Compare phones
| Global Score | |
| 81.4 | 91.8 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 9.0 Pie | Android 11 |
| 2019-04-15 | 2021-01-29 |
| 5.81 x 2.78 x 0.29 inches | 5.97 x 2.80 x 0.31 inches |
| 5.47 ounces | 6.03 ounces |
| 16 777 216 | Gray, Phantom pink, Violet and White |
| -- | Aluminum and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| -- | $ 722.00 |
| Display / Screen | |
| 6 inches | 6.2 inches |
| 2340 x 1080 pixels | 2400 x 1080 pixels |
| AMOLED | Dynamic AMOLED |
| 430 pixels per inch | 424 pixels per inch |
| 600 cd/m2 brightness | 1300 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.7 | 9.2 |
| Performance | |
| Qualcomm Snapdragon 712 SDM712 chipset | Qualcomm Snapdragon 888 chipset |
| Kryo 360, 64-bit, 10 nm (Octa-Core 2300 MHz) processor | Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor |
| 6 GB RAM | 8 GB RAM |
| Adreno 616 GPU | Adreno 660 GPU |
| 9.36 | 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 (30 fps) (4K) video resolution | 7680 x 4320 (24 fps) video resolution |
| 1280 x 720 (960 fps) (HD) slow motion video | 1280 x 720 (960 fps) (HD) slow motion video |
| 11.66 | 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 | |
| 3070mAh Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 5.04 | 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 Galaxy S21 is better than Xiaomi Mi 9 SE, having a 91.8 score against 81.4. Both of these devices use Android OS (Operating System), but Galaxy S21 has the previous 11 version while Xiaomi Mi 9 SE has Android 9.0 Pie. Although Galaxy S21 is newer than the Xiaomi Mi 9 SE, it's just a little thicker and a bit heavier.
The Samsung Galaxy S21 features a bit more powerful processor than Xiaomi Mi 9 SE, and although they both have 8 cores, the Samsung Galaxy S21 also has 2 GB more RAM memory. Galaxy S21 features just a bit better display than Xiaomi Mi 9 SE, because although it has a just a bit worse pixels amount in each inch of display, it also counts with a slightly better 1080 x 2400px resolution, a much brighter screen and a quite bigger screen.
The Galaxy S21 counts with as much memory capacity for games and applications as the Xiaomi Mi 9 SE, both have the same 128 GB internal memory. The Samsung Galaxy S21 has longer battery life than Xiaomi Mi 9 SE, because it has a 30 percent more battery capacity. The Xiaomi Mi 9 SE shoots a little bit better photographs and videos than Samsung Galaxy S21, because although it has a smaller camera sensor shooting lower quality photos, and they both have the same (4K) video quality and the same aperture, the Xiaomi Mi 9 SE also counts with a lot more MP camera and faster 30 frames per second video frame rates.
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