Compare phones
| Global Score | |
| 71.6 | 84.1 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 4.4.2, 4.2.1 | Android 11, 10 |
| 0000-00-00 | 2020-03-23 |
| 5.67 x 2.90 x 0.32 inches | 6.26 x 2.96 x 0.35 inches |
| 5.11 ounces | 6.63 ounces |
| Black | Midnight blue and Raven black |
| -- | Plastic and Plastic |
| -- | Scratch-Resistant Glass |
| $ 300.00 | -- |
| Display / Screen | |
| 5 inches | 6.4 inches |
| 1080 x 1920 pixels (Full HD) | 2340 x 1080 pixels |
| IPS LCD | Super AMOLED |
| 441 pixels per inch | 403 pixels per inch |
| -- | 420 cd/m2 brightness |
| Capacitive, Multi-touch | No touch screen |
| 9.1 | 8.4 |
| Performance | |
| Qualcomm Snapdragon 800 8974-AB chipset | Exynos 9611 chipset |
| Krait 400 (Quad-Core 2360 MHz) processor | Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 2 GB (933 MHz) RAM | 4 GB RAM |
| Adreno 330 (450 MHz) GPU | Mali-G72 MP3 GPU |
| 9.27 | 9.27 |
| Storage | |
| 64 GB internal memory | 64 GB internal memory |
| No SD card slot | microSDXC (up to 512 GB) external memory slot |
| 7.7 | 11.74 |
| Camera | |
| 13.00 MP + 2.00 MP | 48.00 MP + 20.00 MP |
| f/2.20 aperture | f/2.00 aperture |
| -- | 26.00mm focal length |
| -- | 0.5 inches (1/2") sensor |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| -- | 1920 x 1080 (240 fps) (Full HD) slow motion video |
| 8.91 | 11.55 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| HSPA+ (4G), HSDPA, HSUPA, UMTS, EDGE, GPRS and GSM | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| SIM | Nano SIM, Dual SIM |
| 4.6 | 6.7 |
| Battery Life | |
| 3050mAh Li-Ion Battery | 6000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.04 | 7.52 |
| Other Features | |
| Bluetooth 4.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | -- |
| -- | Fingerprint ID Scanner |
| Accelerometer, Compass, Light Sensor and Proximity Sensor | Accelerometer, Gyroscope and Proximity Sensor |
| -- | FM Radio |
Comparison review
Samsung Galaxy M21 has a score of 84.1, which is much better than the Xiaomi Mi-3's 71.6 score. Both of these phones work with Android operating system, but Samsung Galaxy M21 has 11 version while Xiaomi Mi-3 has Android 4.4.2 version. Even being the best in this comparison review, Samsung Galaxy M21 is a a little bit thicker and incredibly heavier cellphone than Xiaomi Mi-3.
Xiaomi Mi-3 counts with a little sharper display than Galaxy M21, because although it has a bit lower resolution of 1920 x 1080 and a much smaller screen, it also counts with a bit greater display pixels density. The Xiaomi Mi-3 and the Samsung Galaxy M21 both have quite similar processors, because although the Samsung Galaxy M21 has doesn't have a graphics processor, it also counts with a larger number of cores (although slower) and more RAM.
Samsung Galaxy M21 features a much better camera than Xiaomi Mi-3, because it has a way better resolution camera, a way better 3840x2160 video resolution and a larger diafragm aperture to take better low light photography and videos. The Galaxy M21 has a lot bigger memory to store more games and applications than Xiaomi Mi-3, and although they both have the same 64 GB internal memory, the Galaxy M21 also has a slot for an external memory card that admits up to 512 GB.
Samsung Galaxy M21 has a much longer battery lifetime than Xiaomi Mi-3, because it has 6000mAh of battery capacity against 3050mAh.
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