I’ve noticed two main things about the many robocalls/spamcalls I’ve received (my carrier actually has spam blocking, and I haven’t received very many since activating it)<p>1. Most calls I receive from numbers <i>not</i> in my contact list are spam. They also usually just call once, whereas if it’s a legit call that I was expecting, but neglected to pick up, they’ll call again within a few minutes.
2. I’ll get robocalls from one area code at a time. I remember getting calls from 772 one week, 727 the next, 643 a few days later, etc.<p>Obviously it won’t crush spam entirely, but I can imagine that fixing even just these two things would filter out a boatload if spam from reaching consumers.<p>Oh, and calls from “Scam Likely” should <i>never</i> reach my phone to begin with.