yashsingh1/xdaforums huggingface dataset:
[Galaxy S I9000 General] benoitb85:
I updated my modem yesterday from JPY to ZSJPG and my first test shows good improvements:

Green is JPY, red is ZSJPG. In France, we drive on the right side :D

I usually don't drive through several trees while going to work in the morning :D

I didn't show the start of the trace, because this is my home. But usually I get a fix only 50 to 500m after I leave my home, and with ZSJPG I got a fix while closing my windows before leaving !

I have to test it more but it looks like huge improvements, and a good GPS now.
[Galaxy S I9000 General] Jekkaman:
What GPS program did you use to monitor your track?
[Galaxy S I9000 General] benoitb85:
MyTracks. You can then export to google maps or to GPX/KML that you can load in Google Earth (what I did here).
[Galaxy S I9000 General] betoNL:
Just download sgs toolbox from market.

You can access gps test mode from there...no need for typing codes evrytime...
[Galaxy S I9000 General] benoitb85:
I tried Navigation yesterday and it was ****ty as before (same or only slightly better).

My girlfriend's ZTE Blade worked really well in comparison. I'm confused, I don't know why I have a nice track and at the same time the Navigation performs so poorly.
[Galaxy S I9000 General] adewes:
I have tried many tips for I9000's gps but it is really hopeless. It will get a lock fast for me (max 20secs) but it will keep loosing gps signal very often, no matter what rom or application I use.

I guess it is time to try some hardware mod...
[Galaxy S I9000 General] Valeo:
Have you tried the leaked Gingerbread ROM (JV1)? I'm not saying it'll be any better, but for me my GPS has gone from just plain **** to **** hot since making the switch (almost) 4 days ago.
[Galaxy S I9000 General] betoNL:
And...what about the solar flares??:

http://xdaforums.com/showpost.php?p=12097633&postcount=417
[Galaxy S I9000 General] Jekkaman:
Can you use the Gingerbread modem with your stock rom?
[Galaxy S I9000 General] AlexAlien1966:
I found a solution to my GPS issues that is slightly more complex:

1. I use GPS Aids to update LTO file to get faster first fix - works great!

2. For apps like Google Navigation or MyTracks i use Tracker Booster to get accurate data, for Locus i do not need Tracker Booster.

Now i have very accurate tracks and navigation without issues!

Additionally i used the suggested settings as base, but did not use the Nexus data.

Without the above tools i still face issues.

Don't think Samsung will fix this - or is able to fix it ;)

Cheers

Alex
[Galaxy S I9000 General] betoNL:
Now you just need a real good onboard navigation program like for instance, iGo 480x800 and your gps experience will really improve :cool:
[Galaxy S I9000 General] herbert1:
The "good onboard navigation program" doesn't improve the GPS, it just guesses better than other where you shall be if you follow the planed route correctly.
[Galaxy S I9000 General] betoNL:
I meant to improve the GPS experience

and not the gps itself

Google navigation is just not reliable in many regions and is dependable many times on the "health" of the 2G/3G/4G networks.

And no gps navigation program will " guess" it right if the internal gps is not functioning properly
[Galaxy S I9000 General] adewes:
Not yet to be honest, I'm waiting for the final version (which is supposed to start showing up in next 2 weeks).

Did you see slight improvements regarding losing gps signal? That is what really matters for me as accuracy is ok!
[Galaxy S I9000 General] adewes:
Oh well that may be helping to worsen our Galaxy's GPSs a little, but I have another gps device in my car from TomTom that does not seem to be suffering from those solar flares :)

Google Navigation is ok if you are in a urban area, got good 3G connection and also do not need basic features like street-avoiding.

My recommendation for a good offline gps software goes for Copilot Live (Igo would be excellent if it was smoother, its interface/maps navigation is just too lagged, I feel like in a powerpoint presentation).
[Galaxy S I9000 General] betoNL:
I agree with almost everything you wrote, except what Google navigation and iGo concerns:

Google navigation misses many features, got synch problems (no matter the state of the 3G coverage) and even IF you have a good data-plan and good 3g coverage, what happens when you are abroad? Roaming costs?

And what iGo concerns: iGo navigation is RAM hungry...

