tomtom gps on tmobile

Discussion in 'Jailbreaks and iOS Hacks' started by mayakukla, Aug 16, 2010.

  1. mayakukla macrumors regular

    Jun 14, 2010
    with a tmobile phone with no data. will an unlocked iphone still catch the satellite signal and still work or is data required?
  2. powerbuddy macrumors 6502

    Jun 20, 2006
    I have unlocked iphone 3gs on T-mobile. Tom Tom works just fine. From what I understand, it doesn't use any data, however what it uses is AGPS, so when you are indoors it will use the triangulation to get your location, and when your device gets a clear line of sight to the sky for the satellite, it will use the satellite's gps signal for its navigation.

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