[Android] Allow app links during sign-in process or use chrome custom tabs
To increase security it would be better that the Teams app would use Chrome custom tabs during the sign-in process. From a security point of view this is even recommended when you browse outside your domain - which is the case for federated authentication of course.
Switching to custom-tabs would solve the problem we are currently experiencing with Android WebView.
We have an "Android App Link" or "Apple Universal link" on our sign-in page. It should open our strong authentication solution using nextauth.com technology. This works great on all platforms, except the embedded WebView used by the Android Teams app.
If you have installed "Microsoft Authenticator", the authentication process is handled by that app. In that case the federated IdP is embedded via WebView in the Microsoft Authenticator app. Again "Android App links" are not supported in that scenario.