My phone is set to ring only if the caller is already in my phone book. Everyone else will automatically go to voicemail. This is an easy setting to change, if

My phone is set to ring only if the caller is already in my phone book. Everyone else will automatically go to voicemail. This is an easy setting to change, if I’m expecting an incoming call from a number I don’t already know. I also use Truecaller and RoboKiller.