Sync contacts using CardDAV
Synching lets you quickly bring your Yahoo Contacts to your iOS device
Synched information automatically updates whenever it changes on your mobile device or in Yahoo Contacts
Use CardDAV when you want to synch only your contacts info--not info from your other Yahoo products
The process is the same for all iOS devices
Tap Settings on the home screen
Tap Mail, Contacts, Calendars
Tap Add Account
Tap Other
Tap Add CardDAV Account
Enter this server URL: https://carddav.address.yahoo.com
Then enter your Yahoo ID, your Yahoo password, and a description
Tap Next
Verification information displays
Your contacts are now in your mobile device's address book
Now you can keep in touch with your friends from your mobile device and updates their information anywhere, any time