June 25, 2024
This article provides a comprehensive guide on how to block unknown calls on iPhone, with a step-by-step guide, recommended call blocking apps, reasons for blocking calls, and alternatives. It also covers legal and ethical considerations in blocking calls. Learn how to protect your privacy and avoid disturbances on your iPhone.


As iPhone users, we have all experienced the frustration of receiving unwanted calls from unknown numbers. These calls not only disturb our daily routine but could also be a potential threat to our personal privacy and security. Fortunately, there are ways to effectively block unknown calls on iPhone. In this article, we will provide you with a comprehensive guide on how to do it, as well as a list of recommended apps and alternatives.

Step-by-Step Guide: How to Block Unknown Calls on iPhone

Follow these simple steps to block unknown calls on iPhone:

Step 1: Accessing the Settings menu

Open the Settings app on your iPhone and tap on “Phone.”

Step 2: Locating the “Silence Unknown Callers” option

Scroll down until you find “Silence Unknown Callers” and tap on it. The option should be located under “Call Silencing and Blocked Contacts.”

Step 3: Enabling the option

Toggle the switch next to “Silence Unknown Callers” to the right to enable the feature. Once enabled, any call from a number that is not in your contacts list will be silenced and sent straight to voicemail.

If you face any issues in blocking calls, here are some tips:

  • Make sure your iPhone is running the latest version of iOS
  • Ensure that your carrier supports call blocking
  • Disable any third-party call blocking apps that could be interfering with the Silence Unknown Callers feature
  • Contact Apple Support if the issue persists

Top 5 Call Blocking Apps for iPhone

If you want more control over call blocking on your iPhone, you can consider downloading a dedicated call blocking app. Here are the top 5 apps we recommend:

  • Truecaller – Free with in-app purchases
  • Nomorobo Robocall Blocking – Free with in-app purchases
  • RoboKiller – $3.99/month or $29.99/year
  • Hiya Caller ID and Block – Free with in-app purchases
  • YouMail Voicemail and Spam Block – Free with in-app purchases

Each app has its own set of features, such as caller ID, robocall blocking, custom call blocking rules, voicemail transcription, and more. Be sure to read the app descriptions and user reviews before making a decision.

Why You Should Block Unknown Callers on iPhone

The rise of robocalls and spam calls is a growing concern, and blocking unknown callers on an iPhone could be an effective solution for several reasons:

  • Reduces disturbances and distractions: Block unknown callers to avoid being disturbed by unnecessary calls or scams during important meetings, work, or leisure time.
  • Prevents spam and robocalls: Blocking unknown callers can protect you from scams and robocalls that could threaten your privacy and financial security.
  • Preserves personal privacy: Stop unknown callers from accessing your personal information through unwanted calls or messages.

Alternatives to Blocking Calls on iPhone

If you prefer not to block calls outright, there are other alternatives you can consider:

  • Do Not Disturb feature: This feature silences calls, alerts, and notifications when enabled. You can customize it to allow calls from certain contacts or repeated calls.
  • Setting up custom call blocking rules: You can add specific phone numbers or contacts to your blocked list in the Settings app, or use a call blocking app to set up custom rules for blocking calls.

Keep in mind that each alternative has its own advantages and disadvantages, depending on your needs and preferences.

Legal Aspects of Blocking Calls on iPhone

When it comes to blocking calls on iPhone, there are legal and ethical considerations to keep in mind:

  • GDPR and other privacy laws: If you live in the European Union or another country with strict data protection laws, you should ensure that your call blocking practices comply with local regulations.
  • User’s rights and responsibilities: Make sure you do not violate the rights of legitimate callers or harass them through blocking. You are responsible for your call blocking decisions.
  • Potential legal consequences: If you block calls in a way that breaks any laws or infringes on someone’s rights, you risk facing legal action against you.

Therefore, ensure that you take the proper legal measures and ethical considerations when blocking calls on your iPhone.


In conclusion, blocking unknown calls on iPhone is a simple yet effective way to avoid unwanted calls and preserve your privacy. Whether through the Silence Unknown Callers feature or a dedicated call blocking app, you have several options to choose from. If you find that blocking calls is not suitable for your needs, you can always consider alternative solutions like the Do Not Disturb feature or setting up custom blocking rules. Remember to be aware of legal and ethical aspects and make informed decisions.

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