So far, I've done the first two items on the list for smart phones. I checked to see if my number is on the FTC Do Not Call list, for what it's worth.
Next, I downloaded the AT&T Call Protect app. I did that yesterday, and I'm using the free part of that app. So far, I've blocked 5 numbers, but it's too soon to know if that has any effect. AT&T is vague about what this app does. But it makes it impossible to avoid knowing that I can get more better stuff if I download the $4/month app.
For my landline phone, I've been using the free landline version of NomoRobo for several months. It seems to block about half the calls I get. Not perfect, but not bad.
Has anyone else tried AT&T Call Protect, Verizon Call Filter, the T-Mobil or other smartphone apps?
Has anyone tried YouMail, Nomorobo, RoboKiller, or Truecaller on their smartphone?