Talk:Italy/@comment-199.67.131.148-20150729132956/@comment-24682153-20150729143237

No. Generally European providers don't send SIM cards abroad. What Italy is concerned, you need to be in person on location with an ID to be registered. So there is hardly any "secondary market" for Italian SIMs on Ebay.

For navigation you only need a GPS in your phone and a preinstalled map. To install a map is something you can do already at home. It's much cheaper than to use offline maps that need to be downloaded every time you move around.

That's why the data consumption you'll need for navigation depends very much on the app that you are using. But I guess, it'll be the same like in the US.