Symphony mobile version 1.55 (iOS) and 2.55 (Android) supports Windows Azure AD. As a result, the internal rule configuration in Azure AD may take priority over the Symphony configuration and could prevent user access unintentionally (Figure 1):
Figure 1 Inability To Sign In With SSO
To resolve this issue, have your internal mobile team ensure the browser under Symphony is permitted in the the Intune policy for Windows Azure AD.
Note: Refer here to check if there is a Chrome policy permit