Although Google is perfecting this feature to the hardware, for now Sigmo may provide an awkward solution to chat in different languages.
Not sure why you'd need this. iTranslate does this on my iPhone - and I believe it was a free app.
Don't think it's that necessary for the occasional traveller there is iTranslate for iOS and Google Translate for Android which are both free! However I see conference organizers and event managers using these. Say there is a UN conference the organizers rent them out to attendees.