Uploading speech-to-text to OpenAI? Regular communication with Google? Using Google for assisted GPS? Giving a bunch of Google apps privileged access (if you need them for e.g. Android Auto)?

https://www.kuketz-blog.de/e-datenschutzfreundlich-bedeutet-...

https://gitlab.e.foundation/e/os/GmsCore/-/blob/a9e102567518...

https://forum.fairphone.com/t/e-os-betrays-users-privacy-ope...

https://eylenburg.github.io/android_comparison.htm

Well and besides that only shipping ASBs and no other security updates outside major Android releases (and both usually late). Using heavily outdated kernel trees (e.g. FP4 is using a Linux kernel patch level that hasn't been updated since 2020!), outdated vendor firmware blobs, etc.

It might work, but it is not very secure, nor very private.