Compare phones
| Global Score | |
| 75.3 | 77.7 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 8.1 Oreo, 7.1 Nougat | Android 10 |
| 2017-09-12 | 2020-06-19 |
| 6.01 x 2.91 x 0.30 inches | 6.44 x 2.96 x 0.35 inches |
| 5.75 ounces | 6.77 ounces |
| Black and Blue | Black, Blue, Red and White |
| Aluminum and Glass | -- |
| $ 444.00 | -- |
| Display / Screen | |
| 5.5 inches | 6.5 inches |
| 1920 x 1080 pixels (Full HD) | 1600 x 720 pixels |
| IPS LCD | TFT |
| 401 pixels per inch | 270 pixels per inch |
| 550 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 8.5 | 7.2 |
| Performance | |
| Qualcomm Snapdragon 660 chipset | Samsung Exynos 850 chipset |
| Kryo 260, 64-bit, 14 nm (Octa-Core 2200 MHz) processor | Arm Cortex-A55, 64-bit (Octa-Core 2000 MHz) processor |
| 6 GB RAM | 3 GB RAM |
| Adreno 512 GPU | Mali-G76 GPU |
| 9.27 | 9.09 |
| 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 | 48.00 MP + 13.00 MP |
| f/1.80 aperture | f/2.00 aperture |
| 27.00mm focal length | 26.00mm focal length |
| -- | 0.5 inches (1/2") 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 | 10.78 |
| 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, Dual SIM |
| 3 | 6.7 |
| Battery Life | |
| 3500mAh Li - Ion Battery | 5000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.44 | 6.8 |
| 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, Gyroscope and Proximity Sensor |
Comparison review
The Galaxy A21s is a bit better than the Xiaomi Mi Note 3, with a 77.7 score against 75.3. The Galaxy A21s body is way newer than the Xiaomi Mi Note 3's, although it's somewhat heavier and thicker. Both of these devices use Android OS, but Galaxy A21s has older 10 version and Xiaomi Mi Note 3 has Android 8.1 Oreo version.
Xiaomi Mi Note 3 counts with a little bit better hardware performance than Galaxy A21s, and although they both have the same number of cores, the Xiaomi Mi Note 3 also has a greater amount of RAM memory. The Xiaomi Mi Note 3 counts with a much better display than Samsung Galaxy A21s, because although it has a little smaller screen, it also counts with a better 1080 x 1920 pixels resolution and a higher display density.
Samsung Galaxy A21s captures much better photos and videos than Xiaomi Mi Note 3, because although it has a tinier camera aperture which is worse for capturing images in low-light situations, and they both have the same 30 fps video frame rates and the same (Full HD) video definition, the Samsung Galaxy A21s also counts with a back-facing camera with lot more MP.
Xiaomi Mi Note 3 features just a bit bigger storage capacity to install applications and games than Galaxy A21s, because although it has no SD card slot, it also counts with 128 GB internal memory. Samsung Galaxy A21s has a very superior battery lifetime than Xiaomi Mi Note 3, because it has a 5000mAh battery size.
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