Block Unwanted Calls: Android & IPhone Methods

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Edgar Nicov

How-To

4 min. read

Published on October 5, 2025

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Are you tired of constant interruptions from unknown numbers? Blocking calls can bring much-needed peace, but what if you only want to receive calls from your contacts? Both Android and iPhone offer ways to block all calls except those from people in your address book. This article details the simple steps to filter out unwanted callers and ensure you only hear from the people who matter most.

Whether you’re dealing with persistent spam calls or simply want to limit distractions, learning how to block all calls except contacts on your Android or iPhone is a valuable skill. This guide provides easy-to-follow instructions for both operating systems.

How Can I Block All Calls Except Contacts on My Phone?

Android: Using Call Screening and Third-Party Apps

Android doesn’t have a built-in feature to directly block all calls except from contacts. However, you can achieve a similar result using call screening or third-party apps.

Enable Call Screening (If Available):

Open the Phone app.
Tap the three dots (menu) in the upper right corner.
Select Settings.
Look for Call Screening or Spam and Call Screen. This feature may vary depending on your Android version and phone manufacturer.
Configure the settings to automatically screen calls from unknown numbers. This might involve the Google Assistant asking the caller to identify themselves.

Manually Block Unknown Numbers (Less Efficient):

Open the Phone app.
Go to the Recents tab.
Tap on the number you want to block.
Select Block/Report spam.
Confirm that you want to block the number.

Utilize Third-Party Apps:

Search the Google Play Store for call-blocking apps. Some popular options include Truecaller and Hiya.
Install the app of your choice.
Follow the app’s instructions to configure call blocking. Many apps allow you to block all numbers not in your contacts.
Grant the app the necessary permissions to access your contacts and call logs.

iPhone: Using “Silence Unknown Callers”

iPhone offers a built-in feature called “Silence Unknown Callers” that effectively blocks calls from numbers not in your contacts.

Open the Settings App:

Locate and tap the Settings app icon on your iPhone.

Navigate to Phone Settings:

Scroll down and tap on Phone.

Enable “Silence Unknown Callers”:

Scroll down to the Call Filtering & Blocking section.
Toggle the switch next to Silence Unknown Callers to the “on” position (green).

Tips

Regularly update your contact list to ensure all important numbers are saved.
Be aware that silencing unknown callers may also block legitimate calls from new businesses or services.
Consider creating a separate ringtone for contacts to easily identify important calls.
Explore the settings of third-party call-blocking apps for more advanced customization options.

Comparing Methods

Feature	Android (Call Screening/Apps)	iPhone (Silence Unknown Callers)
Built-in Option	Limited, depends on device	Yes
Effectiveness	High	High
Customization	High (via apps)	Limited
Potential for Blocking Legitimate Calls	Low, if configured correctly	Moderate
Ease of Use	Moderate	High

Taking Control of Your Phone Calls

By implementing these methods, you can effectively block unwanted calls and ensure you only receive calls from your contacts, giving you greater control over your phone and reducing interruptions.

FAQ

Will blocking a number prevent them from texting me? Yes, blocking a number typically prevents them from both calling and texting you.

What happens to calls from silenced unknown callers on iPhone? They are sent directly to voicemail and displayed in your recent calls list.

Can I unblock a number if I accidentally blocked it? Yes, you can unblock numbers through your phone’s settings or the call-blocking app you are using.

Does “Silence Unknown Callers” block calls from numbers I’ve recently called? No, it typically allows calls from numbers you’ve recently called or that are suggested by Siri.

Are call-blocking apps safe to use? Choose reputable apps with good reviews and carefully review their privacy policies before granting permissions.