Meta/Facebook preinstalls an app called Meta Services (previously Facebook services) on a very large percentage of android devices (I’ve never used one without it) and while they claim it helps updates and synchronisation between different meta apps, it is very suspicious. Why preinstall it on devices of people who will potentialy never use a single meta app?
Go to your app list/app management and show system apps and find anything with the words “meta” or “Facebook” then turn off network access for those apps (if you can) and disable them. (eg. Meta app manager).
https://www.askwoody.com/forums/topic/meta-services-an-android-app-or-not/
https://fixyourandroid.com/about/facebook-app-manager/
https://www.reddit.com/r/GalaxyS20FE/comments/ttmx4t/meta_services/
No, we don’t have to accept that privacy is dead. We need to learn to control the technology around us.
This podcast covers this topic in depth with a lot of practical instruction for what you can do to manage your privacy and security: The Privacy, Security, and OSINT Show