Phone or SIM Stolen in Nigeria? What to Do in the First Hour: Block Your SIM, Protect Your Bank Apps, Report the IMEI and Get a Replacement (2026)

Losing a phone in Nigeria is not only about the handset. Your SIM is the key to your bank app, your mobile money wallet, your WhatsApp and your email. Thieves know this, and the most damaging losses usually happen in the first hour, before the owner has blocked anything.

This guide follows the steps the Nigerian Communications Commission (NCC) recommends for a lost or stolen handset and adds the banking steps that matter most today. Save it, or share it with someone who would need it in a hurry.

The First-Hour Checklist

Step 1: Block Your SIM Immediately

The NCC’s first advice is to call your own number from another phone in case someone honest has found it, and then to contact your service provider and ask them to block your SIM and handset. If it is clear the phone was stolen, skip straight to blocking.

Call your network’s customer care line from a friend’s phone:

• MTN: 180
• Airtel: 111
• Glo: 121
• T2 (formerly 9mobile): 200

Be ready to confirm your identity: your full name, your NIN, recent recharges or numbers you call often. Ask for a reference number and note the exact time you reported.

That time matters. In its Quality of Service Business Rules, issued in August 2024, the NCC told networks to block stolen SIMs within five minutes of a report, and said “any further usage should not be chargeable to the consumer from the moment the report is filed.” If airtime or data is used after you reported, you can ask for it back.

Step 2: Lock Your Bank and Mobile Money

This is the step that protects your money. Most bank apps send one-time passwords (OTPs) by SMS, and USSD banking works with just the SIM. Once your SIM is blocked, a thief cannot receive new codes, but they may already be in an app that is logged in.

• Call your bank’s customer care line and ask them to place a temporary block (post-no-debit) on your account and to block your cards and USSD banking.
• Do the same for OPay, PalmPay, Moniepoint, Kuda or any wallet linked to your number.
• If your bank offers an emergency USSD code to block your account, you can use it from another phone with your account details. Ask your bank in advance what it is.
• Check your statement for any transfers made after the theft and report them to the bank in writing straight away.

Step 3: Secure Your Online Accounts

The NCC’s advice is to log out of social media, email and online banking and to change the passwords for accounts that could be reached through the phone.

1. Email first: from a computer, sign in to your Gmail or other email, use “sign out of all devices” and change the password. Your email can reset almost everything else.
2. WhatsApp: once your new SIM is active, register WhatsApp on a new phone with your number. This logs the stolen phone out.
3. Facebook, Instagram, X and TikTok: sign out of other sessions and change passwords.
4. Find your phone: use Google’s Find My Device or Apple’s Find My from another device to lock or erase the phone remotely.
5. Warn your contacts that anyone messaging from your number or accounts asking for money is not you.

Step 4: Report the Phone’s IMEI

Every phone has a unique 15-digit IMEI number. The NCC advises giving it to your network if you have it written down, so the handset, not just the SIM, can be blocked.

You can find your IMEI in several places: on the phone’s box, on your purchase receipt, by dialling *#06# (do this now on your current phone and save the number), or in your Google or Apple account’s device list.

The NCC is rolling out a national Device Management System that uses IMEIs to identify and block stolen, cloned and fake phones across all networks. As it is implemented, a reported stolen phone becomes far less useful to a thief. You can already check whether a phone you are buying is approved; see our guide to the NCC code for checking approved phones.

Step 5: File a Police Report

Go to the police station nearest to where the phone was stolen and report it. Ask for a written extract or report with a reference number. You may need it for insurance, for your network, or if the phone is later recovered. Include the phone’s make, model, colour and IMEI.

Step 6: Replace Your SIM and Keep Your Number

To get your number back, visit your network’s service centre in person. SIM replacement in Nigeria is linked to your National Identification Number (NIN), so take:

• Your NIN slip or a valid ID that shows your NIN
• A valid photo ID
• The police report or an affidavit, if the office asks for one

The network will verify your identity against the NIMC database and capture your biometrics before issuing the new SIM. Once it is active, restore WhatsApp and your bank apps, and ask your bank to lift any temporary block.

How to Prepare Before It Happens

• Write down your IMEI (dial *#06#) and keep it with your important documents.
• Set a screen lock and a SIM PIN, so the SIM cannot be used in another phone without the PIN.
• Turn on two-step verification in WhatsApp (Settings, Account) and in your email.
• Save your bank’s customer care number somewhere other than your phone.
• Turn on Find My Device (Android) or Find My (iPhone).

Frequently Asked Questions

How do I block my MTN SIM if my phone is stolen?

Call 180 from another phone and ask MTN to block the SIM. Airtel is 111, Glo 121 and T2 200.

How fast must a network block a stolen SIM?

Within five minutes of your report, under the NCC’s Quality of Service Business Rules.

Will I be charged for calls or data used after the theft?

Not after you report it. The NCC says usage after the report is filed should not be charged to the consumer.

How do I find my phone’s IMEI?

Dial *#06#, check the phone’s box or receipt, or look in your Google or Apple account’s device list.

Can I keep my number after my SIM is stolen?

Yes. Visit your network’s service centre with your NIN and ID to get a replacement SIM on the same number.

Should I report a stolen phone to the police?

Yes. The NCC lists a police report among its six steps, and you may need it for insurance or SIM replacement.

Sources

1. Nigerian Communications Commission, Consumer Affairs Bureau – “Six things to do when your handset is stolen or lost”, consumer.ncc.gov.ng, checked 8 November 2026
2. Nigerian Communications Commission – Quality of Service Business Rules, August 2024 (blocking of reported stolen SIMs within five minutes)
3. Nigerian Communications Commission – Device Management System for IMEI-based blocking of stolen, cloned and substandard devices, 2025

Last updated: 8 November 2026 · NaijaSabi Tech Desk.