I just upgraded to an iPhone 4 and will be going to Europe in a while. I know that Maps will not work over there because it is outside the US but I have a few questions: Will the iPhone 4 still get GPS signals? Can I open up Maps & put a pushpin at the hotel location & have the Compass app point me in the right direction when I want to get back? Any other advice for a traveler with an iPhone 4? Thanks for the advice.