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I did create a self signed root cert, it works as expected when accessing net from my Mac. But mobile devices refuse to work, zero network requests succeed. I did trust the root cert on both mac and mobile. ¯\_(ツ)_/¯

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Certificate pinning perhaps?

Righto, looks like impossible to fix then.

On newer versions of android it can be hard to install a root cert and trust it; mitmproxy and httptoolkit both have some great guides though. On iOS its easier - but yeah unfortunately/fortunately certificate pinned applications wont work

Depending on how much time you are willing to put in you could create a list of apps that dont PIN and selectively MiTM apps that dont

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