How to Stop Spam Calls on iPhone with Silence Unknown Callers

Tired of your iPhone getting constant spam calls and junk calls? For many of us, a steady stream of spam calls plague our cell phones. If you block the phone numbers they call spammers are always a step ahead and typically use different phone numbers for each new spam call, making it a challenge to be on top of.

That’s where the iPhone feature for silencing unknown callers steps in. It does a great job of eliminating spam calls by sending unknown callers to voicemail.

How to Enable “Silence Unknown Callers” on iPhone

  • Open the “Settings” app an iPhone
  • Go to “Phone” settings
  • Scroll down to locate “Silence Unknown Callers” and toggle that feature to the ON position


  • Exit out of Settings as usual
    Once this feature is turned on, your iPhone will no longer ring aloud or vibrate.Instead, calls from unknown numbers are automatically silenced and routed to voicemail. They’ll also appear in the Phone apps “Recents” call list so you can always check to see if you missed an important call.

    Meanwhile, incoming calls from anyone in your contacts will still ring through. Also incoming calls from any of your recent outgoing calls, and any numbers found by Siri Suggestions.

    This is probably fairly obvious. But make sure that all the contacts you do want to be able to reach you easily are already added as contacts to your iPhone. You can easily add contacts to the iPhone through the Contacts app, where you can add:

  • persons
  • business name
  • phone number(s)
  • email addresses etc.

This particular “Silence Unknown Callers” feature is available only for iPhone with iOS 13 and later, but earlier models can still use this approach to block unknown callers by using Do Not Disturb and allowing calls only from your contacts to come through.


Are you using Silence Unknown Callers with iPhone? Let us know your thoughts and experiences in the comments below!

Also Read: How to Turn off an ad on your Mac based on location

Leave a Comment

Scroll to Top