How to Block Your MTN SIM Card 2024

How to Block Your MTN SIM Card 2024: Welcome to, your go-to source for straightforward tech solutions. 

How to Block Your MTN SIM Card

Losing your phone or having it stolen can be a stressful experience, but knowing how to quickly block your MTN SIM card can help protect your personal information and prevent unauthorized use of your account. 

See Also:

In this post, we’ll walk you through the simple steps to block your MTN SIM card and provide tips to keep your data safe.

Understanding the Importance of Blocking Your SIM Card

Your SIM card contains valuable personal and financial information, including contacts, messages, and banking details. 

If your phone is lost or stolen, blocking your SIM card promptly can prevent unauthorized access to this sensitive data and protect you from potential fraud or identity theft. 

By taking proactive steps to block your SIM card, you can minimize the risk of misuse and safeguard your privacy.

How to Block Your MTN SIM Card When Phone is Stolen

In this post, I will show you three ways you can use to block your MTN line;

  1. Via USSD Code
  2. By calling the MTN Customer care
  3. By visiting MTN Service center

Code to Block MTN SIM Card

The code to block MTN SIM card is *123*7*4#. To block MTN line using USSD code, follow the steps below;

  1. Open your call app and dial *123*7*4#.
  2. Enter the MTN number you want to block
  3. Enter your 4-digit SIM PIN. This is the PIN that you set when you activate your SIM card. If you forgot your SIM PIN, you can call MTN customer care on 180 or visit any MTN service center to reset it.
  4. Choose whether you want to lock or unlock your SIM card. Press 1 to lock your SIM card or press 2 to unlock your SIM card.
  5. Confirm your choice by pressing 1 again.
  6. You will receive a confirmation message that your SIM card has been locked or unlocked successfully.

How to Block MTN Line From Another Phone

Another method is blocking MTN SIM card from another phone by calling the MTN Customer Care!

To block your MTN line from another phone, follow the steps below;

  1. Open the Call app on your mobile phone
  2. Dial 180 or +23480310180 from any phone with MTN Line
  3. Follow the automated prompts until you were able to talk to the MTN representative 
  4. Tell the representative that you lost your phone/SIM and you wish to block your line or maybe you noticed fraudulent activities on your MTN line, tell them the problem
  5. They will ask you some personal questions like say three contacts saved on the MTN line, the last time you recharge and how much you recharged, your DOB, your mother’s name, etc.
  6. If you are able to answer the questions, they will block the line.

Simple as that! 

How to Block MTN SIM Card by Visiting MTN Service Center

If you’re unable to contact MTN customer service or you don’t know how to do it using USSD code, you can visit any MTN service center or store to request assistance in blocking your SIM card. 

Provide your personal information and any necessary identification documents to verify your identity and initiate the blocking process.

Frequently Asked Questions – FAQs

Can I block my MTN SIM card?

Yes, you can block a stolen MTN SIM card by simply dialing 180 and talking to an MTN representative.

How can I deactivate a SIM card?

To deactivate a SIM card, you need to contact your service provider and ask them to deactivate the SIM card. You may be asked to provide some identification details to verify your identity.

Can you deactivate a prepaid SIM card?

Your Pre-Paid SIM card will be automatically deactivated 6 months after the expiry date of your last recharge.

How do I know if my SIM card is deactivated?

Try Making a Call or Sending a Text: This is the most straightforward method. Try to make a call or send a text message. If the call goes through or the message is sent, then the SIM card is active. If not, it could be deactivated, or there could be another issue, like lack of signal or an issue with the device itself.

TeezabTech Conclusion

In conclusion, knowing how to block your MTN SIM card is essential for protecting your personal information and preventing unauthorized access to your account in the event of loss or theft. 

By following the simple steps outlined in this guide, you can quickly and effectively block your SIM card and minimize the risk of misuse. 

Remember to contact MTN customer service, visit an MTN service center, or use MTN blocking USSD code to initiate the blocking process. 

Stay safe and secure with for more tech tips and insights.

If you have any questions regarding this post simply leave us a comment in the comment box below and we will get back to you as soon as possible. Thanks for stopping by! 

Recommended Posts:

Leave a Comment

Your email address will not be published. Required fields are marked *

Scroll to Top