Modding my Android Smartphone

A quick update, 7/8/2021:  I I switched to GrapheneOS a couple of months ago, only swap the SIM card into an older, LineageOS-powered smartphone when I need to use Google services. Vodafone knows where I am. My cellular service provider knows now, yesterday, tomorrow, whenever or wherever my smartphone-with-a-Vodafone-SIM is turned on, unless I swaddle…