yashsingh1/xdaforums huggingface dataset:
[Galaxy S I9000 General] darkoroje:
As it was explained many times in this and other threads, getting the lock is not a problem, keeping it is. It is true that newer firmwares have improved getting the lock while stationary, and that probably explains why one phone got the lock and the other didn't. However when you start moving (in a car) the GPS will start lagging behind the car and will lose lock from time to time. This has been improved considerably in the latest JPC firmware but is still bad compared to other phones.
[Galaxy S I9000 General] darkoroje:
There are so many reports all over the Internet about GPS problems with Galaxy S that it is obvious that a significant number of users are having problems. After all Samsung themselves have acknowledged it in their various Twitter posts.

A GPS in a phone can, and usually does, work as well as a dedicated GPS navigation device. I have personal experience with iPhone 3GS, iPhone 4 and Nexus one - all of them had perfect GPS and were able to navigate just as good as my TomTom.

Please do not dismiss all the users that are reporting GPS troubles just because you got one good track on your phone.
[Galaxy S I9000 General] ghosty_uk:
i was mearly stating that one phone got a lock where the other never did, and yes i am aware its keeping the lock that actually matters, i used to use a touch hd (blackstone) and that neve dropped a signal, or if it did i neve noticed it.

i am awre of this also, i stated my first SGS could not even get a lock, this second one however seem to be alot better in terms of locks gotten and keeping up with me, ok so its not perfect yet but is a dam sight better then the first SGS i had.
[Galaxy S I9000 General] Fatherboard:
Good for you, dude. however, this doesn't change the fact that it's not the situation with my unit (and some others, as well).
[Galaxy S I9000 General] Case_:
I've tried JPC today (wish I didn't, but oh well) and noticed the same thing - the GPS is definitely not as good as on XFJM6.
[Galaxy S I9000 General] JaGuR:
Just wondering, if anybody thinks, the poor GPS performance has anything to do with Samsungs, filesystem they are using ??

I have just installed the voodoo-lagfix, the one that completely replaces the rfs filesystem, with ext4.

And now the ANdroid memory managment, seems to be working properly, freeing memory ,when need be, unlike before, and all lag is gone.

Also, after trying My Tracks, it seemed pretty accurate, on an old firmware, that isn't supposed to have a GPS fix.

Before with My Tracks, was pretty wonky :/

Thoughts, is this possible, that filesystem is stuffing GPS ?
[Galaxy S I9000 General] TriC_101:
I notice this to a bit.. it seems to lock faster. after the lag fix.
[Galaxy S I9000 General] JaGuR:
Here is a Track I recorded with My Tracks, with standard firmware, after installing the voodoo-lagfix

http://maps.google.com/maps/ms?ie=U...6.767453,153.115296&spn=0.03073,0.065961&z=15

looks perfect :)

I don't have any pre- lag fix though to compare
[Galaxy S I9000 General] Roy Ngan:
XFJM6, Note that Landscape capture more satellite signal compare with Potrait

Do you consider this as good or bad?

ZSJH1,
[Galaxy S I9000 General] sanktnelson:
probably not the file system as such, but the GPS problems may well be related with the lag to some degree. See my post about 40 pages ago. Unfortunately I can't test it, returned my SGS two weeks ago.
[Galaxy S I9000 General] Beards:
Maybe this latest release does include the Broadcom drivers but only a Beta update to the GPS fix...... ;)
[Galaxy S I9000 General] Roy Ngan:
GPS issue on SGS? give me a break. :p

Firmware: XWJM7

12 in view, 11 in use
[Galaxy S I9000 General] TravUK:
impressive picture, but it says you're doing 45mph.....
[Galaxy S I9000 General] Fatherboard:
heh... LOL!
[Galaxy S I9000 General] JaGuR:
Was in a car
[Galaxy S I9000 General] Roy Ngan:
Yes, I just need to shake the car dock to capture the image. Still focus on the road. :)
[Galaxy S I9000 General] TravUK:
:)

What's it like for lag and accuracy in the corners? JPC has good lock, but lags and drifts horribly wide when cornering.
[Galaxy S I9000 General] Roy Ngan:
I'm not drifter. Didn't try that at corner. :)

I notice I capture more satellite while I'm on the move, not that good while the car is station.

when I was driving in the city, between the tall building, the signal is not that good either, can only get 6 - 8 in use

Tonight the sky is clear, I was driving a bit
[Galaxy S I9000 General] andrewluecke:
Out of curiosity, decided to find out what the fuss was about and tried it in my car today, whilst driving around on hills with lots of trees. Using XXJM1(rev3/new version) on an i9000international/singtel.

http://maps.google.com/maps/ms?ie=UTF&msa=0&msid=106243025571513935041.00048f35ee6f6003e25d9

To be honest, I was expecting a lot worse judging by the way some people are acting.. It does look quite bad. First half is a good case, second half is bad case (dense forest, winding track).What's interesting is that you'll notice that the MOMENT trees come, it starts going crazy..

