Is it even possible to make a privacy respecting device out of my mobile phone?

I hope this doesn't count as tech support. I'm not asking for a guide on how to to X, just looking for an answer and maybe a suggestion or two.

I would like to neuter my smartphone into a portable terminal with bluetooth functionality for my headphones and want everything else basically gone for good. WLAN is good but not a must.

I am not that far into the mobile phone game and as far as I can tell, the …

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