I have multiple mail accounts, one of which is Yahoo mail. I also have contacts syncing via iCloud turned on, and working across several devices. When I go to iphone > settings > mail-contacts-calendars > yahoo There is an option to turn on "Contacts" for that Yahoo mail account. Does anyone know what this does, or is supposed to do? After turning on "Contacts" in that yahoo mail account, my yahoo contacts do not appear in my contacts app, and are still not accessible from within the iphone mail app via auto-typing. I turned on fetch every 15 minutes (quite a while ago), and have been in and out of my contacts app numerous times. However, when I turn on the same "Contacts" setting for my Yahoo mail account on my mac (with mountain lion), the yahoo mail contacts DO SHOW UP in my address book. They show under a heading separate from iCloud and are treated as a separate group. That would be exactly the behavior I would want on the iPhone. It certainly seems as though turning on the "Contacts" setting within the iPhone's mail account settings ought to do the same thing, given that I can't imagine anything else such a setting is supposed to do. So, does anyone know what that "Contacts" setting is supposed to do on the iphone? Or how to make this work the way I want?