CBN Tightens Security: BVN Phone Number Can Only Be Changed Once

Starting May 1, 2026, a major change is coming to Nigeria’s banking system — and it could affect how you access your money.

The Central Bank of Nigeria (CBN) has introduced a new rule: you can only change the phone number linked to your Bank Verification Number (BVN) once in your lifetime. After that, it cannot be changed again.

This is not a small update. It affects millions of Nigerians and their interactions with their bank accounts every day.

Your BVN phone number is more important than most people realize. It is not just for receiving messages. It is how your bank confirms your identity. It is used to send transaction alerts, generate one-time passwords, and help you recover your account if you forget your login details.

In simple terms, if you lose access to that phone number, you could struggle to access your bank account.

So why is the CBN making this change?

The main reason is fraud.

For years, criminals have taken advantage of how easy it was to change BVN-linked phone numbers. A common method involves SIM swap fraud. Someone gains control of your phone number, contacts your bank pretending to be you, and requests a number change. Once that happens, they can reset your banking details and move your money.

This type of fraud is not rare. Thousands of cases have been recorded, many involving compromised phone numbers.

By limiting phone number changes to a single change, the CBN is trying to block this method entirely.

On paper, this makes sense. But in real life, it raises serious concerns.

Phones get stolen. SIM cards can stop working. Network providers sometimes recycle phone numbers and give them to new users. People also switch networks for better service or pricing.

None of these situations involves fraud, but they could still cause problems under this new rule.

If you have already used your one allowed change and later lose access to your number, there is currently no clear solution. That uncertainty is what worries many people.

There are also legal concerns. Nigerian law allows individuals to correct their personal data when needed. A rule that limits updates to just once could conflict with that right, especially if your number becomes inaccessible in the future.

Even more concerning, there is no clear guidance yet on what happens if your number is lost, stolen, or wrongly linked after your one update has been used.

So what should you do now?

Act before the deadline.

Start by checking the phone number linked to your BVN. Make sure it is active, accessible, and in your possession. If you cannot receive calls or messages on that number, you need to update it immediately.

You can do this by visiting your bank with a valid ID. Some banks may also allow updates through USSD codes or their mobile apps, depending on their system.

It is also important to ensure that your SIM registration matches your BVN details. If there is a mismatch between your name on your SIM and your BVN, your account could face restrictions. Visit your network provider to confirm everything is correct.

The key point is simple.

Do not wait.

Once May 1, 2026, passes, you will have only one chance for the rest of your life to change your BVN phone number.

This is one of the biggest shifts in Nigeria’s banking system in recent years. It is designed to protect your money, but it also means you need to be more careful than ever.

Take a few minutes today to check your details. It could save you from serious problems later.