If you have the time and the possibility to run these tests that would be nice:

Instead of using iGo Motonav 480x800, try the iGo 8.4.2.139242 (480x800) , BUT before starting any version of iGo, try to release some memory using the stock task manager or any other task manager ....

According to my experience with many other standalone gps devices, you need at least 180 MB of available Ram to run iGo smoothly ( you can see it in action on my first (very old) gps video...

If you do it, pl report the results here or pm me if you prefer...(em português?)

Greetz

P.s.- My other gps devices equipped with the sirfstarIII chipsets, also handle the Solar flares:eek: better.....but they are definatelly behaving differently in 2011..:cool:
[Galaxy S I9000 General] betoNL:
great posting

Man, I am really gratefull for this post....

Saving it to read it with more time and attention later....:)

P.s.- Just to clarify; eventhough I posted in this thread many times, I just saw/found your post today :o
[Galaxy S I9000 General] betoNL:
@ RCinFLA :

A couple of years ago, experts of the GPSPassion forum performed a comparison test between devices equiped with a sirfstarIII chipset and others with a-gps and the conclusion

was as I quote:

CONCLUSION

While the Qualcomm gpsONE chipset of the HTC P3600 performs better than on the Siemens SXG75 Linux Smartphone where it could take 10+ minutes to get a fix, it remains much less effective than the SiRFstarIII chipset used on most current GPS PDAPhones . This comparison also shows the impact of GPS Assistance (A-GPS) to get a fix and reduce the time to guidance. Even the "offline A-GPS" of the Mio A701 helps significantly, while the "Full A-GPS"(SUPL) of the Orange SPV M650 will bring extra speed and more so as the conditions deteriorate.

Overall, the GPS performance of the SiRFstarIII PDAPhones is excellent and does not pale in comparison with the performance of dedicated GPS systems like the TomTom AIOs as seen in this comparison done in the same area. Let's hope the upcoming GPS PDAPhones like the HTC X7500, the Eten X800, the Mio A501, etc...will maintain these high standards.
​

(here is the whole article: http://www.gpspassion.com/fr/articles.asp?id=175&page=6)

To make a long story short:

Business interests are the reason our very expensive smartphones are not equipped with more capable gps chipsets( the ones that dont need AGPS) and having AGPS support instead?

I hope you are still around

Tks
[Galaxy S I9000 General] pj415:
try these settings, they work pretty good with my phone, seconds to connect. anyway id like to hear from you if it works for your phones

these are my application settings in LbsTestMode

session type >tracking

test mode >s/w test

operation mode >standalone

start mode >hot start

gps plus >on

dynamic acuracy >on

acuracy >1

gps logging >on <----this is very important
[Galaxy S I9000 General] betoNL:
Hello there

Why? Could specify why it has to be on?

Tx
[Galaxy S I9000 General] ssarwat:
GPS fixed with Gingerbread

With Gingerbread gps is fixed.

8 secs to lock on 11 satellites, accuracy 10 meters.
[Galaxy S I9000 General] mzone1510:
Try changing only this one setting in LbsTestMode

operation mode >MS Based

instead of 'Standalone'

This one simple tweak saved me a lot of frustration and gives me a lock within 20 secs (MAX) compared to like 3-4 mins or no lock at all earlier...
[Galaxy S I9000 General] allotrios:
i got an early model with a defective antenna (when I press the sticker, the signal improves dramatically)

has anyone had the same problem and resolved it?

Edit: I managed to get the GPS working by placing a small quantity of blue-tack on the uppermost part of the gps antenna sticker so that it presses down on the antenna when I close the lid. I used to get 1 satellite in view with strength at around 15 (using gps test) and no lock. Now I get 8-9 with signal strength well above 30 and lock within 10 seconds.
[Galaxy S I9000 General] xdafann:
Thanks a lot ill give it a try !
[Galaxy S I9000 General] alelas:
Oh my god. I tried this. This simple thing is making the change I have been waiting for 7 monthis....tried all kind of softwwaare fixes..... Thank you. Thank you. Thanks a million times! I just can't beleive the difference it makes!!!!

See for yourself. The pic on the left is before and on the right is after this simple fix!!!! Same conditions, inside my house, near window, sometimes getting Signal to Noise 44-45 now:) Never seen these figures before ever even on the street. Will check during drive and keep posted. Currently on JVB stock with JVK modem.

