Has anybody used the GPS on their phone to get around? I have an android phone at home, in Arizona, and I use the google maps with the GPS all the time to get around. I'm asking to figure out if I can do the same in Guadalajara? Also, when driving down from the states, has anybody used their phone with GPS to make the trip, or has everyone just used paper maps? Or, have people used GPS units, like from Garmin or TomTom, to make their way around? One more question, does somebody have any idea as to which cell phone company provides the most coverage on highways nationwide (mexico) or in Guadalajara? Thank you very much for taking the time to answer any of these questions. It really is appreciated.