Compare phones
| Global Score | |
| 83.8 | 84.1 |
| Basic Information | |
| Xiaomi | Samsung |
| -- | Android 11, 10 |
| 2018-11-01 | 2020-03-23 |
| 6.22 x 2.94 x 0.33 inches | 6.26 x 2.96 x 0.35 inches |
| 7.69 ounces | 6.63 ounces |
| Black, Blue and Green | Midnight blue and Raven black |
| Aluminum and Ceramic | Plastic and Plastic |
| -- | Scratch-Resistant Glass |
| Display / Screen | |
| 6.4 inches | 6.4 inches |
| 2340 x 1080 pixels | 2340 x 1080 pixels |
| Super AMOLED | Super AMOLED |
| 403 pixels per inch | 403 pixels per inch |
| 600 cd/m2 brightness | 420 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.6 | 8.4 |
| Performance | |
| Qualcomm Snapdragon 845 SDM845 chipset | Exynos 9611 chipset |
| Kryo 385, 64-bit, 10 nm (Octa-Core 2800 MHz) processor | Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 8 GB RAM | 4 GB RAM |
| Adreno 630 GPU | Mali-G72 MP3 GPU |
| 9.63 | 9.27 |
| Storage | |
| 256 GB internal memory | 64 GB internal memory |
| No SD card slot | microSDXC (up to 512 GB) external memory slot |
| 13.3 | 11.74 |
| Camera | |
| 12.20 MP + 24.00 MP | 48.00 MP + 20.00 MP |
| f/1.80 aperture | f/2.00 aperture |
| -- | 26.00mm focal length |
| 0.39 inches (1/2.55") sensor | 0.5 inches (1/2") sensor |
| 3840 x 2160 (60 fps) (4K) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 1920 x 1080 (960 fps) (Full HD) slow motion video | 1920 x 1080 (240 fps) (Full HD) slow motion video |
| 10.34 | 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 | |
| 3200mAh Li - Polymer Battery | 6000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 5.2 | 7.52 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | -- |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Gyroscope and Proximity Sensor |
| -- | FM Radio |
Comparison review
The Samsung Galaxy M21 has a general score of 84.1, which is just a bit better than the Xiaomi Mi Mix 3's overall score of 83.8. Although the Samsung Galaxy M21 is a little bit thicker than the Xiaomi Mi Mix 3, it's somewhat lighter and newer. The Xiaomi Mi Mix 3 has a little more vivid display than Galaxy M21, and although they both have a display with the same size, the same pixels density and an equal 1080 x 2340px resolution, the Xiaomi Mi Mix 3 also has more brightness.
Xiaomi Mi Mix 3 counts with more memory capacity to store more apps and games than Galaxy M21, because although it has no external SD slot, it also counts with 256 GB internal memory capacity. Xiaomi Mi Mix 3 has a bit better CPU than Galaxy M21, and although they both have 8 processing cores, the Xiaomi Mi Mix 3 also has a greater amount of RAM.
The Galaxy M21 takes much better pictures and videos than Xiaomi Mi Mix 3, because although it has slower 30 frames per second video frame rate and a smaller aperture which is not nice for low-light images and video, and they both have the same video quality, the Galaxy M21 also counts with a much larger camera sensor shooting lot better quality pictures and a way better resolution camera in the back.
Galaxy M21 features a way better battery duration than Xiaomi Mi Mix 3, because it has 6000mAh of battery capacity.
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