This post explains how to block your First Bank Account Number with USSD Code from your phone and another phone in case of an emergency such as if your phone is stolen.

How to Block First Bank Account Number with USSD Code:

*894*911# is the First Bank USSD code to block the account number. Simply dial the code on a mobile phone and follow the on-screen prompts to enter your USSD 5-digit PIN. This is especially helpful if you have lost your mobile phone.

This Firstbank account blocking USSD code *894*911# works on all major mobile networks in Nigeria: Mtn, Glo, 9 mobile and Airtel.

Alternatively, you could contact First Bank customer care to block your account on its social page or through a call.

Code to block First Bank Account from Another Phone

To block your First bank account from another phone, *894*911# and follow the on-screen prompts to deactivate. This will stop someone from using the USSD code to perform transactions on your First Bank account such as transferring money or airtime.