Sorry it sucks...thank you for the warning so the rest of us can save our money...I don't have unlimited data on my cell phone so using that is not an option. I ordered the navigation upgrade flash drive for my 2013 Volt. The upgrade leaves a lot to be desired. Still many roads not listed at all that have been in existence for decades. The for price I really expected a lot more. Will have to rely on my Garmin for any serious navigation.