Comments on: Can I use the iPhone’s new “Assisted-GPS” out in the boonies? Or, does it NEED cell phone service? http://consumerelectronicstips.com/uncategorized/can-i-use-the-iphones-new-assisted-gps-out-in-the-boonies-or-does-it-need-cell-phone-service/ Tue, 03 Nov 2009 05:46:59 +0000 hourly 1 http://wordpress.org/?v=3.1.2 By: One Tusk http://consumerelectronicstips.com/uncategorized/can-i-use-the-iphones-new-assisted-gps-out-in-the-boonies-or-does-it-need-cell-phone-service/comment-page-1/#comment-2728 One Tusk Mon, 14 Sep 2009 22:51:08 +0000 http://consumerelectronicstips.com/gps/can-i-use-the-iphones-new-assisted-gps-out-in-the-boonies-or-does-it-need-cell-phone-service/#comment-2728 It's not nearly as good as a "real" GPS. Limited accuracy as to where you are located while a GPS can give your location with a great deal of accuracy. If you are in an area where there is no phone service it won't work at all. It uses the cell tower signals to triangulate your approximate location It’s not nearly as good as a "real" GPS. Limited accuracy as to where you are located while a GPS can give your location with a great deal of accuracy.

If you are in an area where there is no phone service it won’t work at all. It uses the cell tower signals to triangulate your approximate location

]]> By: geog_nerd http://consumerelectronicstips.com/uncategorized/can-i-use-the-iphones-new-assisted-gps-out-in-the-boonies-or-does-it-need-cell-phone-service/comment-page-1/#comment-2727 geog_nerd Mon, 14 Sep 2009 22:51:07 +0000 http://consumerelectronicstips.com/gps/can-i-use-the-iphones-new-assisted-gps-out-in-the-boonies-or-does-it-need-cell-phone-service/#comment-2727 The iPhone has a real GPS receiver. Assisted-GPS, or a-GPS is just what it says it is. The cell tower location data is used to assist the GPS receiver when it does not have a good position fix from the GPS satellites. For example, if you are in a building and cannot get a GPS position fix, the phone will use triangulation from the cell tower data to come up with a position. The iPhone has a real GPS receiver. Assisted-GPS, or a-GPS is just what it says it is. The cell tower location data is used to assist the GPS receiver when it does not have a good position fix from the GPS satellites. For example, if you are in a building and cannot get a GPS position fix, the phone will use triangulation from the cell tower data to come up with a position.

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