Compare phones
| Global Score | |
| 74.9 | 84.1 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 8.1 Oreo | Android 11, 10 |
| 2018-07-19 | 2020-03-23 |
| 6.94 x 3.44 x 0.31 inches | 6.26 x 2.96 x 0.35 inches |
| 7.80 ounces | 6.63 ounces |
| 16 777 216 | Midnight blue and Raven black |
| Aluminum | Plastic and Plastic |
| -- | Scratch-Resistant Glass |
| Display / Screen | |
| 6.9 inches | 6.4 inches |
| 2160 x 1080 pixels | 2340 x 1080 pixels |
| IPS LCD | Super AMOLED |
| 350 pixels per inch | 403 pixels per inch |
| -- | 420 cd/m2 brightness |
| No touch screen | No touch screen |
| 7.7 | 8.4 |
| Performance | |
| Qualcomm Snapdragon 636 SDM636 chipset | Exynos 9611 chipset |
| Kryo 260, 64-bit, 14 nm (Octa-Core 1800 MHz) processor | Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 4 GB RAM | 4 GB RAM |
| Adreno 509 GPU | Mali-G72 MP3 GPU |
| 8.91 | 9.27 |
| Storage | |
| 64 GB internal memory | 64 GB internal memory |
| microSDXC (up to 256 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 10.78 | 11.74 |
| Camera | |
| 12.00 MP + 8.00 MP | 48.00 MP + 20.00 MP |
| f/1.90 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 (30 fps) (4K) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 1280 x 720 (120 fps) (HD) slow motion video | 1920 x 1080 (240 fps) (Full HD) slow motion video |
| 9.68 | 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 | Nano SIM, Dual SIM |
| 6.3 | 6.7 |
| Battery Life | |
| 5500mAh Li - Polymer Battery | 6000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 7.2 | 7.52 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| Infra-red port | -- |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Gyroscope and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
The Galaxy M21 is better than Xiaomi Mi Max 3, with a general score of 84.1 against 74.9. Both devices in our current comparison work with Android OS (operating system), but Galaxy M21 has the previous 11 version and Xiaomi Mi Max 3 has Android 8.1 Oreo version. The Galaxy M21 is a newer and lighter phone than Xiaomi Mi Max 3, although it is also somewhat thicker.
Galaxy M21 features a bit better processor than Xiaomi Mi Max 3. Both have a Octa-Core processing unit and the same RAM memory amount. The Samsung Galaxy M21 counts with a little bit better looking screen than Xiaomi Mi Max 3, because although it has a little smaller screen, it also counts with a little better pixel density and a bit higher resolution of 1080 x 2340 pixels.
The Galaxy M21 has just a bit more memory capacity to install games and applications than Xiaomi Mi Max 3, and although they both have exactly the same 64 GB internal storage, the Galaxy M21 also has a SD card slot that admits a maximum of 512 GB. Samsung Galaxy M21 has just a bit better battery lifetime than Xiaomi Mi Max 3, because it has 6000mAh of battery capacity.
The Samsung Galaxy M21 features a superior camera than Xiaomi Mi Max 3, because although it has a tinier aperture which is worse for low-light photos and videos, and they both have the same 30 fps video frame rate and the same (4K) video resolution, the Samsung Galaxy M21 also counts with a lot better 48 MP resolution back-facing camera and a way larger back camera sensor.
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