Google has announced a new, but more importantly, easier way to sync Gmail contacts to your brand new iPhone 5 (and other iOS devices running iOS 5.0 or higher). Google announced support for CardDAV, an open protocol, which allows iOS Contacts app and Google Contacts to play nice.
If you prefer not to use other existing third-party apps for importing Google Contacts, you may give this method a shot. The company has provided detailed instructions. We’ve screenshot them below for your convenience:
Note: Syncing via CardDAV requires iOS 5.0 or higher.