Sync or unsync Yahoo Contacts on Android devices
Install the Yahoo Mail app and you'll be able to sync your Yahoo Contacts on your Android device's address book, giving you access to your contact info in any app that uses the address book.
- Add Yahoo Mail to your mobile device
- Open your device's Settings app.
- Tap Accounts.
- Tap Yahoo.
- Tap your Yahoo Mail account.
- Select Sync Contacts to turn it on or deselect it to turn it off.