How to Link NIN to MTN in Nigeria

If you’ve been wondering how to link NIN to MTN in Nigeria, especially after receiving a message threatening to block your SIM, you’re not alone. Many MTN users across the country have recently received notifications requesting them to connect their MTN line to their National Identification Number (NIN).

This step is now mandatory, and failure to comply may result in call and data restrictions. Whether you’ve linked it in the past or not, this guide explains how to confirm your line’s status and how to link NIN to MTN across multiple methods, including online, through an app, via USSD, and by SMS.

Why You Must Link NIN to MTN Line

The Nigerian government made it compulsory to link your NIN to your phone number to enhance user identification and combat SIM-related crimes. The NIN, assigned by the National Identity Management Commission (NIMC), contains 11 digits unique to each citizen. It connects your biometric data and identity to official records, and once assigned, it remains permanent—even after death.

Starting from 2020, telecom providers like MTN were instructed to enforce NIN-SIM linkage. The aim is to protect the digital ecosystem and reduce identity theft, impersonation, and mobile fraud. Without linking your NIN to your MTN line, you risk being barred from making or receiving calls, using mobile data, or accessing other MTN services.

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How to Confirm Your MTN Line’s NIN Status

Before you proceed, it’s useful to find out whether your MTN line is already connected to your NIN. To do that:

Visit https://nin.mtn.ng/nin/status.
Enter your MTN phone number.
Wait for the OTP (One-Time Password) sent to your phone and input it correctly.
You will then see your NIN linking status.

If your number is already linked, you’ll receive confirmation immediately. If not, or if you’re only partially verified, you may be given three verification options on the portal. But if those options do not appear, keep reading—there are still alternative methods for how to link NIN to MTN in Nigeria.

How to Link NIN to MTN Using USSD

For those who prefer a quick method that doesn’t require internet access, the USSD method works well—even if your number is already blocked.

Steps to Link via USSD

Copy your 11-digit NIN from your NIN slip or retrieve it by dialing *346#.
Dial *996# on your MTN line.
Select the option labeled “NIN Linking.”
From the new menu, choose to input your NIN.
Enter your NIN and confirm the submission.
Wait for confirmation messages from MTN.

This method is also how to link NIN to MTN after being blocked. It often works even if your line has been restricted.

How to Link NIN to MTN Line Online

If you’re eligible for online self-service, the MTN website allows users to link their NIN directly without visiting a store.

Online Linking Process

Head to https://ninlinking.mtn.ng/.
Input your MTN phone number and Virtual NIN (VNIN).
Provide your email address.
Click next and verify using the OTP sent to your phone.
Submit your NIN and wait for the confirmation page.

This is one of the simplest ways for how to link NIN to MTN line online, provided your phone number qualifies for self-verification.

How to Link NIN to MTN with App

The MyMTN mobile application offers another reliable option. You’ll need an internet connection and an active MTN SIM to use this method.

Steps Using the MyMTN App

Download and install the MyMTN App from Google Play Store or Apple App Store.
Open the app and log in with your MTN number.
Go to your profile section and look for NIN linking.
Input your NIN and submit.
You will get a confirmation once the linking is complete.

This method is suitable for users looking for how to link NIN to MTN with the app in just a few minutes.

How to Link NIN to MTN via SMS

Although less common, MTN also allows NIN linking via SMS for specific use cases. Some users may find this useful when internet access is limited.

SMS Linking Method

Open your phone’s messaging app.
Type your 11-digit NIN.
Send it to 996.
You’ll receive a message confirming that your request is being processed.

This method is convenient and serves users wondering how to link NIN to MTN via SMS, especially in low-connectivity areas.

Linking Multiple MTN Lines to One NIN

MTN permits you to link up to seven different MTN lines to a single NIN. If you’re facing difficulties while trying to link another line, it may be due to exceeding this limit. In such cases, visiting an MTN service center might be necessary.

What to Do When Errors Occur

Invalid NIN Error

If you receive an “Invalid NIN” error, recheck your NIN. Make sure you’ve entered all digits correctly. If the error persists, dial *346# again or contact NIMC.

Network Busy

This is usually temporary. Try again later during less congested hours, such as early mornings.

NIN Already in Use

If the system notifies you that your NIN is already linked to another number, you’ll need to visit the nearest MTN outlet for manual resolution.

Visiting MTN Service Centers

For issues that cannot be fixed online, through USSD, or with the app, go to the nearest MTN office. Bring your NIN slip, a valid ID card, and your MTN SIM.

Request assistance for NIN linking.
Follow the instructions provided by the customer care staff.
You may be required to verify your identity with biometrics.

This method is especially useful for resolving failed self-linking attempts or blocked SIM cards.

Comparing NIN Linking Methods

Method	Convenience	Duration	Requirements
USSD Code (*996#)	Very Easy	Under 5 mins	MTN SIM, NIN
MyMTN App	Easy	Around 10 mins	Data, Smartphone
MTN Website	Moderate	10 mins	Data, VNIN, Email
Service Center	Least Convenient	1–2 hours	Transport, ID

Final Notes

Linking your NIN to your MTN line is free, and in most cases, confirmation is received within minutes of completing the process. Whether you’ve been blocked or are simply unsure of your linking status, following any of the above steps ensures compliance and uninterrupted service.