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Who knows about GPS system?

Which pda phones doesnt have a a-gps(assisted) system?

  • There are a lot of pdas with gps facility but max. have a-gps(assisted gps) system. Is there any pda phones that consists a built in gps chip? I mean u can directly track urself with the gps receiver(without the help of cellular network). Is there any pda phones avialable like dat?

  • Answer:

    I have the Att tilt with Windows Mobile It has standalone gps built in. Once you install a simple gps gate program on it to access the gps unit you can run it with or without a cell connection. It will just give coordinates .But if you had the mapping software downloaded to it .It would run it too The main reason i use the internet connection is so i do not have to download all of the maps to the phone. "Standalone mode is important. This means you do not need the carrier network at all to use GPS and usually you can install any GPS mapping software to boot. This is how the HTC Tilt and modern BlackBerries work and the Sprint Q9c " http://wmexperts.com/articles/gps_vs_agps_a_quick_tutorial.html

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Now for the other shoe to drop: the carriers. Every modern cell phone has an aGPS chip on it because of the enhanced 911 requirement, which is also why you don’t have many phones with a separate SiRFIII chip on board: it is redundant and expensive. But on Sprint, Verizon and some other carriers like AT&T they have devices with aGPS on board that is not accessible to the end-user for any purpose except for e911 (like the ppc-6700 or the Treo 700wx). Now why this is the case is a matter of debate and a lot of speculation, which ranges from “the carriers have purposefully disabled this feature” to “the API’s were not ready” (API= Application Programming Interface) or maybe even a combination. Some have also suggested that these devices need an internal antenna plexed to the chip in order to gain a satellite signal, although since cheap flip phones on Sprint can do aGPS, this remains controversial. Regardless, the fact that simple flip phones could do aGPS for mapping and $500 WM phones cannot, rubbed many in the mobile community the wrong way.

Al90211

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