You can use the open standard called CardDav to synchronise your Zimbra contacts to your iPhone or iPad.

You are connecting to your Zimbra account via a special URL over which Zimbra allows connection to your contacts.

To configure this on your iPhone or iPad open iPhone Settings application and choose Mail, Contacts, Calendar:

Open iPhone Settings application and choose Mail, Contacts, Calendar:

Then select Add Account…:

press Other:

Choose Add CardDAV Account:

Enter your Zimbra server hostname in the Server field,

eg zimbra.opensure.net

provide your username and password then press Next:

username=your@email.address
password=yourpassword

On the account page, open Advanced Settings:

Enable SSL

Done!

Posted in: iPhone, OpenSure Guides, Zimbra Collaboration