If Apple's DEP is available, you can restrict users from deleting Profiles. If automatic DEP is not available, you can manually supervise it using the Apple configurator. https://documentation.meraki.com/SM/Device_Enrollment/Enrolling_and_Supervising_iOS_Devices_using_Apple_Configurator_2.5_or_Later However, if you use the Apple configurator, the user can delete the profile with grace period for 30 days after enrollment. After 30 days, users cannot delete their profile with Apple configurator enroll.
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