How to Update the Phone Number on Your NIN (2026)

Most Nigerian readers carry two phone numbers in practice: the line they use day to day, and the line their NIN was registered against. Sometimes those are the same line and updating one is purely cosmetic. Often they are not — the NIN-registered line is a number from 2017 sitting in a drawer SIM, while the daily-driver number is a fresh MTN line opened last year. Updating the NIN-linked number is the way to align identity with the line that actually rings.

The change matters specifically for three downstream behaviours, and naming them is the test of whether you need this modification at all.

• OTP delivery. The NIMC self-service portal sends one-time passwords to the NIN-linked number when you sign in via the UserID-and-OTP route. A bank doing real-time NIN-based verification sometimes does the same. An OTP that goes to a SIM you do not have is an OTP you cannot read.
• USSD retrieval. Dialling *346# returns your NIN only from the SIM linked to that NIN. A reader trying to retrieve their NIN from a fresh SIM gets a "no record found" response that has nothing to do with NIMC and everything to do with which SIM is on the network.
• SIM linkage. Every Nigerian SIM is linked to a NIN at activation. When you change the NIN's phone number, the telco-side link between the old SIM and your NIN does not auto-update either; your new SIM may then need a fresh NIN-SIM link at the telco's portal. Without it, the new line still verifies as unlinked at the network.

If none of those three apply to you — if you simply switched numbers for convenience and have neither lost the old SIM nor needed the new one for OTPs — the modification is optional. Where any of them apply, it is worth the ₦2,000.

NIMC's published requirement for phone-number changes is narrower than for name or DOB. The single document that matters is the police report.

• Police report. NIMC asks for a police report covering the loss, theft, or out-of-service status of the original NIN-linked SIM. The report is filed at a Nigerian Police station — the divisional office where you live is fine. Bring a valid government ID, describe the circumstances (lost SIM, stolen phone, telco-discontinued line), and the desk officer issues a stamped report. Cost is a few hundred naira and the process usually takes the same day.
• The new number itself, already active. NIMC validates the new line by sending an OTP to it; an unactivated SIM cannot receive that OTP and the modification stalls.
• Your existing NIN slip, as the identity anchor for the submission.

What NIMC does not require for a phone-number change is a court affidavit, a newspaper publication, or supporting birth or marriage documents. The change is administrative, not legal. For the heavier modification routes that do require those documents, see how to correct a NIN name and how to change date of birth on NIN.

This is where the phone-number change parts ways from the rest of the modification stack. For name, DOB, address, or email, the portal accepts a submission, reviews the documents, and approves or rejects on the strength of those documents. For phone number, NIMC adds an extra real-time check: an OTP sent to the new line.

1. 1
   Sign in to the self-service portalOpen [selfservicemodification.nimc.gov.ng](https://selfservicemodification.nimc.gov.ng/) on the browser and device you registered the account with. The August 2025 device restriction is particularly awkward here, because the reader changing a phone number sometimes lost the very phone the portal is locked to.
2. 2
   Pick 'Phone Number' as the modification fieldOn the dashboard, select 'Modification' and choose the phone-number flow. The portal displays the current number on file (often with the last few digits masked) and prompts for the new one.
3. 3
   Upload the police reportScan or photograph the stamped police report. PDFs and clear photographs are accepted. The report should reference the lost or replaced SIM and your NIN.
4. 4
   Pay ₦2,000Through Paystack on the portal. Payment clears in a few seconds.
5. 5
   Wait for the OTP to the new numberWithin a few minutes, NIMC sends a one-time password by SMS to the new line you entered. Enter it on the portal to confirm the new line is live and reachable. If the OTP does not arrive, request a resend; if it still does not arrive, the new SIM has a reception or activation problem that needs sorting before the modification can proceed.
6. 6
   NIMC reviews and confirmsOnce the OTP is confirmed and the police report passes review, NIMC updates the record. A confirmation is sent to your registered email. The new number is then the line on file.

The OTP step is the small mechanism that prevents someone from rerouting your NIN to a number they control. It is also the reason you cannot batch this modification — you have to be holding the new SIM, with reception, at the moment you submit.

A small subset of readers hit a particularly difficult version of this modification. The reader who is changing the NIN-linked phone number is, sometimes, changing it precisely because they lost the phone the original NIMC sign-in lived on. The new phone — also not the original — is the device they have today. NIMC's August 2025 device-restriction policy treats that new phone as a stranger to the account, and the sign-in is blocked.

The practical sequence when this happens:

• Try a desktop browser first if the original registration was done on a laptop. The device-restriction binds the account to the specific browser-and-device pair NIMC saw at first sign-in. If the original was a laptop you still have, sign in from that laptop and the lock does not apply.
• If neither original device is available, the account-recovery mechanism is the next move. NIMC's policy allows up to five recovery requests per account; each one is reviewed by NIMC and either restores access or pushes you further into the locked state. Submit the request through the portal's recovery flow and respond to NIMC's verification questions promptly.
• As a last resort, walk into a NIMC enrolment centre. Centres still handle phone-number modifications as exception cases when the portal route is unavailable. Bring the police report, the new SIM, and your existing NIN slip; the desk officer routes the change through internal channels.

If a verifier (bank, telco) is failing your NIN check today because of an outdated phone number, see NIN validation failed for the broader diagnostic — sometimes the fix is on the verifier's side rather than at NIMC.

The corrected slip is the start. Two telco-side steps follow.

• Re-link the SIM at the telco. Each telco (MTN, Airtel, Glo, 9mobile) maintains its own NIN-SIM link separately from NIMC's record. After NIMC updates the NIN-linked number, visit your telco's nearest service centre or use their NIN-SIM portal to re-link the new SIM to your NIN. Without this step, the new SIM may still show as unlinked at network-side checks even though NIMC's record is current.
• Re-test USSD retrieval at *346#. Dial *346# from the new SIM. If the menu returns your NIN, the chain is complete. If it returns a "no record found" response, the telco-side link has not yet propagated; give it 24 hours and retry. See how to check your NIN for the full lookup tree across the four channels.

If you are also updating a bank account or BVN against the new line, sequence those after the NIMC and telco steps are complete. Banks pull from NIMC for the underlying NIN-DOB-name match and from your telco for any SIM-related verification. Both need to be current before a bank update will stick.

NIMC's processing volume in Lagos and Abuja sometimes lags state-capital queues during high-traffic weeks, but phone-number changes are the lightest review type and rarely sit longer than a working week.