Compare phones
| Global Score | |
| 84.1 | 83.8 |
| Basic Information | |
| Samsung | Xiaomi |
| Android 11, 10 | -- |
| 2020-03-23 | 2018-11-01 |
| 6.26 x 2.96 x 0.35 inches | 6.22 x 2.94 x 0.33 inches |
| 6.63 ounces | 7.69 ounces |
| Midnight blue and Raven black | Black, Blue and Green |
| Plastic and Plastic | Aluminum and Ceramic |
| 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 |
| 420 cd/m2 brightness | 600 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.4 | 8.6 |
| Performance | |
| Exynos 9611 chipset | Qualcomm Snapdragon 845 SDM845 chipset |
| Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor | Kryo 385, 64-bit, 10 nm (Octa-Core 2800 MHz) processor |
| 4 GB RAM | 8 GB RAM |
| Mali-G72 MP3 GPU | Adreno 630 GPU |
| 9.27 | 9.63 |
| Storage | |
| 64 GB internal memory | 256 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | No SD card slot |
| 11.74 | 13.3 |
| Camera | |
| 48.00 MP + 20.00 MP | 12.20 MP + 24.00 MP |
| f/2.00 aperture | f/1.80 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 (60 fps) (4K) video resolution |
| 1920 x 1080 (240 fps) (Full HD) slow motion video | 1920 x 1080 (960 fps) (Full HD) slow motion video |
| 11.55 | 10.34 |
| 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 | 3200mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 7.52 | 5.2 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| -- | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Gyroscope and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | -- |
Comparison review
Samsung Galaxy M21 has a score of 84.1, which is just a bit better than the Xiaomi Mi Mix 3's 83.8 general score. The Samsung Galaxy M21 is a newer and somewhat lighter phone than the Xiaomi Mi Mix 3, but it is a little thicker. The Xiaomi Mi Mix 3 features a bit better performance than Samsung Galaxy M21, and although they both have 8 processing cores, the Xiaomi Mi Mix 3 also has more RAM memory.
Xiaomi Mi Mix 3 counts with just a bit better screen than Galaxy M21, and although they both have the same amount of pixels in each inch of display, an equal 1080 x 2340 resolution and a display of the same size, the Xiaomi Mi Mix 3 also has a brighter display. Samsung Galaxy M21 has a superior camera than Xiaomi Mi Mix 3, because although it has lower 30 frames per second video frame rates and a smaller aperture which is not so good for low-light photos, and they both have the same (4K) video definition, the Samsung Galaxy M21 also counts with a lot larger camera sensor taking more light and vivid colors and a back camera with a way better resolution.
The Xiaomi Mi Mix 3 counts with a bigger storage for apps and games than Galaxy M21, because although it has no SD memory card expansion slot, it also counts with more internal memory capacity. The Galaxy M21 counts with a superior battery lifetime than Xiaomi Mi Mix 3, because it has 6000mAh of battery capacity.
Disclaimer: As an Amazon Associate I earn from qualifying purchases.