Time needed: 5 minutes.
The first thing which you have to do is to visit the official website of the IDFC First Bank.
On the official website of the bank, you have to choose the section where you can find the options to login to your internet banking account. Click on Personal and Business Banking.
You have to enter the username and the password of your Internet Banking of Net Banking. Make sure you enter the correct one. And you should never share your username, password, OTP and other things with anyone.
When you enter your correct username and password you will be taken to the customer section of internet banking. From there you have to click on My Profile link which you can find on the left side of the internet banking interface.
When you click on the My Profile link you will be taken to a page where you can find your profile related things like address, PAN number, etc. now you have to click on edit mobile number option.
Now you have to enter your new mobile number which you want to use as the primary mobile number for your IDFC First Bank Account.
When you are trying to change mobile number in IDFC First Bank using internet banking online, you will receive an OTP or One-time password on your registered mobile number. You have to provide that OTP in order to change your registered mobile number to the new one.
After entering the OTP you have received on your registered mobile number (old mobile number) your primary mobile number in the bank records will be updated which means you will now receive the OTP and the notifications about your transactions on the new number.