It's a pity I didn't bring along a garmin forerunner to compare.. But what I'd like to see, are more test tracks (even with other devices) to compare with poor conditions and normal.

Btw, someone mentioned that they thought the refresh rate was a bit low causing problems, but 1hz = a maximum of 17meters error at 60km/h.

It looks as though when accuracy drops though, they might do silly stuff like jump to the center (whilst other devices might use previous velocity figures to

provide more consistent results, because if you were travelling 100km/h before, its unlikely that in 1 second, you'll be 200km/h, and they should just continue the way they did before, unless the predicted point is outside the accuracy bubble). But this is just speculation again..
[Galaxy S I9000 General] ghosty_uk:
right whiloe on my way to mcdonald's yes im fat and was hungry, i thought i would try something, im running XXJM1 build05 #2, i set it to use wireless networks and gps obviously, i also used google navi in the foregraond but let mytracks running in the background.

this is the track i got:

http://maps.google.co.uk/maps/ms?hl...0572,-1.750377&spn=0.001634,0.005284&t=h&z=18

which is more or less perfect, what does suprise me is at no point did it do its normal thing and wander off anywhere, even at teh start and end (where it nomally does) or come to think of it the 3 times i stopped, it seems to have given a consistant track, i will admit it does wander off the road to nearby buildings, but in terms of following my path it is pretty spot on (if it locked to the road).

this is done without lag fixes, only std JM1 firmware, and apps installed.
[Galaxy S I9000 General] johnlen01:
Great for me

I looked at the last two posts with the tracks.

For me this range of errors is normal.

I'm used to travel with a tom tom gps and few times when on a train I tested it, for fun I turned it on and it was always trying to point me on the nearest road.

It's build to know the roads and tune to point you directly to it.

That is why by using it on the road its 100% accurate.

For me using a cell phone gps its not allways spot on.

I did a test yesterday with a Iphone 3 and it was worse then that.
[Galaxy S I9000 General] boomerbubba:
Meanwhile, across the pond, we have had a full day of the new Sprint Epic released into the wild. (Not to be confused with earlier hacks here trying in vain to make the Epic firmware run well on non-Epic devices. This is the real Epic 4G.) This public release spawned the usual confusing and confused anecdotal comments, which of course makes it difficult to find the truth. But we are starting to see some more detailed test results.

Some highlights:

1) On satellite locking performance, there is an obvious new bug introduced that is unique to the Epic: Multiple users report that GPS Test shows multiple satellite locks. But many of them say the reported accuracy confidence is uniformly 98.4 feet, as if this magic value had been hard-coded into the firmware. The effects of this bug on higher level apps are unclear.

2) On accuracy, there have been some moderately good tracks published, some moderately bad ones, and some very good ones. This is my favorite so far, showing a rather demanding walking track successfully executed in a parking lot. Look close to get the picture. :)

3) One user says a Sprint tech support employee told him there is a "known issue" with the Epic GPS, and another commenter says a Sprint district manager told him a GPS fix is still planned.

I just bought an Epic myself, but have not had a chance to test it.
[Galaxy S I9000 General] tb5...:
im getting 0 in view and obviously 0 in use...

things were working but after i turned off the gps then turned it back on i can't seem to get a fix...

my location is never found... and as stated above i have 0 sat in view...

was there ever a fix for this problem... went back a few pages saw nothing.

im on a bell i9000 rooted + lag fix
[Galaxy S I9000 General] Kil:
Here's my track with JPC, pretty good if you ask me..

http://maps.google.com/maps/ms?msa=0&msid=216727512567146323662.00048f41dbd45f0b4d2ed
[Galaxy S I9000 General] Roy Ngan:
Kil, how did you have that tracking recorded on Google Maps? I would like to conduct that test too.

Thanks.

