I just set up my brand new iPhone 5 running iOS 6. I set it up as a new device. I have been using Exchange to sync my contacts with Google (Gmail) Contacts for the past few days. Today I stopped doing that and started syncing via CardDAV.
However I have some contacts that I can't delete. In fact, if I turn off all contact syncing (including iCloud) I am still left with 50 contacts that I can't delete. I try to delete them, but they just stay there.
Any thoughts on how to solve this?
Update: Note that I have tried a restore (and restored from backup) on the iPhone and this did not fix it.