I want to prefill some input fields in an app's registration process in order to make it more seamless. Is there a (Apple authorized) way to access this data?
No, what you want to do is an often requested feature, but for reasons unknown (probably security related) there is no way to even determine if the phone's owner has an address book entry. I suggest you go to bugreporter.apple.com and ask for this feature (as many of us already have!)
Answer author David-h
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