yashsingh1/xdaforums huggingface dataset:
[Galaxy S I9000 General] Case_:
Then perhaps explain to me how is it possible that I regularly experience 5m accuracy fix in LbsTest and 50+ meters off localization in Maps/MyTracks...?
[Galaxy S I9000 General] aurelm:
I can only guess that your unit has other issues. Did you leave LbsTest in the background after getting a good lock.

Now you just got me thinking that soon I'm gonna experience this also.
[Galaxy S I9000 General] TravUK:
Or they all have the same issue, they just manifest in different ways.
[Galaxy S I9000 General] seraphine:
I am running stock JG5 + Paul's Modaco custom ROM and I just used GPS to get myself home (Navigation [brut]).

I've not changed any of my GPS settings, and it held to lock 100% of the journey and never wandered of the roads I was on -- a mix of highway + smaller roads + finally my HIGH density housing area.

It did all this on the passenger seat next to me too.

Whilst driving, every so often the blue dot would turn into blue dot + circle, to signify accuracy was off a little, but it never affected the results...
[Galaxy S I9000 General] Case_:
Sadly, I did, many times. It doesn't really make a difference - the GPS is simply unpredictable. Sometimes perfectly accurate, sometimes bloody awful :/
[Galaxy S I9000 General] aurelm:
Well. I just updated to jm5 and seems to be working without issues and without any tweaks.

Cheers.
[Galaxy S I9000 General] ssj4Gogeta1:
What's the difference between 'Hot start' and 'Cold start' modes? What effect do they have on the behavior of the GPS?
[Galaxy S I9000 General] AllGamer:
install ROM official JH2 GPS fixed
[Galaxy S I9000 General] AllGamer:
GPS works great in stock

As the title says, the GPS never had any problem, it's been working great since day 1

That was 30+ days ago since the phone was released, no lag fix, no gps fix, no app killers

I was bored today so i snapped this just a moment ago

all that in a rainy day
[Galaxy S I9000 General] andrewluecke:
Got any tracks though?

I normally am the first to defend Samsung to death.. But even I'll admit, the GPS in late stock firmware is OK, but nothing to boast about. It's probably sufficient for my needs though, but it doesn't even compare to my garmin forerunner 305 currently.

PS. 5m accuracy means nothing. I've seen my actual position on the map reside outside the accuracy boundary a few times.
[Galaxy S I9000 General] TravUK:
Normally I avoid poking trolls, but I'm kinda bored today. We're well aware you cant tell the difference between a broken and working GPS. However, for those who can, the simplest solution remains; reset your GPS driver either through the settings menus, or on the drop down from the home page if you're on a newer ROM.
[Galaxy S I9000 General] Kilack:
Sorry but what is that screenshot meant to prove? apart from that you obviously have not read the GPS threads.

eg the problem is the location being reported by the GPS and keeping it accurate while moving etc.

Your little screenshot is as valuable as a photo of a wall in this case.
[Galaxy S I9000 General] Bynar010:
Hahaha, my gps works, look at my gps test result while standing still! FFS.

Jesus christ, you bored today or something?
[Galaxy S I9000 General] vcespon:
It depends a lot on where a when you do the test.

The attached route was captured a while ago, walking through mostly open spaces and streets. It's mostly correct. There's one jump on the bottom right because I pressed power button and lost signal for a while.

The two turns on the top right are correct too, I did not follow the street till the corner.

It still keeps overcompensating on turns. It keeps going in the previous direction and after some time it goes back to the center of the correct street. (see the first turn to the right on the top)

In narrow streets is completly different of course, not that any GPS is going to do magic, but the two other phones I had were better at not doing random jumps in random directions.
[Galaxy S I9000 General] hardcore:
This track was recorded on XXJPC using Google My Tracks in a car. The phone was placed near the front windscreen.

It looks acceptable, because the GPS reception was good.

http://maps.google.com.sg/maps/ms?h...169935389190903927.00048f328d69e17197e80&z=13
[Galaxy S I9000 General] amwebby:
What is that GPS status app in the first post?
[Galaxy S I9000 General] dckiwi:
Gps test
[Galaxy S I9000 General] Kil:
You really are annoying... in every GPS-topic, you're posting there never was a problem, and there still isn't. If that's the truth, why are so many people having problems with it? Maybe your GPS does work great from day 1, maybe you just don't know what you're talking about. But stop saying there is no problem, if you have to something, say there's no problem with YOUR sgs.

