In the case of WWAN, the use of the WiFi interface will also trigger the local network alert?

Can this request be intercepted by hooking an interface? I want to discover caller by breakpoint

I don't know how to trigger the local network permission alert, it happens once in a while. Therefore, after deleting the third-party library, it cannot be proved that the alert will not be triggered.

The IP resolved from the domain name is not the real IP. So, I want to set the records in the hosts file myself. Is there the interface?

The dns of the Internet operator is polluted, it is not the real ip of my domain name, I want to manually modify the hosts file in my app, is there such an interface?

Is there any recommended way to fix my DNS?

https://www.wwdcnotes.com/notes/wwdc20/10047/，Can the second solution in the article solve this problem?

I want to collect crashes that cannot be started by the app, so I want to get the data on the organizer. Is there a related interface?

My project applied for permission to play audio in the background, but I found that after I did not play audio, the program keep alive. May I ask how I can locate the cause of the background alive?