| Global Score | |
| 71.6 | 76 |
| Basic Information | |
| Xiaomi | OnePlus |
| Android 4.4.2, 4.2.1 | Android 11 |
| 0000-00-00 | 2021-04-02 |
| 5.67 x 2.90 x 0.32 inches | 6.30 x 2.92 x 0.34 inches |
| 5.11 ounces | 6.77 ounces |
| Black | Arctic Sky, Astral Black and Winter Mist |
| -- | Aluminum and Glass (Corning Gorilla Glass) |
| -- | Scratch-Resistant Glass |
| $ 300.00 | $ 700.00 |
| Display / Screen | |
| 5 inches | 6.5 inches |
| 1080 x 1920 pixels (Full HD) | 2400 x 1080 pixels |
| IPS LCD | AMOLED |
| 441 pixels per inch | 405 pixels per inch |
| Capacitive, Multi-touch | No touch screen |
| 9.1 | 8.2 |
| Performance | |
| Qualcomm Snapdragon 800 8974-AB chipset | Qualcomm Snapdragon 888 chipset |
| Krait 400 (Quad-Core 2360 MHz) processor | Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor |
| 2 GB (933 MHz) RAM | 8 GB RAM |
| Adreno 330 (450 MHz) GPU | Adreno 660 GPU |
| 9.27 | 9.63 |
| Storage | |
| 64 GB internal memory | 128 GB internal memory |
| No SD card slot | No SD card slot |
| 7.7 | 10.1 |
| Camera | |
| 13.00 MP + 2.00 MP | 48.00 MP + 16.00 MP |
| f/2.20 aperture | f/1.80 aperture |
| -- | 23.00mm focal length |
| -- | 0.71 inches (1/1.4") sensor |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 7680 x 4320 (30 fps) video resolution |
| -- | 1280 x 720 (480 fps) (HD) slow motion video |
| 8.91 | 12.65 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| HSPA+ (4G), HSDPA, HSUPA, UMTS, EDGE, GPRS and GSM | 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| SIM | Nano SIM |
| 4.6 | 10.7 |
| Battery Life | |
| 3050mAh Li-Ion Battery | 4500mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 5.04 | 6.32 |
| Other Features | |
| Bluetooth 4.0 | Bluetooth 5.2 |
| GPS | GPS |
| NFC | NFC |
| -- | Fingerprint ID Scanner |
| Accelerometer, Compass, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
The OnePlus 9 is just a bit better than the Xiaomi Mi-3, having a score of 76 against 71.6. OnePlus 9's design is a little thicker and much heavier than Xiaomi Mi-3. These devices work with Android OS, but the OnePlus 9 has an older 11 version while Xiaomi Mi-3 has Android 4.4.2 version. The OnePlus 9 features a little better hardware performance than Xiaomi Mi-3, because although it has doesn't have an additional graphics processing unit, it also counts with a higher amount of RAM memory and a larger number of cores.
Xiaomi Mi-3 counts with a better looking screen than OnePlus 9, because although it has a much smaller screen and a little lower resolution of 1920 x 1080 pixels, it also counts with a just a bit better count of pixels per screen inch. OnePlus 9 features a way bigger storage to store more apps and games than Xiaomi Mi-3, because it has 64 GB more internal storage capacity.
OnePlus 9 shoots much clearer videos and photos than Xiaomi Mi-3, because it has a much better 7680x4320 video definition, a way higher 48 mega pixels resolution back camera and a larger aperture. The OnePlus 9 counts with a very superior battery performance than Xiaomi Mi-3, because it has 4500mAh of battery capacity instead of 3050mAh.
Although OnePlus 9 is a better device, it is way more expensive than Xiaomi Mi-3, and it doesn't have such a good relation between it's price and quality as Xiaomi Mi-3. If you want to save a few dollars, you can get the Xiaomi Mi-3, letting go a few features and specifications, but you'll get the most out of your savings.
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