| Global Score | |
| 71.9 | 79.2 |
| Basic Information | |
| Samsung | Xiaomi |
| Windows Phone 8 | Android 11, 10, 9.0 Pie |
| 2014-04-04 | 2019-07-24 |
| 5.42 x 2.75 x 0.33 inches | 6.04 x 2.83 x 0.33 inches |
| 4.79 ounces | 6.13 ounces |
| Gray | Blue, Gray and White |
| -- | Glass (Corning Gorilla Glass 5) and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 249.00 | -- |
| Display / Screen | |
| 5 inches | 6.1 inches |
| 1080 x 1920 pixels (Full HD) | 1560 x 720 pixels |
| Super AMOLED | Super AMOLED |
| 441 pixels per inch | 282 pixels per inch |
| Capacitive, Multi-touch | No touch screen |
| 9.1 | 7.3 |
| Performance | |
| Qualcomm Snapdragon 800 chipset | Qualcomm Snapdragon 665 chipset |
| Quad-Core 2300 MHz processor | Kryo 260, 64-bit, 11 nm (Octa-Core 2000 MHz) processor |
| 2 GB RAM | 4 GB RAM |
| Adreno 330 (450 MHz) GPU | Adreno 610 GPU |
| 9.27 | 9.09 |
| Storage | |
| 16 GB internal memory | 128 GB internal memory |
| microSD, microSDHC, microSDXC (up to 64 GB) external memory slot | microSDXC (up to 256 GB) external memory slot |
| 6.16 | 13.18 |
| Camera | |
| 13.00 MP + 2.00 MP | 48.00 MP + 32.00 MP |
| -- | f/1.80 aperture |
| -- | 0.43 inches (1/2.3") sensor |
| 1920 x 1080 (Full HD) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| -- | 1280 x 720 (240 fps) (HD) slow motion video |
| 6.93 | 11.44 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE (4G), UMTS, EV-DO A, EDGE, GPRS, GSM and CDMA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| SIM | Nano SIM |
| 6.1 | 6.7 |
| Battery Life | |
| 2600mAh Li-Ion Battery | 4030mAh Battery |
| Removable Battery | Non-Removable Battery |
| 480 hours standby time 20 hours talk time | -- |
| 4.56 | 5.92 |
| Other Features | |
| Bluetooth 3.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | -- |
| -- | Infra-red port |
| -- | Fingerprint ID Scanner |
| Accelerometer, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| -- | FM Radio |
Xiaomi Mi A3 is much better than the Samsung ATIV SE, having a overall score of 79.2 against 71.9. Xiaomi Mi A3 has Android 11 operating system, while Samsung ATIV SE has Windows Phone 8 operating system. Xiaomi Mi A3's body has the same thickness than Samsung ATIV SE, but it is heavier. The Samsung ATIV SE features a much better display than Xiaomi Mi A3, because although it has a little smaller screen, it also counts with a much greater screen pixels density and a higher 1920 x 1080px resolution.
The Samsung ATIV SE has just a bit better processing power than Xiaomi Mi A3, because although it has a lower number of cores (although faster) and a lower amount of RAM, it also counts with an extra graphics processing unit. The Xiaomi Mi A3 counts with much more storage to store more games and applications than Samsung ATIV SE, because it has 128 GB internal storage capacity and a SD card slot that holds a maximum of 256 GB.
Xiaomi Mi A3 has a superior battery life than Samsung ATIV SE, because it has 4030mAh of battery capacity instead of 2600mAh. The Xiaomi Mi A3 has a very superior camera than Samsung ATIV SE, because it has a way higher 3840x2160 (4K) video quality and a much more megapixels camera.
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