I also assume when traveling I have no data, and download a map to my phone before leaving for GPS. When driving around LA however, for example, I'll use Google

I also assume when traveling I have no data, and download a map to my phone before leaving for GPS. When driving around LA however, for example, I'll use Google Maps which is a total data hog and works great on T-Mobile most anywhere. Google Nexus + T-Mobile: one of the best combos out there when in a US city.