That sounds like an exciting trip, HEALINGHANDS11A. Turn by turn directions will definitely come in handy while in Italy. The good news is GPS does not use much data at all. When using navigation for an hour, you will be using approximately 5MB of data. I personally use navigation quite often on my phone. So far, I have used only 644MB of data for navigation since June 10 of 2017. As you can see, usage is very low for GPS. I hope this information is beneficial.
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