You can sync your Yahoo Contacts to your Android device's Contacts app to stay connected everywhere you go.
- Download and install the Yahoo Mail app.
 - Open the Yahoo Mail app.
 - On the Mail tab 
, tap the Menu icon 
. - Tap Mail Settings.
 - Tap Sync Yahoo Contacts.
 
Good to Know: If you want to edit your contacts' details, you'll need to do so from the Yahoo Contacts mobile site.