How to Silence Unknown Callers to Stop Robocall Spam on iPhone Share June 26, 2022 Dm4r Technology Tired of getting robocalls all day long on your iPhone? Your iPhone lets you silence the harassment by turning on a feature called “Silence Unknown Callers” in Settings. Here’s how to do it. Read This Article on How-To Geek › Source : How to Silence Unknown Callers to Stop Robocall Spam on iPhone