Compare phones
| Global Score | |
| 76 | 83.2 |
| Basic Information | |
| OnePlus | Xiaomi |
| Android 11 | -- |
| 2021-04-02 | 2019-03-06 |
| 6.30 x 2.92 x 0.34 inches | 6.20 x 2.94 x 0.30 inches |
| 6.77 ounces | 6.10 ounces |
| Arctic Sky, Astral Black and Winter Mist | Black, Blue and Purple |
| Aluminum and Glass (Corning Gorilla Glass) | Glass (Corning Gorilla Glass 5) and Metal |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 700.00 | -- |
| Display / Screen | |
| 6.5 inches | 6.4 inches |
| 2400 x 1080 pixels | 2340 x 1080 pixels |
| AMOLED | AMOLED |
| 405 pixels per inch | 403 pixels per inch |
| -- | 600 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.2 | 8.6 |
| Performance | |
| Qualcomm Snapdragon 888 chipset | Qualcomm Snapdragon 855 chipset |
| Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor | Kryo 485, 64-bit, 7 nm (Octa-Core 2840 MHz) processor |
| 8 GB RAM | 6 GB RAM |
| Adreno 660 GPU | Adreno 640 GPU |
| 9.63 | 9.63 |
| Storage | |
| 128 GB internal memory | 128 GB internal memory |
| No SD card slot | No SD card slot |
| 10.1 | 10.1 |
| Camera | |
| 48.00 MP + 16.00 MP | 48.00 MP + 20.00 MP |
| f/1.80 aperture | f/1.80 aperture |
| 23.00mm focal length | 26.00mm focal length |
| 0.71 inches (1/1.4") sensor | 0.5 inches (1/2") sensor |
| 7680 x 4320 (30 fps) video resolution | 3840 x 2160 (60 fps) (4K) video resolution |
| 1280 x 720 (480 fps) (HD) slow motion video | 1920 x 1080 (960 fps) (Full HD) slow motion video |
| 12.65 | 12.1 |
| 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 and HSUPA |
| Nano SIM | Nano SIM, Dual SIM |
| 10.7 | 6.3 |
| Battery Life | |
| 4500mAh Battery | 3300mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | Wireless Charging |
| 6.32 | 5.28 |
| Other Features | |
| Bluetooth 5.2 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | 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 |
Comparison review
Xiaomi Mi 9 is just a bit better than the OnePlus 9, having a score of 83.2 against 76. Xiaomi Mi 9's construction is thinner and just a little lighter than OnePlus 9, even though it was released many years before. Xiaomi Mi 9 features a bit better display than OnePlus 9, although it has a quite lower 1080 x 2340 resolution, a bit inferior count of pixels per inch in the display and a quite smaller screen.
The Xiaomi Mi 9 and OnePlus 9 count with really similar processing units, and although the Xiaomi Mi 9 has a lower amount of RAM memory, they both have 8 cpu cores. The Xiaomi Mi 9 counts with as much storage capacity for applications and games as the OnePlus 9, they have the same 128 GB internal memory capacity.
The OnePlus 9 features longer battery lifetime than Xiaomi Mi 9, because it has a 4500mAh battery size. OnePlus 9 captures clearer photos and videos than Xiaomi Mi 9, and although they both have the same diafragm aperture and a 48 mega pixels camera, the OnePlus 9 also has a way higher 7680x4320 video quality and a way bigger back-facing camera sensor which provides a much better image and video quality.
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