Windows Phone and trams go together very well. Last week, whilst on unfamiliar territory in the Netherlands, I needed to find the way to Escher museum. Windows Phone gave me all the details very quickly and I can even pin my route to the Start menu so that it is easy to refer to. Very useful.
And of course with the map already downloaded before we set off, I was able to navigate quite happily in spite of having no network connection for the phone.