You may wish to block a number from calling you on phone because of one reason or the other but the most common ones are:

To stop calls from 3rd party advertising agents who calls your line without mercy. To block calls from people you are owing. To stop calls from your enemies. To stop calls when you are in a meeting or very busy People annoying you with constant calls … And others.

No matter the reason to block calls from a particular phone number, I have written down the codes and ways to block calls on any network in Nigeria and even from other countries of the world. Although some fraudsters use this call blocking service hide away from people they have duped but my intention here is to educate people who their intent is to use it rightly.

Blocking a Number From Calling You

There are several ways to block a number from calling you on MTN, Airtel, Glo and 9mobile and I will show you the best methods that works perfectly like a charm. You can block a contact from calling you using your network call blocking service or doing it directly from your phone, be it Android, iOS or Windows phone. Therefore, you will also learn how to block a number from calling you on Android, iOS or Windows phone. Note that when you block a number (contact), they won’t be able to reach you through calls or text messages again.

How to Block a Number from Calling You on MTN

There are several ways to block a number from calling your MTN line.

Using Truecaller App

To block a number from calling you on MTN follow these rules;

Install Truecaller app. Open it and tap on the three dotted lines at the top right corner.

Tap on settings.

From the options, select “block“.

Now tap the plus ➕ symbol and select “block a number” to add a number to your blocked list.

Once added, the number will not be able to successfully call you again.

NOTE: Truecaller app gives you options to block top spammers, block hidden numbers, block foreign numbers, block numbers not in phone book, block spoofing numbers, block advertising agents and so on. This method can be used to block both international numbers and local numbers. You can also block numbers from sending SMS to you.

Using Call Baring Service

Another method is by using “call barring” service from MTN. To use call baring, change the default barring PIN by dialing 033300000New PIN*Repeat New PIN# Now, to bar all incoming calls (block all numbers from calling your MTN line), dial 35PIN# on your MTN line. However, to cancel call baring, dial 35PIN#. Dial *#35# to know the status of call baring on your MTN line.

Using USSD Code

You can actually block a number from calling you by dialing this USSD code 350000* PHONE NUMBER# and click on SEND. For example: If you want to block this number 08123456789 from calling your line, then type it like this 350000*08123456789# and SEND. Ones you send it, the person won’t be able to reach you again via calls.

How to Unblock a Blocked Number

To unblock a number you have already blocked on MTN, just dial this code on your phone 350000# and SEND and this will cancel every blocked contact on the list.

How to Block a Number from Calling You on Airtel

For Airtel, the best method is to install Truecaller app. Open the app and click on the 3-dotted lines at the top right corner. Select settings and click on “Block“, then click the plus ➕ sign and add the number you want to block from calling you on Airtel. Another method is using USSD Code. To do that simply dial 03330old barring codenew barring codenew barring code#. For instance, if you want to change from the default pin 0000 to 1234, you will dial 03330000012341234#.

How to Block a Number from Calling You on Glo

You can also block numbers on Glo using truecaller but if you want to use a USSD code, follow the instructions below. To block all incoming national calls, dial 35barring code#; while, to deactivate, dial #35barring code#. To bar outgoing calls to national numbers (in Nigeria), dial 33barring code#; and to deactivate, dial #33barring code#. To bar incoming calls when roaming, dial 351barring code#; and to cancel, dial #351barring code#. To bar outgoing calls for international numbers, dial 331barring code#; and to cancel, dial #331barring code#.

Video Guide

The video below will show you how to block a number from calling you on Android.

How to Block a Number from Calling You on 9Mobile

Just as it’s done on other networks, you can also use Truecaller app to block calls from getting to your Glo line. Another method is using USSD code. To block call, dial 35PIN# To cancel, dial #35PIN# and send. Added numbers will not be able to call you again.

How to Block Calls from Third-party Ads Partners

Have you been receiving disturbing unsolicited SMS (messages) from third-party ads partners and wish to stop receiving calls or messages from them? To block calls from third-party MTN partners, activate Do Not Disturb (DND) on your line. To activate DND, SMS “STOP” to 2442.

Universal Code to Block a Number from Calling You

Summary

To block a number with a code, dial 350000The Person’s Phone Number# and click on SEND. To block a particular number from calling you, dial 350000the Person’s Phone Number# and click on SEND. To unblock all the numbers blocked from calling you, dial 350000# and SEND. SEE ALSO: How to Block Your ATM Card if Stolen or Lost This is how to block any number you don’t want to receive call from again.