PS: I saw it, "My Tracks"
[Galaxy S I9000 General] teryz:
Damn you live far from the McDonald, all these km only for a big mac, you sure were very hungy ;-)

PS : thanx for the track pretty accurate
[Galaxy S I9000 General] iverson:
This gps test was done inside in my bedroom and with a very rainy weather..

Are the results any good?
[Galaxy S I9000 General] BronzedDroid:
Not really. The newer firmwares makes it easier to get a fix while stationary, but the only tests that really matter is:

- How does a recorded track of a walk look like

- How does a recorded track of a drive look like

- How long does it take to get a fix (outside)

- Is the fix stable, ie. not disconnecting and connecting to satellites all the time?

- And how accurate is it?
[Galaxy S I9000 General] CommanderROR:
OK, a new one from me with some interesting observations:

I did a trial run on the bicycle, JPC firmware, Lag-Fixed and running tracker Booster. The track deviated quite a bit in some places. Interestingly, on the way back home from work I recorded the track as well, and it turns out the drifts were the same. This seems a little strange, because the places where the red line went drifting through houses was not only in the exact same locations, it was also drifting exactly the same way (as close as I can tell). This puzzles me, because it does not seem like "random error" or bad signal, it seems like some problem in communications between Google Maps, MyTracks and the SGS
[Galaxy S I9000 General] milsjg:
Well I find it OK and I am not the only one.

Track driving with GPS on console shelf, no direct sky.

http://maps.google.se/maps/ms?ie=UT...5273,20.317969&spn=0.004692,0.013797&t=h&z=16

Walk will be similar

10 sec tops. 60 sec to get a good position if in a new place or day.

Fixes stable as far as I can expect (during walk and driving, satellites will sometimes be hidden)

See the map. the errors you see is a newly reconstructed road with new roundabouts.

Satisfy, or if you want I can make you a bad track with memory-program managers and other programs running, hiding the top of the SGS, put it inside certain jackets (just one of my jackets inside pocket has problem) try to walk as close as possible to the houses along the street, walk in and out of houses, try to walk under as many constructions as possible and slow, use crappy programs, do not have time to let it get the first fix, stand on it, edit the google map etc. The list what you can do wrong is extremely long and you should know what you are doing if you want to analyse a crappy track.

And yes the program is My Track that is not so good while driving due to it is to slow.
[Galaxy S I9000 General] BronzedDroid:
Just for the record I wasn't criticizing any particular firmware or the GPS itself, I was just pointing out what is really important to test for with the GPS. Getting a fix from your bedroom isn't on of those things.
[Galaxy S I9000 General] ghosty_uk:
lmao, big mac errr, qtr pounder with cheese ftw!!!

actually it is only a 3.5 mile drive, takes about 5 mins.

the track is fairly accurate, i have not had much of a GPS issue with this second SGS, and that is the first track i recorded after upgrading to JM1 (from JF3), so it seeems that what ever this second one has for GPS seems to work, well more accuratly than the first one i had.

ill post some more tracks over the next few days.

edit: this is a track i did before i moved to JM1 as you can see its still somewhat accurate apart from the hugh spike in the middle.

http://maps.google.co.uk/maps/ms?hl...0578,-1.773026&spn=0.006538,0.021136&t=h&z=16

posted this so you can compare the two tracks, what i will do over the next week is do that same run now im on JM1 so it can provide a direct comparisson.
[Galaxy S I9000 General] atomas7:
GPS xperience

the last week i install NDRIVE GPS and i go from LISBON (Portugal) to GRANADA (Spain) and after to SEVILLA (Spain).

Problems reported:

1. sometimes he disconnect and connect to satellites (a lot of times).

2. the program NDRIVE sometimes doesnt work well and i need to torn off the phone and torn on again to solve the problem.

the gps problem exists and must be solved by samsung.

