Silence Unknown Callers – How to Block Spam Calls on iPhone in iOS 17

Lately, many iPhone users have been inundated with unknown calls, including those from private numbers, telemarketing agencies, and spam callers. In this article, I’ll share a straightforward method to silence unknown callers or block spam calls on your iPhone, all without the need to download any third-party apps.

This method is entirely free, as it utilizes a built-in feature of iPhones that support iOS 13 and later. This feature uses Siri’s intelligence to vet incoming numbers based on contacts stored in your phone’s address book, email, or messages app. If there’s any prior interaction with the incoming number, the call will ring through even if it’s not saved in your contacts. If there’s no recognized history, those calls will be silenced and directly sent to your voicemail. Let’s dive in and learn how to stop spam calls.

How to Block Spam Calls on iPhone

The easiest way to block spam calls on your iPhone is by enabling the “Silence Unknown Callers” feature in your device’s settings. This feature is completely free, and any device running iOS 13 or later can access it. Here’s how to zap those pesky spam calls:

  • Open the Settings app on your iPhone and select “Phone.”
Open Phone settings on iPhone
  • Scroll down a bit and tap on the “Silence Unknown Callers” option.
Tap on the Silence Unknown Callers on iPhone settings
  • Toggle the “Silence Unknown Callers” switch to the on position. Once activated, any call from a number not in your contacts will be automatically silenced and sent to voicemail.
Turn on Silence Unknown Callers on iPhone


Please note, this feature might not be suitable for everyone, especially those who rely on receiving calls from new numbers, like businesses awaiting customer calls, or individuals expecting callback offers from banks or doctors. In these scenarios, if you haven’t previously interacted with the number, there’s a chance you might miss important calls. So, use this feature judiciously. If you believe unknown calls aren’t critical for you, go ahead and activate this feature on your iPhone. Enjoy a peaceful life, free from the stress of unwanted calls.

Similar Posts