I followed a rather lengthy process of rooting my Pixel 2 using Android 9 and then installed the PortSwigger certificate file into my Android’s /system/etc/security/cacerts, finally I changed permissions. That all worked, in fact, the cert is valid and is now enabled in my Android Trusted Certs settings. I then set up my proxy settings on my WiFi connection to route thru my machine running Burp Suite. This worked as well, as I am able to intercept HTTP traffic and SOME HTTPS traffic. However, I am not able to intercept most HTTPS traffic it seems… And if I go to https://google.com for example, I get the insecure page warning.
Does anyone know what could be causing this and a way to get better functionality out of Burp proxy with Android? Thanks.