Compare phones
| Global Score | |
| 74.9 | 76.1 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 8.1 Oreo | Android 10 |
| 2018-07-19 | 2020-06-29 |
| 6.94 x 3.44 x 0.31 inches | 6.61 x 3.02 x 0.32 inches |
| 7.80 ounces | 6.81 ounces |
| 16 777 216 | Black |
| Aluminum | Plastic and Plastic |
| -- | $ 194.00 |
| Display / Screen | |
| 6.9 inches | 6.5 inches |
| 2160 x 1080 pixels | 1600 x 720 pixels |
| IPS LCD | IPS LCD |
| 350 pixels per inch | 270 pixels per inch |
| No touch screen | No touch screen |
| 7.7 | 7.3 |
| Performance | |
| Qualcomm Snapdragon 636 SDM636 chipset | Mediatek Helio P35 chipset |
| Kryo 260, 64-bit, 14 nm (Octa-Core 1800 MHz) processor | Arm Cortex-A53, 64-bit, 12 nm (Octa-Core 2300 MHz) processor |
| 4 GB RAM | 3 GB RAM |
| Adreno 509 GPU | PowerVR GE8320 GPU |
| 8.91 | 9.27 |
| Storage | |
| 64 GB internal memory | 32 GB internal memory |
| microSDXC (up to 256 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 10.78 | 9.84 |
| Camera | |
| 12.00 MP + 8.00 MP | 16.00 MP + 13.00 MP |
| f/1.90 aperture | f/1.80 aperture |
| 0.39 inches (1/2.55") sensor | 0.33 inches (1/3.06") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 1280 x 720 (120 fps) (HD) slow motion video | -- |
| 9.68 | 9.35 |
| 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 |
| 6.3 | 6.7 |
| Battery Life | |
| 5500mAh Li - Polymer Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 7.2 | 5.92 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| -- | NFC |
| Infra-red port | -- |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
The Galaxy A21 has a score of 76.1, which is a bit better than Xiaomi Mi Max 3's global score of 74.9. Galaxy A21's design is newer and lighter than the Xiaomi Mi Max 3's, but it is also a little thicker. These phones come with Android OS (Operating System), but Galaxy A21 has the older 10 version and Xiaomi Mi Max 3 has Android 8.1 Oreo version.
The Galaxy A21 has a bit better CPU than Xiaomi Mi Max 3, although it has a lower amount of RAM memory, they both have a Octa-Core processing unit. Xiaomi Mi Max 3 counts with a slightly better screen than Samsung Galaxy A21, because it has a lot better 1080 x 2160 pixels resolution, a greater pixel density and a little bigger display.
The Xiaomi Mi Max 3 takes a little bit better videos and photos than Samsung Galaxy A21, because although it has a tinier aperture which is not good for low light images and a back-facing camera with a much lower resolution, it also counts with a much higher video definition and a bigger back-facing camera sensor capturing more light and vivid colors.
Xiaomi Mi Max 3 features a bit bigger storage for games and applications than Galaxy A21, because although it has a SD card slot that supports 256 GB smaller, it also counts with 32 GB more internal storage. The Xiaomi Mi Max 3 counts with a superior battery duration than Samsung Galaxy A21, because it has a 38 percent larger battery size.
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