Heading to Portugal next year. We will be there for two weeks and will have a car for about 10 days - we turn it in when we get to Lisbon. I would like to be able to use Waze like I do in the US but I know that I could never use my US phone as the data usage costs would be nuts. Is it possible to rent a smart phone including usage for that time? Make sense of crazy? Usually I just use my phone for emergencies and use Skype from the hotel. If it is a good idea, has anyone done it and anyone know of a good company? Thanks.