3GS GPS with no cell coverage or wifi?

Discussion in 'iPhone' started by firewood, Jul 25, 2009.

  1. firewood macrumors 604

    Jul 29, 2003
    Silicon Valley
    Will the iPhone 3GS GPS work if Location Services is turned on when in an area with absolute zero cellular coverage (and no wifi as well)?

    Note this question is not about driving out of range with the Maps app already running (the blue dot may still appear, and Compass will give you coordinates). This question is about first turning on Location Services and starting the Maps app when already out of range of any cell towers (dead spot up between mountain ranges).
  2. ct2k7 macrumors 603


    Aug 29, 2008
    London or Florida
    Should do, iPhone GPS chip wil get stuff from satellites, although the cell towers do help to provide location in some instances.
  3. alphaod macrumors Core


    Feb 9, 2008
    You'll get the longitude and latitude, but nothing else.
  4. tcarcur macrumors newbie

    Jan 16, 2008
    You'll get everything that the iPhone normally provides.

    The only difference is that it's going to take longer (sometimes a lot) to get a fix of the GPS satellites.

    The cell towers / wifi help the iPhone narrow down on the satellite search by determining which satellites are currently above you. But this does not mean the iPhone cannot search for the GPS signal on its own.

    It may take up to 15 minutes max. but on average probably 5 minutes before you get your location fix.
  5. skubish macrumors 68030


    Feb 2, 2005
    Ann Arbor, Michigan
    You get the location data (lon, lat) but the google maps requires data to pull down the actual map of your location. If you are using an app that includes maps then you are set. In short, don't expect to use Google maps without data.

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