You can change your registered email ID and mobile number from the trading platform itself.
Rocket Web Trading platform:
Click on the Profile Tab and click on the edit icon next to Mobile number or Email ID.
Go to Account -> Personal Details and select the edit icon next to mobile number and email ID.
Rocket Plus Web
Select the Man symbol at the right top of the page and select 'Profile Edit' from the drop down. Follow steps given under Steps to Edit Profile'
Rocket Plus Mobile
Go to the 3 line menu option as highlighted below and follow the steps as seen in the image. Follow steps given under Steps to Edit Profile'
Steps to Edit Profile
Click on Edit Profile which will allow you to change your mobile number, email ID, bank details and update Income for broking and DP account.
By clicking edit profile you will be taken to the page as shown below where you can type your new email id or contact number and click submit.
By clicking "Submit" you will get an OTP. Enter the OTP in the validation box and submit.
The change in the contact information will be updated for all the exchanges you are registered with. The new contact information gets updated immediately in the trading back office while the update in DP back office and trading system happens in 48 hours.