I'm just going to leave this here. Picked it up a few weeks ago from the Seaside Revival Festival. We were lamenting the demise of the printed guide when we were in New York. I remember the first time I was there and how I was very self-conscious about pulling out my guide book, particularly in some of the dodgier corners I found myself.
I guess Googling your current and intended whereabouts is more discrete but a tourist is a tourist and isn't not going to stand out, particularly in some of the dodgier places we found ourselves.
Our lamentation was somewhat fuelled by roaming avoidance and battery level anxiety of course.