MetrO is a freeware tube routefinder that works for many cities around the world, on all Symbian-based smartphones. Steve's been putting it through it's paces on his Nokia 7710 to let us know what it's like.

Read on in the full article (http://www.allaboutsymbian.com/news/item/How_To_Find_Out_Where_To_Go_Under_The_Ground.php).