This seems timely given iOS 18 has limited contact list syncing [1]. Curious if you have a social app focus or thoughts?
For example, you could detect that the user limited permissions with out targeting, and use a native banner+modal to inform them of the benefits of approving all, and deep link to settings to change it. This would only target impacted users and not everyone. Again, no new code to write or app releases -- the SDK lets you handle the unexpected.