I use my iPhone for GPS. TomTom app so that I don't need to use data in Canada, that way I have it in every vehicle. The only downside is mounting. Sometimes the 12v or USB is not that close to the dash and not every steering column/speedo is set up for me to prop my phone there.
PLEASE do not send questions via Private Message, my inbox fills up too quickly. Post questions in the forum as a new thread so that other users can benefit from the answers. Use Private Messages for sensitive information only (VIN, Contact info or things you do not want the public to see).