The documentation of CLGeocoder states:
An iOS-based device must have access to the network in order for the
geocoder object to return detailed placemark information. Although,
the geocoder stores enough information locally to report the localized
country name and ISO country code for many locations. If country
information is not available for a specific location, the geocoder may
still report an error to your completion block.
Do anyone have any experience whit this? Sitting in Oslo, Norway I get an error when trying to look up the country offline. So what is many locations?
It depends on your cache. If you have some information on your local disk cahsed that can help get the location, you wont need an online connection.