How to Block Unknown Callers on iOS: A Complete Guide

Are you tired of receiving calls from telemarketers and spammers with unidentified caller IDs? Well, iOS 13 has a feature that allows you to mute unknown calls and prevent them from even ringing on your iPhone. In this guide, we will walk you through how to block unknown callers on iOS and its limitations.

Steps to Block Unknown Callers on iOS

Follow the simple steps below to activate the Mute Unknown Calls feature on your iPhone and block unknown callers:

  • Go to Settings on your iPhone
  • Scroll down and tap on Phone
  • Enable Mute Unknown Calls

That’s it! Now, when you receive a call from an unknown caller, it will go straight to voicemail without ringing

Limitations of the Mute Unknown Calls Feature on iOS

It is essential to keep in mind the limitations of the Mute Unknown Calls feature:

  • Important calls from a doctor’s office, an employer, or a contractor might get muted as they are not listed in your contacts
  • If you disable this feature, you will receive spam calls again

If you know you are expecting a call from an unknown number, you can disable this feature temporarily until after the call.


1. Can I block all unknown callers?

No, you cannot block all unknown callers on iOS. However, you can enable the “Silence Unknown Callers” option to prevent them from ringing on your iPhone.

2. Will the muted unknown caller be notified that they were blocked?

No. The muted unknown caller will only go to your voicemail without ringing. They will not receive any notification indicating that they were blocked.

3. Will emergency calls still come through with this feature enabled?

Yes, emergency calls will still come through with this feature enabled.

4. Does the Mute Unknown Calls feature stop robocalls?

Yes, the Mute Unknown Calls feature on iOS 13 can stop robocalls and spam calls from ringing on your iPhone. This feature works by automatically sending calls from numbers that are not saved in your contact list to voicemail.


With the Mute Unknown Calls feature, you can effectively block unknown callers from disturbing you. However, remember that enabling this feature may result in missing some essential calls. We hope our guide on how to block unknown callers on iOS was helpful.

Editorial Staff
Editorial Staff
The Bollyinside editorial staff is made up of tech experts with more than 10 years of experience Led by Sumit Chauhan. We started in 2014 and now Bollyinside is a leading tech resource, offering everything from product reviews and tech guides to marketing tips. Think of us as your go-to tech encyclopedia!


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