How to Block Incoming Calls

Don’t want to receive a phone call from someone? Want to block phone service consultants? The call blocking feature offered by many telecom carriers allows users to block incoming calls from specific phone numbers. Besides the basic features from these carriers, the following article will give you different ways to effectively block incoming calls.

Table of Contents

Block specific numbers on landlines

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Contact the telecommunications carrier you are using. Ask the customer service agent if call barring for desktops is available. Note: The method of blocking incoming calls on landline phones below is applicable in the US. In Vietnam, contact your telecommunications service provider’s switchboard for more details.

If call barring is available, request it to be enabled on your landline. A monthly fee may be required to use this feature. ^{[1] X Research Source}
Most telecom carriers offer multiple incoming call blocking features, although blocking specific numbers may not apply. ^{[2] X Research Source}

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Press the *60 button on your phone. When picking up the phone, wait until you hear a notification tone and then press *60. This will activate the incoming call barring feature on your phone.

Listen to the autoresponder recording to see if incoming call blocking is enabled and how many numbers have been blocked from your contacts. Listen to the audio guide to see how to turn call barring on in case it isn’t already on. For most telecom carriers, this feature can be turned on by pressing button number 3.

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Add the phone number to block. This phone number will stay in the blocked folder until it is manually deleted or the incoming call barring feature is turned off.

Follow the instructions of the autoresponder recording to add the phone number to the list of blocked numbers. Each carrier will have different specific announcements, but often these messages involve pressing a button on the keyboard to add a number to block.
Enter the first area code and phone number you want to block and then press the # button. Repeat this step until all the phone numbers to be blocked have been entered.
Some carriers limit the number of phone numbers you can block (from 6 to 12).

Block anonymous calls on landlines

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Press the *77 button on the phone after hearing the notification tone. This will enable anonymous call blocking on the landline. Note that this service is only available if you have the caller’s ID. This is a feature of landline phones offered in the US. For Vietnam, call the operator’s switchboard for more details. ^{[4] X Research Sources}

Hear a confirmation tone or notification that the feature has been activated.
Anonymous callers will now hear an auto-answer recording that you don’t accept anonymous calls. ^{[5] X Research Source} They will be suggested to turn off anonymity and then may call you back.
Note that only people listed as “Anonymous”, “Private” or “Unknown” will be blocked from calling you. This feature does not apply to people who anonymize but do not block their caller ID.

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Press the *87 button in the dial tone to disable this feature. If you want to allow anonymous phone numbers and phone numbers to call you back, press the *87 button to disable this feature.

You’ll hear a confirmation or notification that the feature has been disabled. Now anonymous or previously blocked numbers will be able to contact you again.

Block incoming calls on mobile phones

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Block a specific number. Select the menu on your phone, then select “Settings”.

Select “Phone” or “Phone Settings” and select “Calls” or “Incoming Calls”. Tap “Blocked Callers”, “Blacklist”, “Unwanted Calls”, or another similarly named options menu. Your contact list or contacts will appear; Select the name of the phone number you want to block or manually enter the number you want to block. Press “OK” or “Block” to confirm.
The blocked number will no longer be able to contact you and your phone will not ring when the number calls. Callers will hear a “busy” message or a message saying that you are not accepting calls from their phone number.

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Download the Call Filter application on your phone using Android software. This is a free app available from your phone’s Play Store and offers the option to block both anonymous and specific numbers.

Select the Play Store item on your phone and search for “Call Filter” on the search bar. Download this application to your device. After opening this application, the folder “Block Unknown Calls” (Block Unknown Calls) will appear on the screen. This folder will prevent private phone numbers, pay phone numbers and unknown numbers from contacting your phone number. ^{[6] X Research Sources}
You can also select a folder next to the “Contrp Specified Numbers” folder, which will block phone numbers that have been manually entered by the user. Below this folder is a gray icon, the “Call Filter” box with a number in parentheses can be clicked. Click this box to enter the number to block. Blocked phone numbers will not appear in the gray box. ^{[7] X Research Resources} Similarly, you can click “Add the last incoming number” to block the most recent number that called you.
Call blocking apps are not 100% effective and may still allow telemarketers to contact your number.
In addition to phones using Android software, phones using other software can still use completely similar features from other applications.

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Block calls with the Google Voice app. Google Voice is a free phone service that offers many features.

Visit the registration website: https://services.google.com/fb/forms/googlevoiceinvite/. You will be prompted to enter your name and e-mail address. Since this is an invitation-by-invitation service, you’ll have to wait until Google Voice sends you an invitation before you can use the service’s features. Please be patient; Although the website advertises that the waiting time is short, in reality you will have to wait a few days. ^{[8] X Research Sources}
Follow the instructions in the email to sign up for an account.
Once you’ve created your account, sign in to your Google Voice account. Find the call or voicemail from the person you want to block and select the check box next to the call or voicemail. Click the “More” link below the call or voicemail. Select “Block Caller”. ^{[9] X Research Source}
This feature works on all phones because it is linked to a Google account and not a specific phone.

Register for National Do Not Call service

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Type www.donotcall.gov into your web browser. Press enter, then click the icon that says “Register a Phone Number”.

This service is regulated by the Federal Trade Commission and is designed to block most telemarketing calls in the US.
Instead of entering a phone number that needs to be selected, you need to enter your own phone number so that phone consultants will be barred from contacting you.
Don’t be discouraged if you still receive calls a few days after signing up. After signing up, it takes 31 days for the service to go live. ^{[10] X Research Source}

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Enter the phone number you want to register. Also include an active email address so you can confirm your request.

You can enter up to 3 phone numbers to subscribe to the Do Not Call list.
Double check the phone number you entered. Make sure you don’t enter the wrong number or miss any number.
Make sure you have access to the email address you entered. You will receive a confirmation email that you must click on to complete the registration.

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Registration confirmation. Open the email account you entered on the registration form and search for the email the website sent to.

Make sure you click the confirmation link in the email within 72 hours of signing up. ^{[11] X Trusted Source Federal Trade Commission Go to Source} This link will no longer be valid after 72 hours. If you do not complete the link confirmation within 72 hours, you will need to go through all the steps to re-register.
Remember that subscribing to this list can only block marketing calls, offering goods and services. You may still receive calls from political organizations, charities, telephone investigators, and companies from which you purchased the product. If you want to block these calls, ask the individuals or companies not to call you or put your name on the do not call list, this is something they need to respect. ^{[12] X Research Source}
If you are still receiving the marketing call after 31 days, you can file a complaint on the website where you previously signed up for the service. Click the icon on the far right of the “Register a Phone Number” section.

Steps

Block specific numbers on landlines

Block anonymous calls on landlines

Block incoming calls on mobile phones

Register for National Do Not Call service

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