This wikiHow teaches you how to block calls from anonymous numbers on your iPhone or Android. You can do this by using Do Not Disturb on your iPhone, or by changing call settings on your Android if you have a Samsung phone. If you don't have a Samsung phone, you can download an app called "Should I Answer?" to block incoming unknown calls on Android. Unfortunately, there isn't an app or a setting available on iPhone that will only block incoming private, unknown, or restricted calls.

Method 1
Method 1 of 3:

On iPhone

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    Tap Allow Calls From. This option is near the bottom of the screen.
  5. 5
    Tap All Contacts. Doing so will select your entire contacts list as the exception to Do Not Disturb. You will no longer receive calls from people who aren't saved in your Contacts app.
    • This method blocks calls from any numbers that aren't saved in your Contacts app, meaning that you might miss out on a work- or appointment-based call.
    • Do Not Disturb also prevents other app notifications (e.g., text messages, email, social media) from showing up as alerts.
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Method 2
Method 2 of 3:

On Samsung Galaxy

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    Make sure that you have a Samsung phone. Samsung phones are the only Androids that have an anonymous caller rejection setting.[1]
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    Open the Phone app. Tap the phone-shaped app on your Android's main screen.
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    Tap . It's in the top-right corner of the screen. A drop-down menu will appear.
  4. 4
    Tap Settings. You'll find this near the bottom of the drop-down menu.
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    Tap Block numbers. It's in the middle of the menu. This will open the call-blocking settings.
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Method 3
Method 3 of 3:

Using Should I Answer on Android

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    Open Should I Answer. Tap OPEN on the right side of the Google Play Store page, or tap the Should I Answer app icon in your Android's App Drawer.
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    Tap CONTINUE twice. Both CONTINUE options are at the bottom of the screen. Doing so will take you to the main page.
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    Tap the SETTINGS tab. It's at the top of the main Should I Answer page.
  5. 5
    Scroll down to the "Block INCOMING calls from" section. This area is near the bottom of the page.
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Community Q&A

  • Question
    We are trying to trace an ex who uses restricted number calling to obtain proof to get an injunction. Will this TrapCall app work to reveal their cell phone number?
    Community Answer
    Community Answer
    Yes, TrapCall reveals blocked numbers.
  • Question
    How can I stop getting blocked calls on my landline phone?
    Community Answer
    Community Answer
    You can use PhoneTray software (installed on your PC) to prevent blocked calls from getting through on a landline. It costs around $30.
  • Question
    How do I get rid of an unknown number on Whatsapp?
    Community Answer
    Community Answer
    Go onto recent calls and select, Clear Recent. The number should now be gone.
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About This Article

Jack Lloyd
Written by:
wikiHow Technology Writer
This article was co-authored by wikiHow staff writer, Jack Lloyd. Jack Lloyd is a Technology Writer and Editor for wikiHow. He has over two years of experience writing and editing technology-related articles. He is technology enthusiast and an English teacher. This article has been viewed 1,500,890 times.
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Co-authors: 21
Updated: March 28, 2019
Views: 1,500,890
Article SummaryX

1. Open Settings.
2. Tap Do Not Disturb.
3. Toggle on "Do Not Disturb" mode.
4. Tap Allow Calls From.
5. Tap All Contacts.

Android:
1. Open Phone.
2. Tap the three-dot menu.
3. Tap Settings.
4. Tap Block numbers.
5. Toggle on "Block anonymous calls."

Did this summary help you?
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