setting method of default application management for p>OPPO mobile phone:

ColorOS 5.2.1 and above: "setting >; Application (application management) > Default application management ".

coloros version 3.1-5.2: "Settings >; General > Application management > Default application management ".

Tips:

ColorOS 11 system cancels the setting switch of the default camera, and calls the system camera by default.

due to different models and system versions, the operation path may be slightly different, please refer to the actual operation interface display of the mobile phone.

this answer applies to all OPPO models.