Compare phones
| Global Score | |
| 76 | 79.2 |
| Basic Information | |
| OnePlus | Xiaomi |
| Android 11 | Android 11, 10, 9.0 Pie |
| 2021-04-02 | 2019-07-24 |
| 6.30 x 2.92 x 0.34 inches | 6.04 x 2.83 x 0.33 inches |
| 6.77 ounces | 6.13 ounces |
| Arctic Sky, Astral Black and Winter Mist | Blue, Gray and White |
| Aluminum and Glass (Corning Gorilla Glass) | Glass (Corning Gorilla Glass 5) and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 700.00 | -- |
| Display / Screen | |
| 6.5 inches | 6.1 inches |
| 2400 x 1080 pixels | 1560 x 720 pixels |
| AMOLED | Super AMOLED |
| 405 pixels per inch | 282 pixels per inch |
| No touch screen | No touch screen |
| 8.2 | 7.3 |
| Performance | |
| Qualcomm Snapdragon 888 chipset | Qualcomm Snapdragon 665 chipset |
| Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor | Kryo 260, 64-bit, 11 nm (Octa-Core 2000 MHz) processor |
| 8 GB RAM | 4 GB RAM |
| Adreno 660 GPU | Adreno 610 GPU |
| 9.63 | 9.09 |
| Storage | |
| 128 GB internal memory | 128 GB internal memory |
| No SD card slot | microSDXC (up to 256 GB) external memory slot |
| 10.1 | 13.18 |
| Camera | |
| 48.00 MP + 16.00 MP | 48.00 MP + 32.00 MP |
| f/1.80 aperture | f/1.80 aperture |
| 23.00mm focal length | -- |
| 0.71 inches (1/1.4") sensor | 0.43 inches (1/2.3") sensor |
| 7680 x 4320 (30 fps) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 1280 x 720 (480 fps) (HD) slow motion video | 1280 x 720 (240 fps) (HD) slow motion video |
| 12.65 | 11.44 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM | Nano SIM |
| 10.7 | 6.7 |
| Battery Life | |
| 4500mAh Battery | 4030mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 6.32 | 5.92 |
| Other Features | |
| Bluetooth 5.2 | 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 |
Comparison review
Xiaomi Mi A3 is slightly better than OnePlus 9, getting a 79.2 score against 76. The Xiaomi Mi A3 is an older device than OnePlus 9, but Xiaomi managed to build it a little bit lighter and a little thinner. Both of these devices come with the same Android 11 operating system, so both should provide the user identical OS features.
OnePlus 9 has a brighter screen than Xiaomi Mi A3, because it has a way higher 1080 x 2400 pixels resolution, a better display pixels density and a bit bigger screen. OnePlus 9 features a little bit better performance than Xiaomi Mi A3, and although they both have a Octa-Core CPU, the OnePlus 9 also has more RAM memory.
The Xiaomi Mi A3 features a superior storage for games and applications than OnePlus 9, and although they both have exactly the same internal memory, the Xiaomi Mi A3 also has a SD memory card expansion slot that holds a maximum of 256 GB. The OnePlus 9 counts with just a little better battery performance than Xiaomi Mi A3, because it has a 4500mAh battery size against 4030mAh.
The OnePlus 9 shoots much better videos and photos than Xiaomi Mi A3, and although they both have a camera with a 48 megapixels and a F1.8 aperture, the OnePlus 9 also has a lot higher 7680x4320 video quality and a much larger back-facing camera sensor providing a lot better image quality.
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