How to enable USB debugging mode on OPPO phones?

For ColorOS 7 and above versions:

1. Go to your phone's "Settings > About This Phone (or About Phone) > Version Information > Version Number" and tap on the version number multiple times (enter your lock screen password if prompted). This will enable "Developer Mode."

2. Then, go to "Settings > Other Settings (or System Settings) > Developer Options > USB Debugging" to configure the settings.