Yes! You can update your Email ID and Mobile Number online on Dhan.
You can find the option to update your Email ID or Mobile Number on Dhan App/Web's 'Profile and Account Details' section.
To know more click here: Update Email ID and Mobile Number.
PS: Here's a quick tour GIF of the process for your convenience.
Kindly note, once your new mobile number is validated (via OTP verification), we have a 24 hours cool-off period where you can cancel the request. This is a security measure we have implemented for our clients.
Your modification is only confirmed if your request has not been cancelled within this 24 hour cool-off period.