The Federal Government is still enforcing the NIN–SIM linkage policy in 2026, which means any SIM card that is not linked to a National Identity Number (NIN) may be blocked at any time. To avoid losing access to your number, you must link your NIN to your SIM.

In this updated 2026 guide, we show you how to link NIN to MTN, Airtel, GLO, and 9mobile using your phone.

If you also need to update your NIN information, see:
👉 How to Edit or Modify Your National ID Card Data

What Is NIN?

The National Identity Number (NIN) is an 11-digit unique number assigned to every Nigerian who has registered with NIMC for the National ID Card.

The Nigerian Communications Commission (NCC) requires all mobile users to submit their NIN or risk line disconnection.

How to Check if Your NIN is Already Linked to Your SIM

Before linking, you can confirm whether your NIN is already attached to your phone number.

✔ Method (Works for All Networks)

Dial:

*346#

If your line is linked, your 11-digit NIN will appear on your screen.

If nothing displays, it means your NIN is not yet linked.

How to Register for NIN (If You Don’t Have One Yet)

To enroll for NIN:

1. Fill the NIMC Pre-Enrollment Form online.
2. Enter accurate personal details.
3. Print the Pre-Enrollment Slip.
4. Visit any NIMC office or accredited NIN enrollment center.
5. Submit your required documents.
6. Do biometric capturing.
7. Collect your NIN Slip while waiting for your permanent card.

More details:
👉 Complete Guide to NIN Registration in Nigeria

How to Link NIN to MTN

✔ Method 1: MTN NIN Portal

Visit: https://ninlinking.mtn.ng/
Then:

1. Select NIN
2. Enter your MTN phone number
3. Enter your 11-digit NIN
4. Click Next
5. Enter the OTP sent to your line
6. Click Validate

You will receive a confirmation SMS once linked.

✔ Method 2: MTN Short Code

Dial:

*785#

Enter your 11-digit NIN.

You will receive a confirmation message.

How to Link NIN to GLO in 2026

✔ SMS Method

Send this message to 109:

UpdateNIN [NIN] [First Name] [Last Name]

Example:
UpdateNIN 83466578976 Ahmed Sani → Send to 109

How to Link NIN to Airtel in 2026

Dial:

*121*1#

Enter your 11-digit NIN.
A confirmation SMS will follow.

How to Link NIN to 9mobile in 2026

1. Visit: https://9mobile.com.ng/nin
2. Click “Verify and Link Your NIN Now”
3. Enter your mobile number and click Next
4. Enter the OTP sent via SMS
5. Click Next to submit

Important Notes

• Linking NIN to SIM is mandatory for all Nigerians.
• Unlinked numbers may be blocked without notice.
• Always ensure your NIN details match your SIM registration details.
• Keep your NIN Slip and tracking number safe.