How to Block Your MTN SIM Card

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How to Block Your SIM Card

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It is possible that losing your phone or having it stolen could be a terrible experience; however, being aware of how to swiftly deactivate your SIM card will assist in protecting your personal information and preventing unauthorised use of your account.

In this article, we will guide you through the simple steps necessary to disable your MTN SIM card and present you with some helpful recommendations to ensure the safety of your information.

Understanding the Importance of Blocking Your SIM Card

Your mobile phone's SIM card stores valuable information about your personal life and financial situation, such as your contacts, messages, and banking information.

In the event that your mobile device is lost or stolen, disabling your SIM card as soon as possible might prevent unauthorised access to these critical statistics and protect you from the possibility of being a victim of identity theft or fraud.

You can ensure that your privacy is protected and limit the likelihood that your SIM card will be misused if you take preventative measures to block it.

How to Block Your MTN SIM Card When Phone is Stolen

In this post, I will display three methods you can use to block your MTN line:

  1. Via USSD Code
  2. By calling MTN Customer Care,
  3. By journeying MTN Service middle

Code to Block MTN SIM Card

The code for the MTN SIM card is *123*7*4#. To block MTN line using USSD code, observe the steps underneath:

  1. Open your name app and dial *123*7*4#.
  2. Enter the MTN range you need to block
  3. Enter your 4-digit SIM PIN. This is the PIN that you set when you turn off your SIM card. If you forgot your SIM PIN, you can name MTN patron care on 180 or go to any MTN carrier middle to reset it.
  4. Choose whether you need to lock or unlock your SIM card. Press 1 to fasten your SIM card or press 2 to unencumber your SIM card.
  5. Confirm your preference by means of urgent 1 once more.
  6. You will receive a confirmation message that your SIM card has been locked or unlocked effectively.

How to Block MTN Line From Another Phone

Another approach is to block the MTN SIM card from any other telephone by calling MTN Customer Care!

To block your MTN line from every other cellphone, comply with the steps below:

  1. Open the Call app in your cellular phone
  2. Dial a hundred and eighty or +23480310180 from any cellphone with MTN Line
  3. Follow the automated prompts until you are able to talk to the MTN consultant
  4. Tell the representative that you misplaced your cellphone/SIM and you want to dam your line or maybe you observed fraudulent activities for your MTN line. Tell them the problem
  5. They will ask you some personal questions, like, say, three contacts stored on the MTN line, the remaining time you recharged and what sort of recharged, your DOB, your mother's name, and so forth.
  6. If you're capable of answering the questions, they will block the line.

Simple as that!

How to Block MTN SIM Card via Visiting MTN Service Centre

If you're unable to touch MTN customer service or don't recognise a way to do it the use of USSD code, you may go to any MTN provider centre or shop to request help in blocking your SIM card.

Provide your non-public records and any important identification documents to confirm your identity and initiate the blockading.

Frequently Asked Questions (FAQs)

Can I block my MTN SIM card?

Yes, you may block a stolen MTN SIM card by definitely dialling one hundred eighty and speaking to an MTN representative.

How can I deactivate a SIM card?

To deactivate a SIM card, you need to touch your carrier provider and ask them to deactivate the card. You can be asked to provide some identification information to confirm your identity.

Can you deactivate a pay-as-you go SIM card?

Your pre-paid SIM card can be robotically deactivated 6 months after the expiration date of your remaining recharge.

How do I recognise if my SIM card is deactivated?

Try creating a call or sending a text. This is the most truthful technique. Try to make a name or send a text message. If the call goes through or the message is dispatched, then the SIM card is active. If it is no longer active, it can be deactivated, or there could be another difficulty, like a lack of signal or an issue with the device itself.


If you want to secure your private information and prevent unauthorised access to your account in the event that your MTN SIM card is lost or stolen, it is essential that you have a working knowledge of how to block your MTN.

You will be able to block your SIM card very quickly and effectively if you follow the straightforward methods that are outlined in this manual. This will also reduce the likelihood that it will be misused.

It is important to remember that in order to begin the blocking system, you must visit an MTN provider centre, call MTN customer service, or use the MTN blocking USSD code.

With FinancialExpert NG, you can maintain your safety and stability while gaining access to more technological suggestions and insights.

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