GPS - accuracy, performance, availability ?

Discussion in 'Android General Discussions' started by eliwellis, Feb 19, 2010.

  1. eliwellis
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    eliwellis New Member

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    Hi everybody,

    A friend and I are putting together an app that uses the GPS. We've noticed, more often than we would like, that our Droids (motorolas) don't have a current fix on our location. So I thought I would put out a question to you all, a survey if you will.

    The questions are these:

    - How well do you rate the phones gps? In a rural area? In the city? How accurate is the position shown on the map? How often is your "location temporarily unavailable"? Which Android phone do you have?

    -For those of you with experience with other hand held GPS devices (Garmin,Magellan,Delorme) , how does the androids gps hardware compare?

    -For those of you with both android and iphone experience, do you notice a difference?

    Thanks in advance for the responses and the help.

    -Eli
  2. garrett
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    garrett Active Member Theme Developer Developer

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    comments in red.... hope this helps.
  3. smokiedabong
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    smokiedabong New Member

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    In my opinion it works better than a Garmin 255 , it shows my location and has satellite lock in areas where Garmin loses signal . I have around 4-5 signal losses per week , and they last for 10-20 seconds till I drive in another area .
  4. CBLJazz
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    CBLJazz New Member

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    the beauty of this system- and the reason no one will be able to compete with it- is it's integration with google maps.
    google maps is amazing on the computer and great on this phone.
    the navigation is 9/10.
    compared to a stand alone unit it is better because of google maps.
    i can't compare to an iphone because i never had one.

    the gps is accurate if you delete aps that interfere with it.

    I had several news apps that used location and messed up my gps- deleted those & now it's perfect within 10-20ft.
  5. zakany
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    zakany New Member

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    Droid, iPhone, Garmin, etc. probably all use the same GPS chipset.
  6. sroach23
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    sroach23 New Member

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    the gps on my droid sucked until i read the calibration method in the faq. now it is extremely accurate.
  7. lschicky
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    lschicky New Member

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    At my house, no GPS gets a good fix. Outside and so far everywhere else it's been just as good if not better then my Standalone GPS unit. Droid has a better GPS then my last phone. (Omnia with the GPS fixed)

    Don't forget, the droid has two forms of GPS. Actual GPS and aGPS which is where it uses the cell towers.
  8. iPirate
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    iPirate New Member

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    link to this?


    My GPS works great when it has a fix. I sometimes have difficulty getting a fix but turning GPS off and back on fixes that problem.
  9. CBLJazz
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    CBLJazz New Member

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  10. Omega-Tron
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    Omega-Tron New Member

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    I live in Northwest Iowa and the GPS is a little flaky in some rural areas. Once the GPS has a signal for at least 10 seconds though it seems to keep the signal.

    I haven't actually compared the Droid side by side against my Navigon and Tom Tom to see how the signal strength is in the "dead zones" but I like the Google Maps interface a lot better. Probably because it has so many features like always up to date POIs and voice recognition.
  11. filterbox
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    filterbox New Member

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    My comments in red. Good luck on the app.

    Edit: Also there is a really good app that shows GPS status and fix information. It's called GPS Status. Right now it shows I'm fixed to 8 satellites with an error margin of about 12 feet.
  12. gpsmapper
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    gpsmapper New Member

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    No, the iPhone 3G/S uses an Infineon PMB 2525 Hammerhead II chipset. The Droid uses a multi-function Qualcomm chip. Garmin uses neither of these.
  13. eliwellis
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    eliwellis New Member

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    Thanks for all of the responses.

    Do any of you notice that the droids gps seems to have good days and bad days? Sometimes it has me perfectly throughout the day , other times it doesn't have my location at all. ( or thinks I am in Quebec , which I am not )
  14. lschicky
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    lschicky New Member

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    what's the weather like on the bad days? Anything that uses satellite will have bad days.
  15. eliwellis
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    eliwellis New Member

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    I am curious also about how well the phone finds your location using wireless networks. Either with the gps on or off. Is there an app similar to GPS Status that monitors connections to wireless networks?

    Any links to other threads related to this would be appreciated.

    Thanks
  16. streetkid
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    streetkid New Member

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    Sorry to get off topic, but I don't understand the FAQ on calibrating the GPS.

    Do YOU spin around 3 times, or you just set the phone in your hand and spin it 3 times?
  17. spillner
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    spillner New Member

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    I have never lost GPS while using navigation. It is so accurate that it tells me when to turn in large parking lots! It has out performed my fathers Garmin and my friends TomTom in accuracy.
  18. tommyz
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    tommyz Member

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    I think the GPS is very accurate. The problem with the Google Navigation is the map data.

    Google maps are no where near the Navteq used on the Garmins.

    On many occasions the Google Maps showed an address in the wrong spot, while the Garmin pointed to the right place.

    I think once Google gets there map data more accurate the navigation will improve.

    I have to say nothing beats the traffic on the Google maps. It is pretty amazing and even works on main streets.
  19. iPirate
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    iPirate New Member

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    I had the opposite experience. Google told me the correct location while Garmin was off several times.
  20. filterbox
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    filterbox New Member

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    Yes, soon after I posted my response to your survey, I went to my maps and it took a few minutes to connect to any satellites. It had my location within a few blocks based on the cell towers, but no gps. It has also placed me in San Diego and Pebble Beach, CA which are nowhere close to Los Angeles...usually that fixes itself within a couple seconds and I usually notice it with my WeatherBug app. I have no clue why it would think I was in either of those places.
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