Compare phones
| Global Score | |
| 76.1 | 79.2 |
| Basic Information | |
| Samsung | Xiaomi |
| Android 10 | Android 11, 10, 9.0 Pie |
| 2020-06-29 | 2019-07-24 |
| 6.61 x 3.02 x 0.32 inches | 6.04 x 2.83 x 0.33 inches |
| 6.81 ounces | 6.13 ounces |
| Black | Blue, Gray and White |
| Plastic and Plastic | Glass (Corning Gorilla Glass 5) and Plastic |
| -- | Scratch-Resistant Glass |
| $ 194.00 | -- |
| Display / Screen | |
| 6.5 inches | 6.1 inches |
| 1600 x 720 pixels | 1560 x 720 pixels |
| IPS LCD | Super AMOLED |
| 270 pixels per inch | 282 pixels per inch |
| No touch screen | No touch screen |
| 7.3 | 7.3 |
| Performance | |
| Mediatek Helio P35 chipset | Qualcomm Snapdragon 665 chipset |
| Arm Cortex-A53, 64-bit, 12 nm (Octa-Core 2300 MHz) processor | Kryo 260, 64-bit, 11 nm (Octa-Core 2000 MHz) processor |
| 3 GB RAM | 4 GB RAM |
| PowerVR GE8320 GPU | Adreno 610 GPU |
| 9.27 | 9.09 |
| Storage | |
| 32 GB internal memory | 128 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | microSDXC (up to 256 GB) external memory slot |
| 9.84 | 13.18 |
| Camera | |
| 16.00 MP + 13.00 MP | 48.00 MP + 32.00 MP |
| f/1.80 aperture | f/1.80 aperture |
| 0.33 inches (1/3.06") sensor | 0.43 inches (1/2.3") sensor |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| -- | 1280 x 720 (240 fps) (HD) slow motion video |
| 9.35 | 11.44 |
| 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 |
| 6.7 | 6.7 |
| Battery Life | |
| 4000mAh Li - Polymer Battery | 4030mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.92 | 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 Xiaomi Mi A3 is a bit better than Galaxy A21, having a general score of 79.2 against 76.1. Even though the Xiaomi Mi A3 is older and a bit thicker than Galaxy A21, it's body is still a bit lighter. Both of these devices include Android OS (Operating System), but the Xiaomi Mi A3 has a newer 11 version and Galaxy A21 has Android 10.
Xiaomi Mi A3 and Samsung Galaxy A21 feature quite similar screens, because although the Xiaomi Mi A3 has a little bit smaller display and a little bit worse 720 x 1560 pixels resolution, it also counts with a little bit better count of pixels in each inch in the display. Xiaomi Mi A3 counts with a much bigger storage for games and applications than Samsung Galaxy A21, because although it has a slot for an SD memory card that allows a maximum of 256 GB against 512 GB, it also counts with more internal storage capacity.
Galaxy A21 features a bit superior processing unit than Xiaomi Mi A3, although it has 1 GB less RAM memory, they both have a Octa-Core CPU. Xiaomi Mi A3 takes much better photos and videos than Galaxy A21, and although they both have the same aperture, the Xiaomi Mi A3 also has a much bigger sensor capturing more light and vivid colors, a much higher resolution camera in the back and a much higher (4K) video definition.
Xiaomi Mi A3's battery duration is very similar to Samsung Galaxy A21's battery performance, although the Xiaomi Mi A3 also has 4030mAh of battery capacity.
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