Well as great as our new phones are (I also have one) they do not have a satellite antenna, they use cell towers to triagulate your position, and I tried mine in the woods no cell signal means no GPS, mine did not work just a few hours from my house due to the very small towne, it will work in parks in the city but the good hiking is always far from cell towers, sorry man, the garmin nuvi phone is supposed to have a full satellite GPS if you need such a thing, I would rather use my garmin vista HCX with 32hrs. on one set of 2600 ma. rechargable batteries.