Compare phones
| Global Score | |
| 81.4 | 84.1 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 9.0 Pie | Android 11, 10 |
| 2019-04-15 | 2020-03-23 |
| 5.81 x 2.78 x 0.29 inches | 6.26 x 2.96 x 0.35 inches |
| 5.47 ounces | 6.63 ounces |
| 16 777 216 | Midnight blue and Raven black |
| -- | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| Display / Screen | |
| 6 inches | 6.4 inches |
| 2340 x 1080 pixels | 2340 x 1080 pixels |
| AMOLED | Super AMOLED |
| 430 pixels per inch | 403 pixels per inch |
| 600 cd/m2 brightness | 420 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.7 | 8.4 |
| Performance | |
| Qualcomm Snapdragon 712 SDM712 chipset | Exynos 9611 chipset |
| Kryo 360, 64-bit, 10 nm (Octa-Core 2300 MHz) processor | Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 6 GB RAM | 4 GB RAM |
| Adreno 616 GPU | Mali-G72 MP3 GPU |
| 9.36 | 9.27 |
| Storage | |
| 128 GB internal memory | 64 GB internal memory |
| No SD card slot | microSDXC (up to 512 GB) external memory slot |
| 10.1 | 11.74 |
| Camera | |
| 48.00 MP + 20.00 MP | 48.00 MP + 20.00 MP |
| f/1.80 aperture | f/2.00 aperture |
| 26.00mm focal length | 26.00mm focal length |
| 0.5 inches (1/2") sensor | 0.5 inches (1/2") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 1280 x 720 (960 fps) (HD) slow motion video | 1920 x 1080 (240 fps) (Full HD) slow motion video |
| 11.66 | 11.55 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA and HSUPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM, Dual SIM |
| 6.3 | 6.7 |
| Battery Life | |
| 3070mAh Battery | 6000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.04 | 7.52 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | -- |
| Infra-red port | -- |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Gyroscope and Proximity Sensor |
| -- | FM Radio |
Comparison review
Galaxy M21 is a little bit better than Xiaomi Mi 9 SE, with an 84.1 score against 81.4. Even though Galaxy M21 is newer than Xiaomi Mi 9 SE, it's heavier and thicker. Both phones in this comparison review have Android OS (operating system), but Galaxy M21 has 11 version and Xiaomi Mi 9 SE has Android 9.0 Pie version.
The Xiaomi Mi 9 SE has a bit better CPU than Galaxy M21, and although they both have a Octa-Core processing unit, the Xiaomi Mi 9 SE also has a larger amount of RAM memory. Xiaomi Mi 9 SE counts with just a bit better looking display than Samsung Galaxy M21, because although it has a little smaller display, and they both have the same exact 1080 x 2340px resolution, the Xiaomi Mi 9 SE also counts with a just a bit higher display density and a brighter screen.
Xiaomi Mi 9 SE counts with just a bit better camera than Galaxy M21, and although they both have the same video frame rate, a 0.5 inches sensor, the same resolution back facing camera and the same 3840x2160 (4K) video resolution, the Xiaomi Mi 9 SE also has a larger diafragm aperture. Galaxy M21 features a bigger memory capacity for games and applications than Xiaomi Mi 9 SE, because although it has less internal memory, it also counts with a SD memory slot that supports up to 512 GB.
Galaxy M21 has a much longer battery performance than Xiaomi Mi 9 SE, because it has a 95 percent larger battery size.
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