Im waiting about that.

they continue selling that phone with that big problem and dont say nothing about it...

for me this is unaceptable and i hope in september samsung solve the problem, because if they dont solve the problem i sell the phone and i dont buy anymore samsung things, like tvs, air conditioned, etc....

a big company like samsung must be responsable and comunicate with their customers
[Galaxy S I9000 General] ghosty_uk:
i hear you on that, the first SGS i had would not connect to the gps full stop, howerever as you can see from some of the tracks i have posted, this replacement is fairing abit better (by abit, i mean still not perfect but it is usable).

i have come to the conclusion that some SGS's are screwed from the start and that no ammount of fixes/updates will get them to work, however some that do work (my second one) do improve with the updates posted, mine got a touch better using JM1 fw, so should hopefully improve more when they release the wonder fix that will cure all problems.

how long have you had your phone as i would suggest you take it back to the store and show them its not working, do the *#*#1472365#*#*, set it to get position data (the top option), then when it fails to sow an adiquite signal ask them to try on a brand new still sealed phone, take it out of the box yourself, so you know noone else has had contact with it since it was sealed at the factory, and try hte same, if that new one gets a lock faster and better, it will show the other definatly has a problem. they should be then happy to swap it over, if not then talk to the manager, and if he wont budge tell him your gonna talk to the network provider. if all else fails, talk to samsung (yes i know ther cs is sh!t but if you can prove ther is a problem then they have no choice but to issue a replacement, under warrenty)
[Galaxy S I9000 General] AllGamer:
http://xdaforums.com/showthread.php?t=775450
[Galaxy S I9000 General] enigmameusa:
I'm far from being an android expert, the Galaxy is my first smartphone. But even I know that GPS test shows very little.

I get can 5 metres accruacy etc etc, but as soon as I go for a drive it shows that I'm driving through fields or roads that do not exist, I turn and the GPS goes straight on. It's all about the tracks.
[Galaxy S I9000 General] TravUK:
You're right, but it was a way to show some of the earlier bugs, such as not locking to more than 8 satellites or those with a signal strength under 20db. Those were among the first bugs fixed, although in the previous picture, that's taken from a ROM without the fixes.

The newer ROMs really need un-snapped GPS tracks to test with to show how well they are working, and there's been some improvement there, now that some of the interference bugs have been fixed.
[Galaxy S I9000 General] larryccf:
TravUK - since you're still around, can i assume you're optimistic about this gps issue being thoroughly corrected -

i've got to make a decision whether to keep this phone in seven days and right now, i'm leaning toward returning it
[Galaxy S I9000 General] Fatherboard:
This post made me realize that the gps behavior depends on your geographical location (i'm from asia). when I tried your firmware, my gps couldn't even get a lock for more than 5 minutes (AGPS's on). when i tried XFJM6 - bad results as well. JPC seems to suit best for me.

I bet you'd never get a decent lock if you travel to asia with your device, running this firmware.

Hopefully that the gps-fix which everyone's waiting for will solve this by being "region-friendly".
[Galaxy S I9000 General] herbert1:
One thing I do not understand in the Samsung S NMEA traces, is that the HDOP (hHorizontal dilution) is not the same in each sentences:

In the GGA sentence HDOP is 1.0 (which is very good)

while in the GSA sentence HDOP is 1.6 (which is quite less good).

On my Samsung I9000 NMEA traces I have the same difference (and sometime, the difference is quite bigger ! ).

On my external GPS (BT-338 - SIRFIII), the HDOP is always the same in the GGA and GSA sentences.

Do we have the same discrepancies with the new GPS driver in the new firmwares (JPC-JM7) ?
[Galaxy S I9000 General] Banger242:
Anyone else using 3rd party GPS software? I bought Sygic Mobile maps a couple of weeks ago and the tracking, speed, updates etc are quite good. I am using JM7 now and it is better that JG4 was.

I can't help but wonder if there is lag and or update problem when using my tracks and Google maps. I am under the impression that as you move along the map will be loaded on the fly through the data connection and then your track is over layed by the software. Maybe its just data lag and processing speed that is causing some of the minor inconsistencies especially in the corners.

I definitely am not disputing there is a problem, especially after looking at all the threads that have been posted with some horrendous tracks. I have seen the difference between JG4 and JM7 using Mobile maps so I do believe there is an issue but I can say that with JM7 and Mobile maps I am very happy with the GPS performance. Hopefully it is on its way to being fixed.
[Galaxy S I9000 General] lucent6408d:
android 2.2 19000xxjpc build

hi guys,

I have the latest build and everythign is working great however I did noticed that when i entered the code *#*#1472365#*#* for the GPS configuration screen nothing happens. that code no longer takes me to where I can make any changes. any thoughts?
[Galaxy S I9000 General] AllGamer:
you should see something like this
[Galaxy S I9000 General] lucent6408d:
yeah i know , i have done it before but now when i key in that code all it happens is that the code goes away as it should but nothing else.

also, is there a new rom out with for this froyo build
[Galaxy S I9000 General] Beards:
Okay,

This will hopefully please you.

