I would like to disable OWA for devices for all users except those currently using the OWA for iPhone/iPad app. Is there a PowerShell cmdlet available to grab mailboxes that have OWA for devices accessing them? I've been looking at get-activesyncdevices but this only returns actual devices using activesync. I haven't seen how to pull the OWA for devices objects with PowerShell. They are visible in EAC when viewing details under Mobile Devices, but that's not very helpful for the number of users would have to look through.
Exchange 2013 CU1 Enterprise