Question in title.. the other day, I went to the mountains and did not have any signal but my gps worked just fine. This leads the question, does using the gps use any mobile data at all?
I'd guess no, but I'd be more curious to see if an app like GPS Essentials works when you're in that situation. It pulls a lot of info from GPS.
There is an app that caches a large map file on your SD card so you can do basic map (not google) navigation without any data connection at all but the name of it escapes me at the moment. If that app is even possible then I'd guess GPS can function independently of data as long as it doesn't need anything beyond basic location info.
Today's Google Maps update in the market kinda deals with this. It adds caching options so that if you lose your data connection (which is required for things like driving navigation) you don't lose everything else too. It caches data so the phone can continue working for a few minutes even without a data signal.
The GPS has a function which access the internet to help it lock on for the first time. It looks up on the internet where the satellites might be. If you have a standalone GPS that you have not used for a while, it takes several minutes to lock on. Looking up where the satellites are on the sky through the internet speeds this up significantly. I believe that is what is called A-GPS. But I believe any GPS works standalone, without data.
forum.xda-developers.com/showthread.php?t=819394
YES .......
I have never had my GPS locate me via google maps. My Phone has no issues. Anyone else have GPS issues? any tips? Hopefully a software update fixes it? I have a friend who has the same issue.
[Should have read "awful", not aweful]
Nothing wrong with my gps. Have you upgraded to the latest firmware? Downloaded the A-GPS data (you can get this by using an app called GPS status)? Switch OFF wifi after you do, then leave it to get a full signal lock (takes up to 15minutes or so with a clear view of the sky).
toddmp said:
I have never had my GPS locate me via google maps. My Phone has no issues. Anyone else have GPS issues? any tips? Hopefully a software update fixes it? I have a friend who has the same issue.
[Should have read "awful", not aweful]
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Make sure you are outside with a clear view of sky when you test. It can take any GPS up to 10 minutes to acquire the ephemeris information (satellite position at a certain time) and lock up. You phone cheats this by using the cellular network to provide a general location of where your are and therefore where to look for certain satellites.
thanks so much for the info guys. I had a feeling it had something to do with no cell phone band helping out. thanks!
GPS works fine here, as other have said the closer you are to the sky/window the better.
yeah..give your TF a few minutes to lock up sat positions (if you've never done this)..
this applies to most pure gps devices..cellphones can use cellular network signal to quickly locate your position but the data isn't really from gps itself.
http://forum.xda-developers.com/showthread.php?t=1088120
Hope this helps
Acid lestitious 2.0. Fugumod 2.4 800 mhz
jerrykur said:
Make sure you are outside with a clear view of sky when you test. It can take any GPS up to 10 minutes to acquire the ephemeris information (satellite position at a certain time) and lock up. You phone cheats this by using the cellular network to provide a general location of where your are and therefore where to look for certain satellites.
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Click to collapse
I wonder if it does the wifi cheat like maps for android phones, where it uses the known APs to determine location? I say that because when I first fired up my transformer yesterday, after connecting to wifi, I screwed around on maps and it found me inside my house in less than 30 seconds.
toddmp said:
I have never had my GPS locate me via google maps. My Phone has no issues. Anyone else have GPS issues? any tips? Hopefully a software update fixes it? I have a friend who has the same issue.
[Should have read "awful", not aweful]
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Click to collapse
its the reverse for me! in the same room of house i often cannot get a fix on my Optimus 2x. i use GPS Staus app. but i often get fix within 30secs. as a test i have both machines running the app next to each other and the transformer always gets regular fixes.
..... hmm just realised as i type this that i have a phone called optimus and tablet called transformer, and they both run android!!!
I get fixes with no wifi (ie: only GPS) within 30 seconds.
Quite the opposite, mine is extremely accurate. After it gets a fix on maps that little google person is standing right in my front yard in the satellite view! Better than my Droid!
Mine is almost instantaneous. Just tried it at home based on this thread and had a read in probably 5 seconds.
I have not been able to obtain a GPS lock until today when I set my location to use wireless networks. To me this is really stupid because the GPS shouldn't have to use any location settings to obtain a lock in my mind. That is if the GPS chip in the TF is a true GPS chip it should not to rely on a wifi signal to obtain a lock. If the GPS is turned on then it should lock.
I tested sygic gps navigation 11 and signal lock and quality was better than my galaxy s was pretty accurate
Sent from my Transformer TF101 using XDA Premium App
Works fine for me, apart from one minor detail. When I switch from Google Maps to another app, even for a few seconds, then the tablet has to get a lock all over again. There appears to be no way to set the GPS to keep a lock while Google Maps isn't the active program.
That, for me, makes Google Maps near-useless in a moving vehicle. Hopefully other third-party apps won't have this issue.
Google Maps is prety much useless on the Transformer for GPS navigation as a data connection is need. I have heard of people caching a route before hand but ..... Copilot Live 7 is out for android so that is one option. However if the GPS relies on a wifi signal in order to obtain a lock then it is about useless too.
toddmp said:
I have never had my GPS locate me via google maps. My Phone has no issues. Anyone else have GPS issues? any tips? Hopefully a software update fixes it? I have a friend who has the same issue.
[Should have read "awful", not aweful]
Click to expand...
