Let me say right away that this is my personal experience, in which I took some very radical decisions. If you are not ready for such decisions, just skip the relevant points. This post is specifically about smartphones; tablets (which do not have a SIM slot) can simply be reflashed with firmware such as GrapheneOS or LineageOS. Disclaimer: This is not a manual, but a story about my personal experience. I am not encouraging or urging anyone to repeat it. However, I will include the names of th...