MyIT Mobile app does not formless authentication . This requires 2 realms to be configured in RSSO. 1 for Desktop app and the other for MyIT mobile app.
Users can login to desktop app directly (click the link and they are in) but for mobile app, they need to enter the User credentials first time they login ( logged out in 8 hours (Their session timeout setting)).
As a workaround , we have increased the session time out to 1 week (approx 150 hours).
I think it would be great if mobile app can support formless authentication , Heard EMM (solution) supports formless authentication.