As the company Google in the pages of its blog dedicated to email service Gmail, a long time to access the services of Gmail and Calendar mobile application uses only two protocols: IMAP for email and for CalDAV calendar.

But now Google has added support for more than one protocol to the list – CardDAV. It is designed to work with the service contact. Specifically, CardDAV protocol allows you to add, edit or delete contacts in the user’s device, and use the same list of contacts both on the desktop and on your phone or tablet. This protocol is open. Its implementation will enable third-party clients, such as applications to work with contacts from iOS, synchronize contacts Google.

To synchronize contacts and Google Contacts iOS contacts with CardDAV protocol to follow the following instructions.