Compare phones
| Global Score | |
| 79.2 | 77.7 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 11, 10, 9.0 Pie | Android 10 |
| 2019-07-24 | 2020-06-19 |
| 6.04 x 2.83 x 0.33 inches | 6.44 x 2.96 x 0.35 inches |
| 6.13 ounces | 6.77 ounces |
| Blue, Gray and White | Black, Blue, Red and White |
| Glass (Corning Gorilla Glass 5) and Plastic | -- |
| Scratch-Resistant Glass | -- |
| Display / Screen | |
| 6.1 inches | 6.5 inches |
| 1560 x 720 pixels | 1600 x 720 pixels |
| Super AMOLED | TFT |
| 282 pixels per inch | 270 pixels per inch |
| No touch screen | No touch screen |
| 7.3 | 7.2 |
| Performance | |
| Qualcomm Snapdragon 665 chipset | Samsung Exynos 850 chipset |
| Kryo 260, 64-bit, 11 nm (Octa-Core 2000 MHz) processor | Arm Cortex-A55, 64-bit (Octa-Core 2000 MHz) processor |
| 4 GB RAM | 3 GB RAM |
| Adreno 610 GPU | Mali-G76 GPU |
| 9.09 | 9.09 |
| Storage | |
| 128 GB internal memory | 32 GB internal memory |
| microSDXC (up to 256 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 13.18 | 9.84 |
| Camera | |
| 48.00 MP + 32.00 MP | 48.00 MP + 13.00 MP |
| f/1.80 aperture | f/2.00 aperture |
| -- | 26.00mm focal length |
| 0.43 inches (1/2.3") sensor | 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 (240 fps) (HD) slow motion video | -- |
| 11.44 | 10.78 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM | Nano SIM, Dual SIM |
| 6.7 | 6.7 |
| Battery Life | |
| 4030mAh Battery | 5000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.92 | 6.8 |
| 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, Gyroscope and Proximity Sensor |
| FM Radio | -- |
Comparison review
The Xiaomi Mi A3 is a little bit better than the Galaxy A21s, having a global score of 79.2 against 77.7. Even though Xiaomi Mi A3 is older than the Galaxy A21s, it's body is just a little bit lighter and a bit thinner. These devices work with Android OS (Operating System), but Xiaomi Mi A3 has a newer 11 version and Galaxy A21s has Android 10, so it provides lots of additional features.
Samsung Galaxy A21s features a processor that is just as good as the CPU in Xiaomi Mi A3, and although the Samsung Galaxy A21s has 1 GB less RAM, they both have the same number of cores. The Xiaomi Mi A3 counts with a bit sharper display than Samsung Galaxy A21s, because although it has a quite lower resolution of 720 x 1560 pixels and a bit smaller screen, it also counts with a just a bit more pixels per inch of display.
Xiaomi Mi A3 shoots clearer photographs and videos than Samsung Galaxy A21s, because although it has a smaller sensor shooting worse quality pictures, and they both have a back camera with a 48 megapixels resolution, the Xiaomi Mi A3 also counts with a way better video definition and a larger diafragm aperture to capture better captures in low-light environments.
Xiaomi Mi A3 counts with a lot bigger storage capacity for applications, games, photos and videos than Galaxy A21s, because although it has a SD extension slot that holds up to 256 GB against 512 GB, it also counts with 96 GB more internal memory. The Samsung Galaxy A21s counts with better battery duration than Xiaomi Mi A3, because it has a 5000mAh battery capacity.
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