Once you configure the MES Console for smishing protection you must allow some permissions on your iOS device. Due to privacy constraints, iOS prevents MDMs from pre-granting permissions.
When iOS users update to Lookout for Work 9.0 or higher, and the admin has enabled Smishing Protection, users receive a one time notification to set up Lookout as the "SMS Filtering" provider by tapping a link in the notification, prompting users on the required actions.
Note: Scanning is only applied to messages from unknown senders. Any saved contact or a number that the user may have responded to at least three times, is treated as known by iOS and is exempt from scanning.