How to Lock-Unlock ATM/Debit Card and Credit card?

In modern banking, the ability to lock and unlock your ATM, debit, or credit card quickly is essential for security and convenience. Many banks provide multiple ways to manage your card status instantly in case of loss, theft, or suspicious activity, and equally easy ways to reactivate it once the issue is resolved. This guide explains the latest methods available in 2025 to lock (block) and unlock (unblock) your cards from various major Indian banks.

Unlock Debit Card/Credit Card?

You can unlock your debit and credit cards from banks like State Bank of India, ICICI Bank, Punjab National Bank, Canara Bank, Bank of Baroda, HDFC Bank, Indian Overseas Bank, Union Bank, and others using the following convenient channels:

  1. Internet Banking:
    Many banks offer card management options within their internet banking portals. Simply log in, navigate to the debit/credit cards section, and use the block/unblock feature to secure or reactivate your card instantly. This is one of the fastest online options to control your card without contacting the bank directly.
  2. Mobile Banking App:
    Mobile banking apps like ICICI’s iMobile, SBI YONO, HDFC MobileBanking, and others enable you to lock or unlock cards on the go. Within the app, look for the card services or manage cards menu, where you can block or unblock your debit or credit card with just a few taps, ensuring your card security anytime and anywhere.
  3. Customer Care Call:
    You can call your bank’s customer care number and request card blocking or unblocking. Customer service agents will verify your identity by asking for details like account number, name, date of birth, and sometimes additional personal info. After verification, they can lock or unlock your card usually during the same call or within a short time frame.
  4. Bank Branch Visit:
    If online options or customer care do not work, visiting your home bank branch is a foolproof method. Bring valid ID proof and a written request/application stating your card issue or request to unblock or block the card. The bank officials will process your request on the spot and resolve your card concerns directly.

Additional Methods and Important Notes:

  • SMS Banking: Some banks offer the option to block or unblock cards by sending an SMS from your registered mobile number with specified keywords or formats. This method varies by bank and is useful if you don’t have internet access.
  • Automatic Unblocking: In cases where your ATM card is temporarily blocked due to multiple incorrect PIN attempts, the bank may automatically unblock the card after 24 hours once the security protocols are cleared.
  • Reasons for Blocking Cards: Cards are commonly blocked due to suspected fraud, loss/theft, multiple incorrect PIN attempts, or when expired. For expired or permanently deactivated cards, unblocking is not possible; you must request a new card.
  • PIN Change After Unblocking: For security, it is advisable to change your PIN after unlocking your card. This can be done via an ATM, net banking, or mobile app.

In summary, locking and unlocking your ATM, debit, or credit card is now more accessible and user-friendly with multiple digital and offline options tailored to enhance your security. Always keep your bank’s official contact details handy and regularly monitor your accounts for unauthorized transactions to ensure full security.

When you purchase through links on our site, we may earn an affiliate commission. Read our Affiliate Policy.