How do I get rid of multiple Z30 Contacts?

Hi...just got the z30....my contacts have been transferred over but there are many duplicates....was wondering the best way to take care of this issue as it is annoying...do I have to do it manually is their a good native app that would help with the issue?

You can either do it manually or download an app that suits your needs. There are many in the BBW, not one that stands out. Perhaps, Contacts Merger Pro.

BB10 eats contacts as well.