Compare phones
| Global Score | |
| 84.1 | 81.4 |
| Basic Information | |
| Samsung | Xiaomi |
| Android 11, 10 | Android 9.0 Pie |
| 2020-03-23 | 2019-04-15 |
| 6.26 x 2.96 x 0.35 inches | 5.81 x 2.78 x 0.29 inches |
| 6.63 ounces | 5.47 ounces |
| Midnight blue and Raven black | 16 777 216 |
| Plastic and Plastic | -- |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| Display / Screen | |
| 6.4 inches | 6 inches |
| 2340 x 1080 pixels | 2340 x 1080 pixels |
| Super AMOLED | AMOLED |
| 403 pixels per inch | 430 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 712 SDM712 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 2300 MHz) processor |
| 4 GB RAM | 6 GB RAM |
| Mali-G72 MP3 GPU | Adreno 616 GPU |
| 9.27 | 9.36 |
| Storage | |
| 64 GB internal memory | 128 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | No SD card slot |
| 11.74 | 10.1 |
| Camera | |
| 48.00 MP + 20.00 MP | 48.00 MP + 20.00 MP |
| f/2.00 aperture | f/1.80 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 |
| 1920 x 1080 (240 fps) (Full HD) slow motion video | 1280 x 720 (960 fps) (HD) slow motion video |
| 11.55 | 11.66 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | LTE-A (4G), LTE (4G), HSPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM, Dual SIM |
| 6.7 | 6.3 |
| Battery Life | |
| 6000mAh Li - Polymer Battery | 3070mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| 7.52 | 5.04 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| -- | NFC |
| -- | 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 Samsung Galaxy M21 has a score of 84.1, which is a bit better than Xiaomi Mi 9 SE's score of 81.4. Samsung Galaxy M21's construction is newer than Xiaomi Mi 9 SE's, although it is somewhat thicker and somewhat heavier. Both of these devices use Android OS, but the Samsung Galaxy M21 has older 11 version while Xiaomi Mi 9 SE has Android 9.0 Pie version.
Xiaomi Mi 9 SE has a little bit better looking screen than Galaxy M21, because although it has a little smaller screen, and they both have an equal resolution of 1080 x 2340px, the Xiaomi Mi 9 SE also counts with more screen brightness and a little greater count of pixels per inch in the display. The Samsung Galaxy M21 counts with a bigger storage for apps and games than Xiaomi Mi 9 SE, because although it has 0 less internal storage, it also counts with an external memory card slot that allows up to 512 GB.
Xiaomi Mi 9 SE counts with a little faster processing unit than Galaxy M21, and although they both have 8 cpu cores, the Xiaomi Mi 9 SE also has a greater amount of RAM. Xiaomi Mi 9 SE features just a bit better camera than Samsung Galaxy M21, and although they both have a same size camera sensor, the same video frame rates, the same 3840x2160 (4K) video quality and a same resolution back-facing camera, the Xiaomi Mi 9 SE also has a larger diafragm aperture for better photography in low-light environments.
Galaxy M21 counts with a really longer battery duration than Xiaomi Mi 9 SE, because it has a 6000mAh battery capacity.
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