Losing your phone can be stressful, especially if it is connected to your bank accounts. Therefore, knowing how to block your bank account when your phone is stolen is critical to prevent unauthorized access and protect your funds.
This guide provides USSD codes for all major banks in Nigeria, plus extra tips to keep your money safe immediately.
Why You Must Block Your Bank Account When Your Phone is Stolen
Thieves can:
-
Transfer money via USSD banking
-
Buy airtime or data using linked accounts
-
Access mobile banking apps and SMS alerts
Learning how to perform this vital operation ensures your money stays secure until you recover your device or replace your SIM card.
USSD Codes to Block Your Bank Account in Nigeria
Here are the official USSD short codes for Nigerian banks:
-
Access Bank:
*901*911# -
UBA:
*919*911# -
GTBank:
*737*51*74# -
Zenith Bank:
*966*911# -
First Bank:
*894*911# -
Fidelity Bank:
*770*911# -
Union Bank:
*826*6# -
Keystone Bank:
*7111*911# -
Sterling Bank:
*822*911# -
Polaris Bank:
*833*4# -
Wema Bank (ALAT):
*945*911# -
Unity Bank:
*7799*9*phone number# - Providus:
*833*13*phone number#
-
FCMB:
*329*911# -
Standard Chartered:
*977*911# -
Optimus Bank:
*930*911# -
Parallex Bank:
*1242*911# -
Stanbic IBTC:
*909*1*911# - Titan Trust:
*922*102*Account Number#
Note: You can use these codes from any phone or SIM card, even if your own device is missing.
Other Ways
-
Call your bank’s customer service hotline immediately.
-
Visit the nearest branch with valid ID to freeze your account.
-
Use your mobile banking app if still logged in on another device.
FAQs
1. Can I unblock my account later?
Yes, by visiting your bank branch with valid identification.
2. What if my SIM card is gone too?
Use another phone to dial the USSD code or contact your bank directly.
3. Does blocking my account stop SMS alerts?
Yes. All transactions and notifications are frozen until you reactivate your account.
Final Thoughts
Now you know exactly how to block your bank account, bookmark these USSD codes or save this guide — it could save you from financial loss.
If you found this helpful, share it with friends and family to keep them safe too.
👉 Read more in Banking:
USSD Codes To Perform All Other Operations GTBank, Access, and other Nigerian Banks
All You Need To Know About Access Bank Payday Loan
Current List of Commercial Banks in Nigeria