I use GPS a lot, if i knew this before i bought it, i wouldn't have bought it. People like you make others believe everything is fine, and then they'll have to find out it doesn't work AFTER they bought it. Maybe if you start giving useful advise people will use the stuck up "Donate" button in your sig.
[Galaxy S I9000 General] boomerbubba:
An update from across the pond, where I have been testing the Sprint Epic 4G, to my knowledge the only SGS variant whose GPS Samsung has actually said is now "tested and validated."

As far as accuracy goes, I have tested the Epic simultaneously against my venerable G1, and I find the results to be quite satisfactory, both walking and driving. Here is a walking test, for example.

The Epic has a new utility called GpsSetup, which apparently supplants the old LbsTest menu used on earlier platforms. Don't know about drivers specifically, but the tracking results bode well.

There are two new bugs that I think are new to the Epic:

1) GPS Test shows a constant 30.0 meter accuracy no matter what, as if this value is hard-coded in the firmware.

2) After a prolonged period of not being used, the GPS sometimes needs to be reinitialized. Rebooting does the trick. I would bet that the latest version of GPS Status, which now includes some active functionality to empty and reload the satellite ephemeris data, also might do the trick.

The SNR levels to me seem moderately lower than other devices, but without a detailed logging utility I can't be sure how much. Others perceive the difference to be larger that I do.

For discussion about testing of the Epic, see this thread on another forum.

Edit: Sorry, I meant to post this in the main GPS Poll thread. But here it is.
[Galaxy S I9000 General] TriC_101:
I don't use Mytracks and I don't care too.. but for what I used my GPS for like Google Navigation I do not have one issue with it at all... and I used it almost every day....
[Galaxy S I9000 General] d3a:
like others have said it works great when not moving, but when driving around or what not, the gps is very wonky.
[Galaxy S I9000 General] AllGamer:
i use it on a daily basis for the driving, to navigate through the traffic areas and use small back streets, so a working GPS is essential to be able to use navigate the maze of tiny streets
[Galaxy S I9000 General] andrewluecke:
Yes, and yet, you've never actually posted a track. Whilst I agree for many of us it's good enough, you've never actually posted a track which would show how accurate your GPS is..
[Galaxy S I9000 General] TriC_101:
Mine works great with Google Nav.. not one issue.. I even went on a 800km trip and it was fine all the way.
[Galaxy S I9000 General] mickeko:
Oh great! And here I thought that the problem with my tracks was with the gps, but in reality it is I who have walked in swamps and impassable terrain. Thank you for clearing that up.

It works in some regions and is crap in other. No sgs has a good gps around where I live. I've tried several on same and also on different firmwares. Other phones are way better.

"It works for me, so there's no issue" - A Jobsian statement.

Sent using my personal Dis-organizer GT-I9000
[Galaxy S I9000 General] AllGamer:
GPS settings as per request
[Galaxy S I9000 General] andrewluecke:
I find it odd you were eager to post your settings, but once again, have never posted a track.

Do you sell mobile phones or are you associated with Samsung in ANY way? I'm not really into conspiracy theories, but nobody talks up GPS like you do, mysteriously never posting tracks..
[Galaxy S I9000 General] Bynar010:
Hes full of sh1t.
[Galaxy S I9000 General] Gh0stw4lk3r:
This is a track with my JM2 with Voodoo Lagfix (1 week old)

i had no problems while navigating, the only drop in signal is when i drove through a tunnel :)

so personally i don't have any problems (yet) with my gps

track:

http://maps.google.nl/maps/ms?ie=UT...0.617294&t=h&z=11&iwloc=00048fb185efcb4319fd2
[Galaxy S I9000 General] foxbat121:
Did you even look at your own track? Besides mostly highway straight travel that is typically easy on GPS, I see you crossed the meadian and drove to the oncoming traffic for a while. And falling off the ramp/bridge a few times as well as plow through parking lot once. Either you were drunk driving at the time or the GPS on your phone really stinks:)
[Galaxy S I9000 General] ghosty_uk:
agreed,

however as i have stated many many times in the other threads, and now im going to do it on here, my first sgs was crap to say the least on gps it would NEVER get a fix, even after changing the data in the lbs test menu.

