The Google Translate app makes it easier to travel through a country where you do not speak the language. You could say that this application is bringing us closer to the universal translators used by the crew members of the Enterprise (although Google Translate does not include the alien language, yet).
Let’s say your data plan might not work in the country you’re visiting. Or that you have walked to a remote village where nobody speaks your language, and there is no data or WiFi service. You can count on Google Translate to communicate with locals through offline translation.
Offline translation only works on a smartphone or tablet; You can not use Google Translate without connection to the computer version of the application. You will need a small reconfiguration before using the application offline.