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this post was submitted on 10 Nov 2025
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Privacy
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FWIW, they're not sandboxed from google play services:
Accordingly, google would have access to the Signal data on your phone. However, I don't know whether the encryption would provide a measure of protection against google. GrapheneOS by default does not use google play services, and provides a sandboxed version for people who need the functionality.
It's possible but complicated.
Since apps have access to the TPM API they can encrypt their own data in such a way that only the app's own authorized processes can retrieve the decryption key from the TPM chip
and the os. Always the os, if it has root access :)
Unless you're using GrapheneOS and then the answer is "Mostly but it depends".