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Speed alert app

Discussion in 'Android Apps & Games' started by stephen1205, Feb 3, 2013.

  1. stephen1205

    stephen1205 Member
    Thread Starter
    5

    Feb 3, 2013
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    hi,may I know is that every speed alert gps apps will required built in gps to run?

    any speed alert apps work without gps? thanks
     

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  3. hstroph

    hstroph Well-Known Member
    98

    Oct 18, 2012
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    I'm curious please ... how would one expect an app to determine speed without the use of GPS?
     
  4. stephen1205

    stephen1205 Member
    Thread Starter
    5

    Feb 3, 2013
    6
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    5
    thanks,sory i dun quite understand gps, but wat i worry is the gps need data charge,but i heard some phone can use gps like standalone gps device, no need data charge
     
  5. BigRedGonzo

    BigRedGonzo Well-Known Member
    93

    Jan 12, 2010
    871
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    Male
    Process Engineer
    Winston-Salem, NC
    All Android phones that I am aware of have stand alone GPS units built in. Stand alone means that they don't have to have data to work. However, they also have a function called aGPS, which uses data to download a rough set of satellite positions based on cell tower location to help the unit lock on to its position much quicker. The amount of data downloaded by the aGPS function is extremely small, but it speeds up satellite acquisition (time to fix) drastically. After the lock is made, data is no longer needed.

    Hope this helps,
    BigRedGonzo
     

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