| Global Score | |
| 79.2 | 87.4 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 11, 10, 9.0 Pie | Android 5.0 |
| 2019-07-24 | 2015-04-11 |
| 6.04 x 2.83 x 0.33 inches | 5.65 x 2.78 x 0.27 inches |
| 6.13 ounces | 4.87 ounces |
| Blue, Gray and White | Black, Blue, Gold and White |
| Glass (Corning Gorilla Glass 5) and Plastic | Aluminium and Glass |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| -- | $ 252.00 |
| Display / Screen | |
| 6.1 inches | 5.1 inches |
| 1560 x 720 pixels | 1440 x 2560 pixels (Quad HD / 2K) |
| Super AMOLED | Super AMOLED |
| 282 pixels per inch | 576 pixels per inch |
| No touch screen | Capacitive, Multi-touch |
| 7.3 | 9.9 |
| Performance | |
| Qualcomm Snapdragon 665 chipset | Exynos 7 Octa 7420 chipset |
| Kryo 260, 64-bit, 11 nm (Octa-Core 2000 MHz) processor | 64-bit ARM Cortex-A57 (Quad-Core 2100 MHz + Quad-Core 1500 MHz) processor |
| 4 GB RAM | 3 GB (1600 MHz) RAM |
| Adreno 610 GPU | Mali-T760 MP8 (650 MHz) GPU |
| 9.09 | 10.08 |
| Storage | |
| 128 GB internal memory | 128 GB internal memory |
| microSDXC (up to 256 GB) external memory slot | No SD card slot |
| 13.18 | 10.1 |
| Camera | |
| 48.00 MP + 32.00 MP | 16.00 MP + 5.00 MP |
| f/1.80 aperture | f/1.90 aperture |
| -- | 28.00mm focal length |
| 0.43 inches (1/2.3") sensor | 0.38 inches (1/2.6") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 1280 x 720 (240 fps) (HD) slow motion video | -- |
| 11.44 | 10.01 |
| 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, HSUPA, UMTS, EDGE, GPRS and GSM |
| Nano SIM | Nano SIM, Dual SIM |
| 6.7 | 6.7 |
| Battery Life | |
| 4030mAh Battery | 2550mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 5.92 | 4.56 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 4.1 |
| GPS | GPS |
| -- | NFC |
| Infra-red port | Infra-red port |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | -- |
Galaxy S6 has an overall score of 87.4, which is better than the Xiaomi Mi A3's 79.2 score. Despite of the fact that Galaxy S6 is much older than Xiaomi Mi A3, it's design is somewhat thinner and much lighter. These devices use Android operating system, but the Galaxy S6 has 5.0 version and Xiaomi Mi A3 has Android 11 version.
Samsung Galaxy S6 counts with a better hardware performance than Xiaomi Mi A3, because although it has less RAM memory, and they both have a Octa-Core CPU, the Samsung Galaxy S6 also counts with an extra graphics processor and a 64 bits CPU. The Galaxy S6 features a much more vibrant display than Xiaomi Mi A3, because although it has a little smaller display, it also counts with a lot higher 2560 x 1440 pixels resolution and a much better screen pixels density.
Xiaomi Mi A3 takes better pictures and videos than Galaxy S6, and although they both have the same 30 fps video frame rate and the same (4K) video resolution, the Xiaomi Mi A3 also has a bigger camera sensor capturing more light and vivid colors, a much better resolution camera in the back and a bigger aperture to capture better photos and video in low-light situations.
The Xiaomi Mi A3 features a much greater storage for applications and games than Samsung Galaxy S6, and although they both have exactly the same internal memory capacity, the Xiaomi Mi A3 also has a SD extension slot that admits a maximum of 256 GB. The Xiaomi Mi A3 counts with a much longer battery lifetime than Galaxy S6, because it has 4030mAh of battery capacity against 2550mAh.
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