Customer with a new iPhone 6 in New Zealand who was having a problem getting the GPS information to come through when they scanned the tag and sent a message. The message was coming through fine, just no GPS data.
Tried lots of things, noticed that the iPhone was not prompting to ask to share location info. Tried resetting location services and enabling everything and it still did not work.
Problem was resolved by resetting location services and privacy settings.
See Apple document for details: http://support.apple.com/en-us/HT6338