Compare phones
| Global Score | |
| 83.2 | 91.8 |
| Basic Information | |
| Xiaomi | Samsung |
| -- | Android 11 |
| 2019-03-06 | 2021-01-29 |
| 6.20 x 2.94 x 0.30 inches | 5.97 x 2.80 x 0.31 inches |
| 6.10 ounces | 6.03 ounces |
| Black, Blue and Purple | Gray, Phantom pink, Violet and White |
| Glass (Corning Gorilla Glass 5) and Metal | Aluminum and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| -- | $ 722.00 |
| Display / Screen | |
| 6.4 inches | 6.2 inches |
| 2340 x 1080 pixels | 2400 x 1080 pixels |
| AMOLED | Dynamic AMOLED |
| 403 pixels per inch | 424 pixels per inch |
| 600 cd/m2 brightness | 1300 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.6 | 9.2 |
| Performance | |
| Qualcomm Snapdragon 855 chipset | Qualcomm Snapdragon 888 chipset |
| Kryo 485, 64-bit, 7 nm (Octa-Core 2840 MHz) processor | Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor |
| 6 GB RAM | 8 GB RAM |
| Adreno 640 GPU | Adreno 660 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 | |
| 48.00 MP + 20.00 MP | 12.00 MP + 10.00 MP |
| f/1.80 aperture | f/1.80 aperture |
| 26.00mm focal length | 26.00mm focal length |
| 0.5 inches (1/2") sensor | 0.57 inches (1/1.76") sensor |
| 3840 x 2160 (60 fps) (4K) video resolution | 7680 x 4320 (24 fps) video resolution |
| 1920 x 1080 (960 fps) (Full HD) slow motion video | 1280 x 720 (960 fps) (HD) slow motion video |
| 12.1 | 10.78 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA and HSUPA | 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM |
| 6.3 | 10.7 |
| Battery Life | |
| 3300mAh Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | Wireless Charging |
| 5.28 | 5.92 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | 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 Samsung Galaxy S21 is better than the Xiaomi Mi 9, having a score of 91.8 against 83.2. Samsung Galaxy S21 is a newer and a little lighter cellphone than Xiaomi Mi 9, although it is also a little bit thicker. Galaxy S21 counts with a slightly better looking screen than Xiaomi Mi 9, because although it has a bit smaller screen, it also counts with a really brighter display, a bit better number of pixels in each inch in the screen and a slightly better 1080 x 2400 resolution.
The Galaxy S21 and Xiaomi Mi 9 feature incredibly similar processors, and although the Galaxy S21 has a higher amount of RAM, they both have 8 cpu cores. Xiaomi Mi 9 counts with a superior camera than Galaxy S21, because although it has a tinier camera sensor giving a worse image quality, and they both have the same aperture and the same 3840x2160 (4K) video quality, the Xiaomi Mi 9 also counts with a back facing camera with much more MP and faster 60 fps video frame rates.
Samsung Galaxy S21 counts with as much storage capacity to store more games and applications as the Xiaomi Mi 9 one, both have exactly the same internal storage capacity. Galaxy S21 has superior battery lifetime than Xiaomi Mi 9, because it has 4000mAh of battery capacity.
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