If Google Play Services is disabled, it shouldn't be able to run. Disabling it takes a bit of extra effort, but is possible without rooting, at least on my phon

If Google Play Services is disabled, it shouldn't be able to run. Disabling it takes a bit of extra effort, but is possible without rooting, at least on my phone. (The Fairphone forums advise not to root the phone and uninstall it, because then the phone won't boot. That does make me a bit suspicious, but at least the process is not running during normal usage.)