Using django web app backend with mobile app on ReactJS

I have backend of web app by django, include registrations/user profile, the ability to add photo(video) file and view them, and list of places with the ability to book them.

Now I need to add the ability to work with a mobile application written in ReactJS.

The problem is that before that I did not work with mobile applications and I do not know what strategy to choose, but the frontend developer did not work with the backend. Can I pass django variables directly to the ReactJS code? Do I need additional technologies or frameworks? I would be grateful if someone shared their experience and described how to do it (preferably the least simple way)