anonymous user, Your understanding is correct. If we shoose Device Enrollment for BYOD, we just need to complete the prerequisites and assigned user licenses, users can download the Intune Company Portal app from the App Store, and follow enrollment instructions in the app. We can see more details about prerequisites in the following link:
https://learn.microsoft.com/en-us/mem/intune/enrollment/ios-enroll#prerequisites-for-iosipados-enrollment
Hope it can help.
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