Kontacts is a Blackberry application which can help users to transfer their contacts from any operating system to any other operating system.
Just take export of your contacts in the form of CSV file and then import using Kontacts Pro.
For iPhone users, export all contacts using free utilities like Contacts Kit which is available on App Store. And then create Kontacts Pro compliant csv from the xls produced by Contacts Kit.
For complete steps follow the steps given in attached document. Extract the zip file and go through the document.