It's a reply from Samsung to parties myself, Chris & Richard at Clove

It now lets us know it will be a combined GPS Fix & Froyo release with an 'expected' date at the end of this month.

I know we were told some time back to expect it in September but this now stamps it as happening.

The bit about the 'non-talk' is my question I asked Samsung why they have been very silent in providing updated information.

I also explained to them via Clove that there is a strong lack in support service, giving no credible answers which in turn is hurting their name brand.

I'd love to see that Twitter page!!

Mike - you should have already received this reply

Hi Mike, (and Chris and Richard),

The latest information I have is that the GPS fix is included in the Froyo update which is currently being tested internally before release. This update will be available via home update on the Kies software. The current timeline for this is that it will be available at the end of September.

With regards to the “non-talk” comment, we do have a Twitter page which customers can follow, but it has not been a major issue so far. Where is the forum you are referring to by the way? I cannot find it on your Clove website.

Kind regards

Regards
[Galaxy S I9000 General] Roy Ngan:
I don't agree, GPS Satellites are orbiting the earth on the sky, they should be the same. More over I'm in Asia using XFJM6 and other firmware without any issue.
[Galaxy S I9000 General] DagsJT:
http://maps.google.com/maps/ms?ie=U...3063,-2.850673&spn=0.007847,0.026157&t=h&z=16

Completely lost the plot at times, GPS is just awful on this phone compared to other devices like the iPhone, Desire and Nexus One.

Not impressed at all.
[Galaxy S I9000 General] andrewluecke:
The Supl data for some regions might be incomplete/out of date. You probably can't do much about that, except ensure hot-starts work probably (in which case, locking will generally only be slow the first time you start your phone if you use it often)
[Galaxy S I9000 General] darkoroje:
So the legendary GPS "optimizing" update has been further delayed in spite of Samsung having allegedly fixed the GPS problem in Epic 3G. At this point I would not put much credence into anything Clove is telling you. Isn't it strange that Samsung was not able to fix the GPS for over three months (since the Galaxy was released) while at the same time releasing several versions of Galaxy and an Android tablet. I am sure we will hear from Samsung that GPS in Galaxy Tab is perfect and has been "validated" so it can be bought without worry.
[Galaxy S I9000 General] AllGamer:
3 month for Europe, Just over a month for Americas
[Galaxy S I9000 General] darkoroje:
Just saw Epic 4G review on Anandtech and he is saying that GPS problems have NOT been fixed on Epic (http://www.anandtech.com/show/3891/samsung-epic-4g-review-the-fastest-android-phone/10). That is not looking good for other Galaxy variants.
[Galaxy S I9000 General] AvatarReborn:
Yeah the GPS is pretty horrible !

I tried to utilizing it yesterday for the first time and it got me lost :(

All because it lost connection and I missed my turn...

God I hope this gets fixed soon !
[Galaxy S I9000 General] Gh0stw4lk3r:
strange thing is that my 1 week old SGS shows me this on my trip

http://maps.google.nl/maps/ms?ie=UT...0.617294&t=h&z=11&iwloc=00048fb185efcb4319fd2

no problems what soever..

who can tell me what is different? i use JM2 with Voodoo lagfix.
[Galaxy S I9000 General] foxbat121:
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] AllGamer:
how about you try showing a GPS track from other devices that has more accuracy than SGS

all other GPS i've used before are roughly on course, i've yet to see a GPS that works properly on google maps

besides, who's to say google maps are actually aligned the way it should? they could be a bit off.

if you use the GPS with an actual GPS software, it's always on the actual road you are riding, not as shown on google maps

if you load the track on a GPS software, it will be aligned to the roads as it's supposed to be
[Galaxy S I9000 General] xZeDgEx:
So the GPS issues are still here on the new Facinate on Verizon?

http://www.youtube.com/watch?v=l92DDaBQZE0

Wow... are Samsung really this inept at software on thier phones?

Mine was pretty much unusable when I had my Galaxy S. A friend at work who has a Galaxy S (not died yet) cannot use GPS at all. He has not flashed his firmware, its stock from Bell, I did do the firmware upgrade and it made no difference. At times it would work, but those were few and far between. When I had my Nexus one there was never any issue with GPS.