Disregarding DeviceLock policy restrictions on 'iPhone' device type, any data can be written to iOS devices either through Apple iTunes application, or any other third-party tool. Audit or shadow logs are not generated for file operations/synchronization with iPhone devices.
Comments
This issue may indicate that instead of the standard Apple driver (USBAPPL.SYS) for Apple devices, Operating System uses another driver which does not provide the possibility for granular control of Apple iOS devices.