however my second sgs is still not 100% accurate but is a damn site better then not working at all, it got alot more accurate when i updated to JM1 firmware.

so to the OP there is a problem with some units i know i had one, fortunatly as i use gps alot it only took a few days to find it was sh!t, and got a replacement from the store i got it from, only after running the lbs test menu on both phones not more than 2 feet apart, the old one finding 3 satalites locking to 0, the new one finding 9/10 but only locking to 8 of them so i would say its a very large improvement.

one thing i would love to see is a track created with my garmin navi (dedicated navigation system), not because i belive its better just cuz i want to see what sort of track it would produce, then compare it with my SGS
[Galaxy S I9000 General] andrewluecke:
I do agree locking time is acceptable now, and it is usable for car GPS.

But, when checking the raw tracks, it can be shown that the tracks can get ugly in turns or the moment there are trees.

Either way, usable for fitness maybe, but not really..
[Galaxy S I9000 General] Gh0stw4lk3r:
Did YOU even looked at my track? does it look anything like the other tracks posted here? yes, i drove on the highway, but i drove into town as well, and do you see any hickups there? it shows my pretty smooth lines even on the roundabouts..

so i crossed the meadian for maybe a 100 meters, so it had a minor hickup of a few 100 m on a 60km long track, isn't that what standard GPs accuracy does? it doens't show me on the other end of the town like others do...

this is nothing like the jumping from left to right en front to back tracks as shows before by others.

I know you love to say that the GPS sucks in general, but clearly mine doesn't as much as yours.

i'm sorry for you...but i am happy with it
[Galaxy S I9000 General] milsjg:
Lots of people claims that those who got decent tracks does not know what they doing. Maybe it is the revers. I have had good tracks since mid June when I bought the SGS. Sometimes it has messed up but mostly because my own ignorance of trying to do to many task at the same time when tracking.

I have posted several good tracks in this forum but the skeptics do not read these post because there seems to be a religion that nobody can have a decent GPS. The fact that you have an error do not conclude that everybody has an error. Nobody knows how many has the GPS problem (I am starting to get tired to repeat this mantra). If you want to be constructive and give something back to the society recognize that there are a difference between local, users and maybe the SGS. Come with some smart thoughts of why there is a difference so we know who to blame (if thats important).

Another subject popping up now and then in the forum is the accuracy. Well my SGS is not the best GPS on the market, but be realistic it is a phone not a dedicated GPS. The tracks that you all seems to longing for is hard to get. Your criteria seems to be that it can not be off the track by more than a few meters (< 5 meters) during a fairly long trip. This is not how GPS works, it is not an accurate position you get but an estimation with error of 95%. Normally you can get 5 -10(15) meters accuracy which indicates that the position has a 95% chance to be within that distance from your true position. This means that 5 times out of hundred the position is larger then estimated accuracy.

You really do not know how far away from your true position the fix is, if you do not log every raw point and plot it on a grid (somebody could maybe program this for our SGS). So if the track deviate between 5 - 15 meters it is fairly normal.
[Galaxy S I9000 General] mickeko:
My issue is that it claims better precision than it has. I'd rather have 100m accuracy and can be sure I'm within that area (pretty crappy GPS) than 5m accuracy that is 50m off (Broken GPS).

Sent using my personal Dis-organizer GT-I9000
[Galaxy S I9000 General] w1ll1m:
I did a 50 mile trip and google navigation was accurate all the way. But the day before couldnt get a lock for half an hour. Something is wrong.

btw What is tracks?
[Galaxy S I9000 General] Gh0stw4lk3r:
when the rain clears, i will do a walking test around the area here, i really want to see if it will jump from one side to the other side. will post the track later today.

in the car it has worked fine, the last 10km of the trip was a traffic jam, so didn't go any faster then 10km/u but it is still pretty accurate on that part of the trip.

[edit]

just did a small walk around the building i work in, altough it isn't super accurate, it doesn't let me fly all over the place.

http://maps.google.nl/maps/ms?ie=UT...51.990021,4.377789&spn=0.002445,0.004823&z=18
[Galaxy S I9000 General] foxbat121:
Yes, I did and zoomed in to read the details. Sound like you're just look at a really zoom out scale.

It is not. Zoom in to those round abouts and you know what I mean.

