Compare phones
| Global Score | |
| 72.1 | 83.2 |
| Basic Information | |
| Oppo | Xiaomi |
| Android 10 | -- |
| 2020-08-05 | 2019-03-06 |
| 6.31 x 2.88 x 0.30 inches | 6.20 x 2.94 x 0.30 inches |
| 5.68 ounces | 6.10 ounces |
| Silky white and Starry night | Black, Blue and Purple |
| Plastic and Plastic | Glass (Corning Gorilla Glass 5) and Metal |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| Display / Screen | |
| 6.5 inches | 6.4 inches |
| 2400 x 1080 pixels | 2340 x 1080 pixels |
| Super AMOLED | AMOLED |
| 405 pixels per inch | 403 pixels per inch |
| 1100 cd/m2 brightness | 600 cd/m2 brightness |
| No touch screen | No touch screen |
| 9 | 8.6 |
| Performance | |
| Qualcomm Snapdragon 720G SM7125 chipset | Qualcomm Snapdragon 855 chipset |
| Kryo 465, 64-bit, 8 nm (Octa-Core 2300 MHz) processor | Kryo 485, 64-bit, 7 nm (Octa-Core 2840 MHz) processor |
| 8 GB RAM | 6 GB RAM |
| Adreno 618 GPU | Adreno 640 GPU |
| 9.36 | 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 + 32.00 MP | 48.00 MP + 20.00 MP |
| f/1.70 aperture | f/1.80 aperture |
| -- | 26.00mm focal length |
| 0.5 inches (1/2") sensor | 0.5 inches (1/2") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 3840 x 2160 (60 fps) (4K) video resolution |
| 1280 x 720 (240 fps) (HD) slow motion video | 1920 x 1080 (960 fps) (Full HD) slow motion video |
| 11.66 | 12.1 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | LTE-A (4G), LTE (4G), HSPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM, Dual SIM |
| 6.7 | 6.3 |
| Battery Life | |
| 4000mAh Li - Polymer Battery | 3300mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 5.92 | 5.28 |
| Other Features | |
| Bluetooth 5.1 | 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 |
| FM Radio | -- |
Comparison review
The Xiaomi Mi 9 is much better than the OPPO Reno4 Pro, with an 83.2 score against 72.1. Xiaomi Mi 9 is a a bit heavier phone than OPPO Reno4 Pro, but they are 0.3inches thick. The OPPO Reno4 Pro has a bit better display than Xiaomi Mi 9, because it has a little higher display pixel density, much more brightness, a little bit larger screen and a slightly higher 1080 x 2400 resolution.
Xiaomi Mi 9 has a bit superior processor than OPPO Reno4 Pro, although it has 2 GB less RAM, they both have a Octa-Core CPU. Xiaomi Mi 9 features a bit better camera than OPPO Reno4 Pro, because although it has a tinier aperture which is not favorable for low light photography, and they both have the same video quality, a 0.5 inches sensor and the same resolution back-facing camera, the Xiaomi Mi 9 also counts with higher video frame rate.
The Xiaomi Mi 9 and OPPO Reno4 Pro count with incredibly similar storage capacity for games and applications, both have exactly the same internal storage. The OPPO Reno4 Pro has better battery life than Xiaomi Mi 9, because it has 4000mAh of battery capacity instead of 3300mAh.
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