| Global Score | |
| 75.2 | 76.6 |
| Basic Information | |
| Xiaomi | OnePlus |
| Android 4.4.3 | Android 11 |
| 2014-07-22 | 2021-04-02 |
| 5.48 x 2.70 x 0.35 inches | 6.43 x 2.90 x 0.34 inches |
| 5.26 ounces | 6.95 ounces |
| Black and White | Forest Green, Morning Mist and Stellar Black |
| -- | Glass (Corning Gorilla Glass) |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 329.00 | $ 890.00 |
| Display / Screen | |
| 5 inches | 6.7 inches |
| 1080 x 1920 pixels (Full HD) | 3216 x 1440 pixels |
| IPS LCD | AMOLED |
| 441 pixels per inch | 526 pixels per inch |
| Capacitive, Multi-touch | No touch screen |
| 9.1 | 8.8 |
| Performance | |
| Qualcomm Snapdragon 801 8974-AC chipset | Qualcomm Snapdragon 888 chipset |
| Qualcomm Krait 400 (Quad-Core 2500 MHz) processor | Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor |
| 3 GB RAM | 8 GB RAM |
| Adreno 330 (450 MHz) GPU | Adreno 660 GPU |
| 9.36 | 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 + 8.00 MP | 48.00 MP + 16.00 MP |
| f/1.80 aperture | f/1.80 aperture |
| -- | 23.00mm focal length |
| 0.33 inches (1/3.06") sensor | 0.71 inches (1/1.4") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 7680 x 4320 (30 fps) video resolution |
| 1920 x 1080 (60 fps) (Full HD) slow motion video | 1280 x 720 (480 fps) (HD) slow motion video |
| 9.79 | 12.65 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE (4G), HSPA+ (4G), HSDPA, HSUPA, EDGE, GPRS and GSM | 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| SIM | Nano SIM |
| 7 | 10.7 |
| Battery Life | |
| 3080mAh Li-Polymer 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 |
| Infra-red port | -- |
| -- | Fingerprint ID Scanner |
| Accelerometer, Compass, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
The OnePlus 9 Pro is slightly better than the Xiaomi Mi 4, getting a overall score of 76.6 against 75.2. Both devices in this review come with Android OS (operating system), but OnePlus 9 Pro has older 11 version and Xiaomi Mi 4 has Android 4.4.3 version. The OnePlus 9 Pro construction is noticeably newer and just a little bit thinner than Xiaomi Mi 4's, but it's way heavier.
The OnePlus 9 Pro has a little better processing power than Xiaomi Mi 4, because although it has doesn't have an extra graphics co-processor, it also counts with a greater amount of RAM and more CPU cores. The Xiaomi Mi 4 has a slightly better looking screen than OnePlus 9 Pro, although it has a just a little worse pixel density, a way smaller display and a way lower resolution of 1920 x 1080.
The OnePlus 9 Pro shoots greater videos and photos than Xiaomi Mi 4, and although they both have a F1.8 camera aperture, the OnePlus 9 Pro also has a lot larger sensor taking more light and vivid colors, a much more MP back camera and a way higher video quality. OnePlus 9 Pro has a lot bigger storage capacity to store more games and applications than Xiaomi Mi 4, because it has 128 GB internal memory capacity.
The OnePlus 9 Pro features a much better battery life than Xiaomi Mi 4, because it has a 4500mAh battery capacity.
Although OnePlus 9 Pro is a better device, it costs a lot more than the Xiaomi Mi 4, and it doesn't have such a good quality/price relation as the Xiaomi Mi 4. So if you want that extra features and specs, you can buy the OnePlus 9 Pro, but if you don't you can save a couple dollars and buy the Xiaomi Mi 4, resigning some features and specs.
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