In situations like that, if you have another small road near by, it can easily confuse the Nav software and show you actually travel on a different road. That's what happens to me in about 10 to 20% of time during my trips. I don't ask much. If the damn GPS can stay within 10-meter accuracy as inidicated by the GPS test, it will be fine. But it can't. A lot of times, it offsets 30 to 50 meters of my actual position.

Nope. Yours behave exactly like mine. We just have different expectations. To me, and many others, it is not acceptable. I've been using Cell phone navigation for couple years now. Samsung SGS is the worst I've ever used (that includes two Samsung WM phones and one HTC WM phone).
[Galaxy S I9000 General] AllGamer:
Exactly!, at least now the GPS are not doing those crazy loopy loops LOL :D

all my previous experiences with GPS on HTC phones and dedicated Garmin Car GPS ($60) have been the same.

I've yet to see a perfect GPS device that can be near pinpoint bullseyes accuracy all the time.

New York (the big apple area) is one of the worst places to use a GPS, most times i visited New York with my HTC phones it was nearly impossible to get even a lock

I'm looking forward to my next business trip to NY to test out the SGS reception there :)
[Galaxy S I9000 General] AllGamer:
well said
[Galaxy S I9000 General] foxbat121:
Like I said, I will happily accept 10-meter accuracy. The problem is the SGS GPS can't maintain that for a long trip. For a few times it jumped out to another road nearby (or put me in a middle of a grass field at least 50 meters away when stopped at red light and shows very good accuracy at the same time), it was anoying as hell.

The fact is there are plenty of ppl complain about it. Just because it is acceptable to you, doesn't mean there is no problem with it.
[Galaxy S I9000 General] mickeko:
Tbh, I think even 10 meter accuracy is asking for quite alot... Specially if you're in an area with alot of buildings and other obstructions. Up to 25m is a more reasonable expectation for something that is not a dedicated positioning device. (This is obviously a matter of opinion so I'm not actually saying you're wrong and I'm right, I'm just stating what I feel is realistic)
[Galaxy S I9000 General] foxbat121:
In areas with a lot of high buildings, even dedicated GPS units have problems. I'm fully aware of that. For me, I simply ask for a 10-meter sustained accuracy with no lags in open highways. Is that too much to ask for?

I've used (with a dedicated GPS for backup) my SGS a few times when traveling to some new places. The bottom line is that I'm glad I had a backup GPS with me. Otherwise, I'll probably still be circling those airports right now :)

BTW, my SGS has no problem getting a lock and getting good accuracy (10 or 5-meters). And I can even lock on to more than 8 satellites (unlike OP's unit) even inside my house. The problem is actually use it for real life navigation. It just randomly craps out. From what I read from TravUK's posts, it is some kind of noise issue that affects the GPS randomly. Broadcom seems to have fixed it in late August. And I'm eager to see what kind of fix will that be from Samsung.

My beef with this thread is other than trolling, what the purpose does it serve? Both Broadcom and Samsung ackknowleged there is a problem with the GPS in SGS. The real fix has yet to come (officially anyway) until we see firmwares that are built in Sept or later.
[Galaxy S I9000 General] ghosty_uk:
see my post in one of the other GPS threads, it appears i have broken not only the laws of physics, but also the laws of space and time (suck on that mr hawking, with your 200+ IQ, i can travel throught time and space you can't), where i actually seem to have teleported from one location to another.

that was with my new SGS on stock JF3 firmware, im pleased to report i have not seen such a problem with JM1

here is that track where i teleported:

http://maps.google.co.uk/maps/ms?hl...0818,-1.723652&spn=0.006538,0.021136&t=h&z=16
[Galaxy S I9000 General] AllGamer:
that's a typical lost signal track,

unless you went underground parking/tunner and back up
[Galaxy S I9000 General] Spitfire128:
Guess I just got a little drunk before cycling today then.
[Galaxy S I9000 General] milsjg:
You do not know much about GPS do you? If your expectations are that high, specially with the not so good software My Tracks, that tries to compensate every turn, you better return your phone and get a GPS with error corrections. You claim that you have had better GPS in the old phones. Well, I really want some proof of your claim. Test your old phones against SGS by collecting raw data from the GPSes and compare.

