I am increasingly conscious of security and privacy. I don’t want my data or telemetry being sent to google or Facebook, and I want to make sure my device is encrypted and not readable by anyone other than me.
Is there a standard go-to guide on securing an android device with these types of goals in mind? Is true privacy possible without having to install Graphene?
not sure about standard, but privacyguides.org has some nice resources for getting started. I recommend their “threat model” resource in particular; it shows you what direction you should work towards depending on your privacy goals.
Privacy Guides has an Android page as well.