Non-USB Debugging Mode (Mobile) about scrcpy HOT 1 OPEN

Unfortunately, this is completely impossible due to how Android works at its core. The USB debugging feature is only able to be turned on by the user directly, meaning that scrcpy would have to somehow know the screen's resolution AND display density before even beginning to control it via UHID to turn on USB debugging. Not only that but the process is rather complicated and differs from phone to phone, especially with Samsung or OnePlus devices. Other OEMs implement skins of their own as well, but that's the best example I could think of that I know changes around even how the Settings page works.

Edit: I should be more clear here; scrcpy CAN control the device using OTG mode without USB debugging enabled. HOWEVER, it is UNABLE to display the screen in any capacity, NOR can it capture audio, without having USB (or wireless) debugging enabled beforehand. This means that your physical screen must work at least well enough for you to navigate settings in order to enable USB debugging manually. It doesn't have to respond to touch, but as long as you can see enough of the screen to know what you're doing, you'll be fine.

from scrcpy.