Video Tutorials donald.lawton Updated May 05, 2021 11:57 Follow Coming soon... Related articles How to Add a New Account Should I Sync or Move My Contacts? About App How do I eliminate duplicate contacts? All Settings Comments 1 comment Sort by Date Votes Tom OConnor May 16, 2019 22:58 I have Outlook & iPhone with the same contact lists. The contact list on outlook is updated daily. On the iPhone it was last updated 1 year ago. Should I delete the old outdated iphone contacts before syncing with outlook? I don’t want to develop a ton of duplicates. On outlook I have 2800 contacts. On iPhone I have 1950 contacts. Some the same but have been updated. Let me know before I perform the 1st sync. thank you! Tom O Connor 0 Comment actions Permalink Please sign in to leave a comment.