only ones that dont hate robo calls. 1: Data (star trek next generation) 2: the evil iRobot (from the movie iRobot) 3: the jerky boys (they will call them back and prank the owners of the robo call center)
I have a cell phone that doesn't have built in call screening (Moto E). Here is my solution to screen calls. I created a White-list of allowed callers. Here's how. In Audacity on my PC I created a 10-second Silent MP3 ringtone. I loaded this Silent MP3 ringtone into my Moto E and made it the Default ring. Then for all of my desired contacts, I gave them individual real ringtones. Now when an unknown caller calls (like a robo-call, telemarketer, etc, etc), it doesn't ring my phone and disturb me, as they get the Silent ringtone. They can still leave a voice-mail. But I would rather screen them that way then have to deal with a live annoying caller.
I'm not giving them my email address while this appears on their site: What other kind of phone is there for it to be available on? Just VoIP services I guess? I don't have one of those anyway.