July 10th, 2012, 07:29 AM
Moderati ergo sum
Join Date: Jun 2010
Device(s): Nexus 4, Galaxy S II,
Nexus 1 (retired),
Thanked 11,242 Times in 6,145 Posts
There is no cost for using the gps, since all it's doing is receiving coordinates from the satellites. The cost comes with the mobile data used to download the maps while en route. You can cache your maps while on wifi and shut of mobile data while travelling and you should be okay. It will give you the audio turn-by-turn directions as long as you stay on the mapped route.
You will have to remember two things. First, Google navigator only caches the maps for trips of 10 miles or less, and if you deviate from the plotted route, it will not be able to adjust without a data connection.
If you tend to go off course a lot, you might want to look at a navigation app like copilot
that includes the maps so no data connection is required ... ever. Of course they can be a little pricy, but isn't $10 for an app once better than $30 worth of data usage monthly?