How do I add additional profile information to a user?

To display additional user details you can use custom data that is present in the User model.

Please check our SDK documentation for further details:
iOS SDK - Users | iOS SDK | QuickBlox
Android SDK - Users | Android SDK | QuickBlox
JavaScript SDK - Users | JavaScript SDK | QuickBlox
React Native SDK - Users | React Native SDK | QuickBlox
Flutter SDK - Users | Flutter SDK | QuickBlox
Server API - Users | Server API

Feel free to check our official documentation for more information that will help you to integrate QuickBlox services into your applications / projects or contact our Support team by submitting a ticket if you have any other questions.