I have EXCH 2010 and Samsung Galaxy Note 3 phone. I created an exchange account on my phone and email & calendar are synching just fine.
But I see way too many contacts (that I don't even recognize, certainly they are not in my Contacts list in my Outlook) on my phone and I learned that some of these additional contacts from PUBLIC folder.
I also confirmed that this has been happening to a couple of other user's phones too. So it must be happening to all smartphone users and they did not tell me about it.
I don't think I have changed anything in Exchange Configuration, but I don't know what triggered and how to fix it.
Can you help?