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How can I get an OTP for the Debit card transaction/ 3D secure transaction on my new registered mobile number?

To register/ update your new mobile number, follow the below steps:

Log on to www.icicibank.com> Personal > Apply online > Cards > 3D Secure PIN for Debit Card > Register > New User - Register Now> I Accept > Enter debit card number > Next > Select OTP > Next >
If your old mobile number reflecting under ' Below is the information stored in our database ' then select ' My details do not match' option under ' Please select your preferred option to receive the OTP ' > Next > your new mobile number will be updated.