How to Automatically Block Unknown Callers on iPhone (iOS 13.3)?<br /><br />Step 1: Open 'Settings' App.<br /><br />Step 2: Scroll down, and then tap on 'Phone.'<br /><br />Step 3: Scroll down to 'Call Silencing and Blocked Contacts.' Under that, Tap on Switcher next to 'Silence Unknown Callers' to make it 'On.'<br /><br />Step 4: After that, you can close the 'Settings' App.<br /><br /><br />It's done.<br /><br />Thanks for watching, please like and subscribe <br /><br />==============================================<br /><br />https://www.facebook.com/HowtoTutorialsByAmit/<br />
