Compare phones
| Global Score | |
| 75.3 | 76.1 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 8.1 Oreo, 7.1 Nougat | Android 10 |
| 2017-09-12 | 2020-06-29 |
| 6.01 x 2.91 x 0.30 inches | 6.61 x 3.02 x 0.32 inches |
| 5.75 ounces | 6.81 ounces |
| Black and Blue | Black |
| Aluminum and Glass | Plastic and Plastic |
| $ 444.00 | $ 194.00 |
| Display / Screen | |
| 5.5 inches | 6.5 inches |
| 1920 x 1080 pixels (Full HD) | 1600 x 720 pixels |
| IPS LCD | IPS LCD |
| 401 pixels per inch | 270 pixels per inch |
| 550 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 8.5 | 7.3 |
| Performance | |
| Qualcomm Snapdragon 660 chipset | Mediatek Helio P35 chipset |
| Kryo 260, 64-bit, 14 nm (Octa-Core 2200 MHz) processor | Arm Cortex-A53, 64-bit, 12 nm (Octa-Core 2300 MHz) processor |
| 6 GB RAM | 3 GB RAM |
| Adreno 512 GPU | PowerVR GE8320 GPU |
| 9.27 | 9.27 |
| Storage | |
| 128 GB internal memory | 32 GB internal memory |
| No SD card slot | microSDXC (up to 512 GB) external memory slot |
| 10.1 | 9.84 |
| Camera | |
| 12.00 MP + 16.00 MP | 16.00 MP + 13.00 MP |
| f/1.80 aperture | f/1.80 aperture |
| 27.00mm focal length | -- |
| -- | 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 | -- |
| 9.57 | 9.35 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| -- | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM |
| 3 | 6.7 |
| Battery Life | |
| 3500mAh Li - Ion Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.44 | 5.92 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | NFC |
| Infra-red port | -- |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| -- | FM Radio |
Comparison review
The Samsung Galaxy A21 is slightly better than the Xiaomi Mi Note 3, having a 76.1 score against 75.3. Both phones in our current comparison come with Android OS, but Samsung Galaxy A21 has the older 10 version while Xiaomi Mi Note 3 has Android 8.1 Oreo. The Samsung Galaxy A21 is a extremely newer cellphone than the Xiaomi Mi Note 3, although it's somewhat heavier and a bit thicker.
Xiaomi Mi Note 3 counts with a more vivid screen than Galaxy A21, because although it has a little smaller display, it also counts with a better 1080 x 1920 resolution and a better display pixels density. The Galaxy A21 counts with a processing unit that is very similar to Xiaomi Mi Note 3's processing unit, and although the Galaxy A21 has 3 GB less RAM, they both have 8 CPU cores.
The Xiaomi Mi Note 3 has a bit more storage for games and applications than Galaxy A21, because although it has no external memory card slot, it also counts with 128 GB internal storage capacity. Galaxy A21 has a bit superior battery performance than Xiaomi Mi Note 3, because it has a 4000mAh battery capacity instead of 3500mAh.
The Xiaomi Mi Note 3 takes slightly better photos and videos than Galaxy A21, because although it has a much less mega pixels resolution camera, and they both have a same size aperture, the Xiaomi Mi Note 3 also counts with a much higher 3840x2160 (4K) video definition.
Galaxy A21 is not only the best phones of the ones in this comparison, but it's also by far the cheapest.
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