Is it even possible on android? Is there a FOSS dialer to optionally encrypt some phone calls (non voip) using a pre-shared key with other party?

@MrSoup@lemmy.zip
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Why should I need a rooted phone? Can’t dialer apps send whatever they want through cellular network?

Maybe I’m wrong, but I think it’s not the dialer app that operates the microphone, or at least it does not have total control over it, to record something and pass something else to the system.

umami_wasabi
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Yes and no. Google put some limitation on the software side. For example, you can’t do call record unless you’re in a country isn’t two party consent.

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