How to get contacts from an Android phone to an iPhone? Possible Duplicate:
  How can I transfer my contacts from an iPhone to an HTC Inspire?  




I use Google to maintain my contacts, which syncs to my Android device. However, I'm switching to an iPhone 4. Will it be easy to transfer contact information?
The Mail, Contacts, and Calendars settings allow you to sync all 3 from multiple different web services to the built in Mail, Contacts, and Calendars apps. These should automatically sync when you open the different apps.

The contacts will be merged by default, but you can filter based on source i.e. Gmail, My PC, etc.