I've had some contacts disappear on my iPhone 6s Plus. I'm running the lates iOS and iTunes as well. Already checked the iCloud settings and Erasing and Re-syncing my iPhone in full. My text messages will show up with the contacts phone number ONLY and all the other information is gone, until I "create a new contact" again. And in some cases I can't even edit to "create a new contact". Very weird. Any thoughts? Thanks!!