Quote:
Originally Posted by P.C.
Smart phones are good as long as you travel in areas that the phone GPS system can reliably access cellphone towers, which represent the source of the information that the phone uses to calculate your current location. If you travel in relatively desolate areas where cellphone service is sketchy, you might want to pick up a Garmin or Tom-Tom GPS, the kind that you can stick onto your windshield with a suction cup.
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GPS coverage is everywhere regardless of cell phone towers. If you frequent areas lacking cell phone service google maps allows you to download a certain region or route. It will eat up some space on your phone and you won't get live traffic data but your navigation will still work. Also cell phone coverage today is miles better than even 3 or 4 years ago. I've traveled the length of the US west coast and deep into BC into some pretty far out of of the way spots. As soon as I hit even the smallest town or wide spot in the road I have solid TLE on Tmobile and no roaming charges anywhere.
If I really wanted a built in unit I would try to use something with android auto.