If you don't have internet access, you can call Airtel’s 24/7 helpline from any other phone.

To proceed with blocking your SIM, you'll need to verify your identity. This is a crucial security measure to ensure that only the rightful owner can request changes to the account.

Once you request to block your SIM, Airtel usually processes it quickly. The SIM is blocked almost immediately after the request, reducing the risk of unauthorized usage.