I have configured iOS for intune and I have conditional access also so if MS Teams or Outlook is not enrolled it wont all you to use the app.
Now my issue is here... I uninstall the portal and the management profile still remains. ie I can still access MS teams and Outlook. If I remove the management profile and remove the device from All devices under azure i can still access MS teams. I basically have nothing linked to intune and i am still using my apps as though as I am still enrolled