Is the gps tracking more accurate with 3G on?

Discussion in 'iPhone' started by jabingla2810, May 21, 2010.

  1. jabingla2810 macrumors 68020

    Joined:
    Oct 15, 2008
    #1
    Ok this may be a really stupid question.

    But Ive just started using an app to track my bike rides. I just start the app, throw my phone in my bag and forget about it till I get home.

    I've been turning off 3g as the gps alone is a battery hog, however does the 3g signal aid the gps using triangulation or something?

    Any info is much appreciated :)
     
  2. Small White Car macrumors G4

    Small White Car

    Joined:
    Aug 29, 2006
    Location:
    Washington DC
    #2
    What do you mean by "turn off?"

    Are you just using EDGE instead of 3G? Or are you putting on airplane mode and killing 3G and EDGE?

    EDIT: You know, I asked, but I don't think the answer matters. It shouldn't be a problem. Triangulation is for when it can't find a signal because you're indoors. There should be no problem getting a clear signal for a bike ride so I doubt that ever comes into play.
     
  3. nickspohn macrumors 68040

    nickspohn

    Joined:
    Jun 9, 2007
    #3
    GPS shouldn't be any more accurate with 3G on or off. The only thing that will be quicker possibly is when GPS finds your initial position.
     
  4. Geckotek macrumors G3

    Geckotek

    Joined:
    Jul 22, 2008
    Location:
    NYC
    #4
    I know it does use triangulation, but not sure if it uses the 3G signal to do so or not.
     
  5. Gav2k macrumors G3

    Gav2k

    Joined:
    Jul 24, 2009
    #5
    Once a gps lock is made it makes no difference.
     
  6. TheCheapGeek macrumors 6502

    Joined:
    Jul 10, 2008
    #6
    The gps in the iPhone is A-GPS or assisted GPS. The GPS is performed quicker with the aid of the wifi triangulation and cell tower triangulation but when a lock occurs you dont need any connectivity at all. I do the same with runkeeper, a workout tracking app, I turn airplane mode on and my distance and running map are perfect.
     
  7. -aggie- macrumors P6

    -aggie-

    Joined:
    Jun 19, 2009
    Location:
    Where bunnies are welcome.
    #7
    It uses 3G or EDGE for triangulation (as well as any wifi hotspots).
     
  8. Geckotek macrumors G3

    Geckotek

    Joined:
    Jul 22, 2008
    Location:
    NYC
    #8
    Good to know. Although, aren't you afraid you'll miss a call?!? :eek: :p
     

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