In response to the ongoing National Identification Number (NIN)-SIM harmonization exercise, Nigerian telecommunications companies have outlined clear procedures to assist subscribers in unblocking their SIM cards.

This initiative, designed to strengthen the integrity of the national SIM registration database, has resulted in temporary service disruptions for numerous users.

To aid impacted customers, telecommunications companies outlined a step-by-step process in a formal statement issued on Monday to reestablish connectivity.

1. Airtel: Dial *121# and enter your eleven-digit NIN. A confirmation message will indicate that your Airtel SIM card has been successfully unbarred.

2. 9mobile (EMTS): Dial *200*8#.

3. Glo: Dial 109 followed by your NIN number (e.g., *109*12345678901#) and follow the prompts to submit your NIN.

4. MTN: Visit [nin.mtn.ng](http://nin.mtn.ng) to check NIN status. If not linked, proceed to link it. An OTP and NIN will be required. Once linked, your line will be automatically unbarred.

5. Smile: Send your NIN to customercare@smile.com.ng or call 07020444444. After providing consent and verifying your NIN, your line will be unbarred.

6. Spectranet: Call 8002345678 or email care@spectranet.com.ng to submit your NIN. KYC verification at a Spectranet store is required. You can also submit your NIN online but must complete KYC at a Spectranet store.

7. Ntel: Visit any Ntel store with your NIN. Your fingerprint will be used to verify your existing KYC profile. Upon verification and consent, your line will be updated and unbarred.