By the way, I also have had HTC and Samsung phones and different GPSes and they do not have better sensitivity than SGS, but maybe better and more mature software.
[Galaxy S I9000 General] AllGamer:
this is one of those that needs a software update

quite obviously this one is no were near accurate enough to be of good use
[Galaxy S I9000 General] foxbat121:
I didn't complain about the lack of sensitivity of SGS GPS. It's the random brain phart that concerns me.

BTW, just read the latest info from another thread that Samsung is coming out with more information about how and when to expect a update to fix the GPS next week. Of course, according to you guys here, there is nothing to be fixed. Everything is just fine. Samsung just don't know what they are talking about. LoL.

EDIT: added the link to the post I refered here: http://androidforums.com/samsung-ca...ive-response-team-over-fcc-gps-complaint.html
[Galaxy S I9000 General] Beards:
For quite a lot of users the GPS does not work within Samsung's advertisement that the device can be used for navigation both on and off road (off road being the main issue as because the device is not following a set road navigation pattern it is left to GPS alone to determine it's acuracy).

If it did we would not be seeing a fix... simple.
[Galaxy S I9000 General] AllGamer:
i had some time today to play with google maps/tracks instead of my usual CoPilot

apps like CoPilot will correct for errors

Google maps/tracks will just use the raw info from the GPS

what i found is rather directly proportional to the speed of traveling distance and sampling rate, basically if you drive too fast, lines will be less smooth and goes off the road a bit.

but over all this track shows the GPS is working fine and it's usable, not like those other ones reported by some that the GPS lock jumps west / east and back again, that is all over the place.

people wanting better accuracy should configure google track to do more sample in shorter distances

here's what it looks like with the default settings

http://maps.google.com/maps/ms?ie=U....904788,-79.286635&spn=0.012306,0.031435&z=16

next test i'll increase the sampling rates

and remember good GPS software like CoPilot and alikes compensates for those misalignment, for driving, biking, walking and regular city use it's no problem.

if you plan to use it for Camping and out in the wilds... you will better off with a dedicated GPS device, battery wise, and also goes for GPS accuracy.
[Galaxy S I9000 General] andrewluecke:
For reference, regarding normal errors. At 1 update per second, it can be expected that there is a maximum of 17m between updates. At 100km/h, 28m between updates. However, next update, it should be back on track.

How are you adjusting the sampling rates by the way.

One thing that is worth noting though, is that from what I see, the area you tested this in isn't very tough for a GPS. In forest, from what I saw, this GPS probably couldn't work for car.And, have you noticed a whole lot of your map is slightly offtrack? That makes it fine for copilot, but the consistency at which the errors are maintained at times of 10-25meters makes it inadequate for fitness. In fact, once zoomed in, you'll notice that rarely the GPS track actually is sitting on the road..

For an interesting experiment though, sit your mobile in a single spot for 20 mins, and be awed by an awesome looking star shape.

Regardless, I have no problem using this for driving in basic places, but I am a bit concerned still.. Either way, I'm not doing any testing until Froyo. It's a waste of time.
[Galaxy S I9000 General] darkoroje:
Please stop saying it is no problem, I have tried Copilot and there are frequent losses of GPS lock. Also the GPS is inaccurate: if there are two roads close together, often it will think you are on the other road instead of the one travelling on and will start re-routing. After a few seconds it changes its mind and you are on the right road again.

This is with JPC firmware by the way. I had my TomTom device active as well, and an iPhone, and none of them had any problems tracking the car.
[Galaxy S I9000 General] exadeci:
Well car gps use at least 24 satellites you can't really compare.

For the ones giving prefect tracks, that doesn't mean that the gps is working perfectly it's juste that when you are in a car it seems to get a better track because of the speed and maybe the software put a strait lign instead. Because I had a fw that worked perfect at 130 km/h in a car it was the I9000DDJG4 I had a perfect track but who cares ? Because when I was walking I never had good fix and I'm living in paris so there should be no problem and there wasn't with my iphone 3gs :s
[Galaxy S I9000 General] foxbat121:
There are total of 24 satellites for the entire GPS systems. You will never see all 24 at the same place. You typically see 10 to 12 tops.

Car GPS sees the same satellites as your phone does. It may have better antenna design. But that's about it.
[Galaxy S I9000 General] nicoloco:
May I add that the gamin is not a car gps but a watch....

And I confirm that you can't compare it with the sgs...it's way better.

If I didn't already have a watch I would buy a garmin as the sgs can't do what my iphone did