Click to collapse
Gps works fine on mine....unlike my icons or Samsung...both returned
gps does use wifi to help gps locate, theres options to turn this off in settings, i went to pick up my dock today and couldn't get a gps lock while in the car with the transformer in my lap(gps status app showed 3 sats but none would lock) just lifting it up 12 inches closer to the windshield made 7 satellites pop up and instantly started getting locks
i think proximity to a window/line of sky is a big factor, and the transformer does have a true gps chip for those who seem to doubt it, also the navigation app keeps running in the background, its better to use that than google maps
No issues with gps here. The bastard finds me every time!
jadesse said:
However if the GPS relies on a wifi signal in order to obtain a lock then it is about useless too.
Click to expand...
Click to collapse
It doesn't rely on WiFi for a lock, it just uses it to allow a faster connection if you don't already have current ephemeris data downloaded. That's a limitation of all GPS receivers -- it takes a fair while to download the ephemeris data if you're out of date or have travelled a significant distance, and without it the device can't get a GPS fix.
You can think of the WiFi location system as analogous to a cellphone being able to use tower locations to help position itself while waiting for GPS ephemeris data.
Hi guys, I've been working hard for a while trying to track down a work-around to get gps to work properly, I've been testing my idea for about a week now and its been 100% effective for me so far.
Back ground:- I've been messing with every rom and they all exibit the same issue, "no azimuth or elevation data" is being received from the satelites. Without this data no location can be caluclated.
I stopped using Zeubeas ICS for a while as I wanted to use what should be a perfect, stable rom, as good as zeubeas rom is I didn't feel it was stable enough for my testing, so I ended up choosing cyanogen 7.2.0 as my choice.
First thing to note is that I have found that "gps test" by chartcross or gps status & toolbox by mobiwia eclipsim don't seam to work properly, as in they are supposed to have the ability to clear the agps data stored on the phone but from my testing it dosn't work hence why I struggled for so long beleiving those apps worked. So I stopped using them compleatly.
I Did find an app that does seam to work for me, it is also called gps test, but it is by Mike Lockwood, it shows satalite azimuth and elevation data and also seams to clear the agps data correctly.
I also use a really neat gps app called AndroiTS Gps test free, it has a nice gui, shows satalite azimuth and elevation data and more and doesn't seam to cause any conflict with gps apps.
The test condidtions:-
GPS on
3G & wifi off
Open either androiTS or gps test (then menu and start gps)
Wait a while, if you see numbers in the azim & elev other than 0(zero) you should eventually get location lock I have found that it takes no longer than 5 minutes to get lock, outside in the open.
Ok so you don't see azim & elev data, here's what I do to get it going again
Gps on of course
3G and wifi off (don't want any data or anything just yet)
Open gps test
Menu
Select clear aiding data
Close down gps test
3G data on, wifi off (having wifi on doesn't seam to help)
Open gps test
Menu
Start
Hey presto I see azimuth and elevation data again
When I do this I get really quick gps lock
Another thing I have noticed if you do the clear aiding data with 3G data off and wifi off then start gps you won't see azimuth or elevation data.
I hope this helps all the others with gps issues, if your getting gps issues and you can see the azimuth and elevation data but no lock this solution "may" also help.
I have not yet tried this idea on any other rom, so I don't know if it works as it does for me using cm 7.2.0, that is on my "todo list"
Happy Gps'ing
Update to this discussion.
I have now tried zeubeas beta 4 and out of the box I get no azimuzh or elevation data, the method I put forth above unfortunately did nothing to rectify GPS data either.
Sent from my Legend using xda app-developers app
Today I have used the Fake GPS Location app to change my location to somewhere else.
But after I stopped the app, and open the Google Map, choosing "GPS only" in the location setting, I cannot get my true position.
Even if I uninstall the Fake GPS Location and disable Mock GPS in the Developer Options, the GPS still does not work.
I tried to use GPS Status or similar apps to Clear AGPS, after all, the GPS still no response, keep searching for satellite...
Whenever I disable WIFI / Data in the location setting, the GPS cannot get any location.
Any method to fix the problem? (any method instead of re-flashing the stock rom)
Remark: I am using Note 3 LTE (SM-N9005) with rooted.
I finally wipe all data + cache + Dalvik cache, and re-flash the stock rom.
But, the GPS is still not working...
Anybody has any suggestion?
Hey,
as stated in the title, I have a problem with my H500f.
It's locking onto GPS sats. in like 15 seconds when I am outside and have the "GPS Test" app open, that's okay,
BUT when I open apps like Google Maps/Pokemon Go it looses the GPS fix and can't lock onto sats. for ages.
Whats the issue there? Any help is greatly appreciated!
Thanks in advance.
Hi Dwynr,
I discovered that my terrible location tracking was due to no longer having GPS, but relying on identification of nearby wifi networks. I used the GPS Status app and confirmed I wasn't getting a single satellite fix, even after AGPS refresh (see below). The (stupidly) simple fix in my case was to tighten all the screws inside the case, which then reconnects the loose GPS antenna. Saved me 3 weeks of RMA, at least.
If this doesn't help - when reading around I kept coming across the suggestion to refresh the AGPS data. If that's not possible within GPS Test, try it with GPS Status, which is also a free app and takes about 10 seconds to empty the AGPS cache and download a fresh dataset.
No real satelite from flat earth all use tower telecomunication informarion radius