Compare phones
| Global Score | |
| 91.8 | 81.4 |
| Basic Information | |
| Samsung | Xiaomi |
| Android 11 | Android 9.0 Pie |
| 2021-01-29 | 2019-04-15 |
| 5.97 x 2.80 x 0.31 inches | 5.81 x 2.78 x 0.29 inches |
| 6.03 ounces | 5.47 ounces |
| Gray, Phantom pink, Violet and White | 16 777 216 |
| Aluminum and Plastic | -- |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 722.00 | -- |
| Display / Screen | |
| 6.2 inches | 6 inches |
| 2400 x 1080 pixels | 2340 x 1080 pixels |
| Dynamic AMOLED | AMOLED |
| 424 pixels per inch | 430 pixels per inch |
| 1300 cd/m2 brightness | 600 cd/m2 brightness |
| No touch screen | No touch screen |
| 9.2 | 8.7 |
| Performance | |
| Qualcomm Snapdragon 888 chipset | Qualcomm Snapdragon 712 SDM712 chipset |
| Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor | Kryo 360, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 8 GB RAM | 6 GB RAM |
| Adreno 660 GPU | Adreno 616 GPU |
| 9.63 | 9.36 |
| 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 (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 | 11.66 |
| 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 | 3070mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 5.92 | 5.04 |
| 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
Galaxy S21 is much better than Xiaomi Mi 9 SE, getting a global score of 91.8 against 81.4. Although Galaxy S21 is newer than the Xiaomi Mi 9 SE, it's just a little bit thicker and a little bit heavier. Both of these phones have Android OS, but the Galaxy S21 has 11 version and Xiaomi Mi 9 SE has Android 9.0 Pie.
Samsung Galaxy S21 has just a bit better hardware performance than Xiaomi Mi 9 SE, and although they both have a Octa-Core processor, the Samsung Galaxy S21 also has a greater amount of RAM. Samsung Galaxy S21 counts with a little more vivid display than Xiaomi Mi 9 SE, because although it has a just a little worse pixel density, it also counts with way more brightness, a slightly better resolution of 1080 x 2400px and a quite larger screen.
Xiaomi Mi 9 SE has a little bit better camera than Galaxy S21, because although it has a smaller back camera sensor shooting lower quality photos and videos, and they both have the same camera aperture and the same 3840x2160 video quality, the Xiaomi Mi 9 SE also counts with faster 30 fps video frame rates and a lot more MP back facing camera.
Xiaomi Mi 9 SE's storage for games and applications is just as good as the Galaxy S21 one, both of them have equal 128 GB internal memory. The Galaxy S21 counts with greater battery life than Xiaomi Mi 9 SE, because it has 4000mAh of battery capacity.
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