Originally Posted by
BreakingKayfabe Even if turn by turn uses data it's not going to even put a dent on your data usage. And if you're in a bad area without cell signal the maps cache anyway like Sean said.
Maps uses a ton of data. I think people just don't realize just how much of a data hog navigation apps can be when you use them a lot. Had to up our data plan last year because the other person on it, who drives around a ton for work, was using 2.5-3GB data a month, just from Google Maps. They are very Data and Power Hungry apps when used moderately to heavily.
Using Here Maps gets rid of that issue, however it does require hefty map downloads (not an issue on a 64GB Phone, but may make you think twice on a 32, and about 10x on a 16GB device :-P ).