The application of Google Maps for Android yesterday received an update with many improvements. These include navigating public transportation. With it enabled, the program not only traces the route that you should make using the bus, train or subway in a city as well as signals with a vibration alert you when to get off or transfer to another line.
This feature uses the directions given by the system provided by the cities themselves, so for now the few cities in Brazil have supported it. They are: Belo Horizonte, Brasilia, Porto Alegre, Recife, Rio de Janeiro and Sao Paulo.
Another novelty is the ability of the application has to download a portion of the map when you're disconnected from the network data. This feature was already available before, but only with the update became possible to choose which part of the map would be stored in your phone.