD card slot |
| 10.1 | 10.1 |
| Camera | |
| 12.00 MP + 10.00 MP | 48.00 MP + 20.00 MP |
| f/1.80 aperture | f/1.80 aperture |
| 26.00mm focal length | 26.00mm focal length |
| 0.57 inches (1/1.76") sensor | 0.5 inches (1/2") sensor |
| 7680 x 4320 (24 fps) video resolution | 3840 x 2160 (60 fps) (4K) video resolution |
| 1280 x 720 (960 fps) (HD) slow motion video | 1920 x 1080 (960 fps) (Full HD) slow motion video |
| 10.78 | 12.1 |
| 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 and HSUPA |
| Nano SIM | Nano SIM, Dual SIM |
| 10.7 | 6.3 |
| Battery Life | |
| 4000mAh Li - Polymer Battery | 3300mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | Wireless Charging |
| 5.92 | 5.28 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | NFC |
| -- | Infra-red port |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | -- |
Comparison review
Samsung Galaxy S21 is better than the Xiaomi Mi 9, having a 91.8 score against 83.2. Samsung Galaxy S21 is a newer and a little lighter cellphone than Xiaomi Mi 9, but it's a little thicker. The Xiaomi Mi 9 counts with a CPU that is just as good as the CPU in Samsung Galaxy S21, and although the Xiaomi Mi 9 has lesser RAM, they both have 8 processing cores.
The Samsung Galaxy S21 has a little more vivid display than Xiaomi Mi 9, because although it has a little smaller display, it also counts with a lot brighter screen, a just a little better display pixel density and a little higher 1080 x 2400 resolution. Xiaomi Mi 9 takes much clearer pictures and videos than Galaxy S21, because although it has a smaller camera sensor which offers a worse image and video quality, and they both have the same camera aperture and the same (4K) video resolution, the Xiaomi Mi 9 also counts with a back camera with a lot better resolution and faster video frame rate.
Xiaomi Mi 9 counts with as much memory for games and applications as Samsung Galaxy S21, they have exactly the same internal storage. Samsung Galaxy S21 features improved battery lifetime than Xiaomi Mi 9, because it has a 4000mAh battery capacity against 3300mAh.
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