Need help with Access Token via Mobile APP and SSO with other APP in webview

From Mobile app using REST API we are getting access token and refresh token.
Now in my mobile app I have link to a 3rd party video calling platform which uses SAML 2.0.
This needs to be opened in an webview. When I open it in webview it is asking for login, when the user is already logged in in the app via rest API’s.

Need some advise on how to acheive this functionality.

I’m guessing that when you said “Mobile app using REST API” you meant that you are using the ROPC grant type. In this case, you don’t have a cookie in the IdP for SSO. Of course, I’m assuming that every single app is integrated with the same IdP.

Yes, all are using same IDP
IDP is keyclock