ios6 - iPhone: How to merge linked phone number to contact -

ios6 - iPhone: How to merge linked phone number to contact -

as suggested in this post it's possible retrieve "missing" phone number contact (when kabpersonphoneproperty empty, phone number visible in address book) on ios 6 using linked contacts array (abpersoncopyarrayofalllinkedpeople). how can test specific contact in array, , merge/overwrite contact's phone number?

ios6 abperson