Compare phones
| Global Score | |
| 83.3 | 76 |
| Basic Information | |
| Xiaomi | OnePlus |
| Android 10, 9.0 Pie, 8.0 Oreo | Android 11 |
| 2018-06-05 | 2021-04-02 |
| 6.10 x 2.94 x 0.30 inches | 6.30 x 2.92 x 0.34 inches |
| 6.17 ounces | 6.77 ounces |
| Black, Blue, Gold and White | Arctic Sky, Astral Black and Winter Mist |
| Glass (Corning Gorilla Glass 5) | Aluminum and Glass (Corning Gorilla Glass) |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| -- | $ 700.00 |
| Display / Screen | |
| 6.2 inches | 6.5 inches |
| 2248 x 1080 pixels | 2400 x 1080 pixels |
| AMOLED | AMOLED |
| 402 pixels per inch | 405 pixels per inch |
| 600 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 8.6 | 8.2 |
| Performance | |
| Qualcomm Snapdragon 845 SDM845 chipset | Qualcomm Snapdragon 888 chipset |
| Kryo 385, 64-bit, 10 nm (Octa-Core 2800 MHz) processor | Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor |
| 6 GB RAM | 8 GB RAM |
| Adreno 630 GPU | Adreno 660 GPU |
| 9.63 | 9.63 |
| Storage | |
| 256 GB internal memory | 128 GB internal memory |
| No SD card slot | No SD card slot |
| 13.3 | 10.1 |
| Camera | |
| 12.00 MP + 20.00 MP | 48.00 MP + 16.00 MP |
| f/1.80 aperture | f/1.80 aperture |
| 56.00mm focal length | 23.00mm focal length |
| 0.39 inches (1/2.55") sensor | 0.71 inches (1/1.4") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 7680 x 4320 (30 fps) video resolution |
| 1280 x 720 (960 fps) (HD) slow motion video | 1280 x 720 (480 fps) (HD) slow motion video |
| 9.9 | 12.65 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM |
| 6.7 | 10.7 |
| Battery Life | |
| 3400mAh Li - Polymer Battery | 4500mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 5.36 | 6.32 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.2 |
| GPS | GPS |
| NFC | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
Comparison review
The Xiaomi Mi 8 has a global score of 83.3, which is a bit better than the OnePlus 9's 76 overall score. Both phones in this review come with Android operating system, but the Xiaomi Mi 8 has 10 version and OnePlus 9 has Android 11. The Xiaomi Mi 8 design is somewhat thinner and a little bit lighter than the OnePlus 9, despite of the fact that it was released 3 years before.
OnePlus 9's processor is very similar to the Xiaomi Mi 8 one, and although the OnePlus 9 has more RAM, they both have a Octa-Core processing unit. Xiaomi Mi 8 counts with just a bit better looking display than OnePlus 9, although it has a bit worse 1080 x 2248 resolution, a little smaller display and a little bit lower pixels number per inch in the display.
The OnePlus 9 has a lot better camera than Xiaomi Mi 8, and although they both have the same camera aperture, the OnePlus 9 also has a camera with a much better resolution, a much larger back camera sensor providing a lot higher image quality and a way better video resolution. The Xiaomi Mi 8 has much more memory for applications, games, photos and videos than OnePlus 9, because it has more internal storage capacity.
The OnePlus 9 counts with improved battery performance than Xiaomi Mi 8, because it has 4500mAh of battery capacity.
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