How to avoid unwanted calls on iPhone

Oh, joy. After many years with an iPhone, today I learned how to stop spam calls with a single, not-really-super-secret move. Settings > Phone > Silence Unknown Callers That’s it. Unknown callers now go straight to my recent calls list for me to (eventually) review. Most importantly, the phone doesn’t ring. I initially had True Caller installed and enabled, which worked for a while. Spammers use throw-away numbers anyway, so it’s super-hard for tools like that to keep track. »