Compare phones
| Global Score | |
| 84.1 | 75.9 |
| Basic Information | |
| Samsung | Xiaomi |
| Android 11, 10 | Android |
| 2020-03-23 | 2018-06-08 |
| 6.26 x 2.96 x 0.35 inches | 5.80 x 2.88 x 0.30 inches |
| 6.63 ounces | 5.78 ounces |
| Midnight blue and Raven black | Black, Blue, Gold and Red |
| Plastic and Plastic | -- |
| Scratch-Resistant Glass | -- |
| Display / Screen | |
| 6.4 inches | 5.9 inches |
| 2340 x 1080 pixels | 2244 x 1080 pixels |
| Super AMOLED | AMOLED |
| 403 pixels per inch | 422 pixels per inch |
| 420 cd/m2 brightness | 600 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.4 | 8.7 |
| Performance | |
| Exynos 9611 chipset | Qualcomm Snapdragon 710 SDM710 chipset |
| Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor | Kryo 360, 64-bit, 10 nm (Octa-Core 2200 MHz) processor |
| 4 GB RAM | 6 GB RAM |
| Mali-G72 MP3 GPU | Adreno 616 GPU |
| 9.27 | 9.27 |
| Storage | |
| 64 GB internal memory | 64 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | No SD card slot |
| 11.74 | 7.7 |
| Camera | |
| 48.00 MP + 20.00 MP | 12.00 MP + 20.00 MP |
| f/2.00 aperture | f/1.90 aperture |
| 26.00mm focal length | -- |
| 0.5 inches (1/2") sensor | 0.39 inches (1/2.55") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 1920 x 1080 (240 fps) (Full HD) slow motion video | 1280 x 720 (240 fps) (HD) slow motion video |
| 11.55 | 9.79 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | LTE (4G), HSPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM, Dual SIM |
| 6.7 | 6.1 |
| Battery Life | |
| 6000mAh Li - Polymer Battery | 3120mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 7.52 | 5.12 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| -- | Infra-red port |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Gyroscope and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | -- |
Comparison review
The Galaxy M21 is much better than the Xiaomi Mi 8 SE, getting a general score of 84.1 against 75.9. Galaxy M21 has Android 11 OS, while Xiaomi Mi 8 SE works with Android OS. Galaxy M21 is a newer cellphone than the Xiaomi Mi 8 SE, although it is heavier and thicker. The Xiaomi Mi 8 SE has a bit more vivid display than Galaxy M21, because although it has a little lower resolution of 1080 x 2244 pixels and a quite smaller display, it also counts with a just a bit better display density and more screen brightness.
Samsung Galaxy M21 counts with a way bigger memory to install applications and games than Xiaomi Mi 8 SE, and although they both have the same 64 GB internal memory, the Samsung Galaxy M21 also has an external memory card slot that holds up to 512 GB. Xiaomi Mi 8 SE and Galaxy M21 count with similar processors, and although the Xiaomi Mi 8 SE has 2 GB more RAM memory, they both have a Octa-Core processor.
The Galaxy M21 shoots much clearer pictures and videos than Xiaomi Mi 8 SE, because although it has a smaller camera aperture which is not good for low-light photography, and they both have the same (4K) video definition and the same video frame rate, the Galaxy M21 also counts with a lot larger sensor taking more light and vivid colors and a way more megapixels camera.
The Samsung Galaxy M21 has a much longer battery life than Xiaomi Mi 8 SE, because it has a 92 percent bigger battery capacity.
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