How to fix:

Just open the cover, switch on the GPS Test/Status and press with your finger/nail slightly in the point marked in red to see if it works. If it does, then apply 2-3 layers of insulation tape or blue-tack (as allotrios suggests) to make sure the cover will press slightly on this magic "G-spot" :).

EDIT: I guess both blue-tack and tape are not the best solutions, at least now we know where the G-spot :) is, so better solutions can come up after more people have tested.

Don't forget to thank ======>allotrios<====== if this works for you :)

Swyped from another GALAXY
[Galaxy S I9000 General] betoNL:
Antenna sticker? where is it? Can you guys post an image of this (or a small video)

I have no serious GPS probs, specially since JS8 and Gingerbread, but I could use better SNR values....

Tks.

. .
[Galaxy S I9000 General] betoNL:
Were you outside?

If you were outside, accuracy should be 5 meters...

Anyway nice to hear you got an improvement...

I wish i knew where this antenna sticker is :rolleyes:

. .
[Galaxy S I9000 General] allotrios:
thanks alelas, I am glad it worked for you too

the sticker is right next to the speaker. It is about an inch and a half long running down the right hand side of the phone when you look at is with the battery cover off.

it is black and if you press it you can see the whire underneath. Do not take the sticker off by the way.

edit: you can see in the photo where I put the blue-tack at top right corner
[Galaxy S I9000 General] oswade:
Second this!!! Would be much appreciated :)
[Galaxy S I9000 General] alelas:
Inside the multi-story building, I did not wait for accuracy to go to 5m :) Just wanted to share the excitement.

Just open the cover, switch on the GPS Test/Status and press with your finger/nail slightly in the point marked in red to see if it works. If it does, then apply 2-3 layers of insulation tape to make sure the coveer will press slightly on this magic "G-spot" :) :).

http://xdaforums.com/showpost.php?p=12972756&postcount=248
[Galaxy S I9000 General] josteink:
What worked for me...

I read (almost) the entire first post, and I found that the 2.2 settings worked for my JVB 2.3.3 to bring up AngryGPS.

To my disappointment, all the settings provided were the ones which were there by default and my GPS was performing somewhat lackluster.

I tried using SGS Tools to set the GPS's NTP to europe. This really didn't help much.

I then DLed "GPS Aids" from the market and just forced trough cached GPS data, both Native and LTO. After this I get a reasonably accurate lock even indoors although it does use some time getting it (nope, it's not instant).

Just posted this in case others still can't get it to work and wanted some suggestions.
[Galaxy S I9000 General] Corberon:
I have a very strange problem with my gps on gingerbread. On 2.2.1 I had a quite good gps and I was able to have a fix in about 10-15 seconds with an accuracy of about 10 meters. On ginger the fix time and viewed satellite are still good but the accuracy is now 30-50 meters! I tried to play with the gps test settings but nothing append and I had the same problem with jvk, darky's v10 rom, miui rom and the last official update of ginger. Maybe I'm the only one with a bad gps on 2.3??? O_O
[Galaxy S I9000 General] mab71:
mine's worst.... accuracy is like 600 metres when indoors!:(

maybe i need to change to the ZSJPG modem...

edit: same problem even with ZSJPG :-(
[Galaxy S I9000 General] alelas:
Second that about JVK/JVB after 2.2.1, but....I guess the accuracy reporrts you get from GPS Status or Test or something similar? All Gingerbread ROMs basically use the same GPS daemon and very similar gps.xml settings. When I try to locate myself with Google maps or offline navigation software it's pretty accurate on the street, so maybe it's just the accuracy numbers(?), why not try real-life tests (best is check the tracks)
[Galaxy S I9000 General] Corberon:
Thank you for the suggestion. To be honest I've already tested the gps on a track. I use runkeeper when I have jogging and the only test that I made with it using the JVK made me return immediately to froyo. In any case I'm going out for a little run then I will give it another try and I will report my experiece.

PS: Yes the accuracy came from gps test and gps status (both with the same results). I also tried to change the npt server and use apps like gps aids.
[Galaxy S I9000 General] mab71:
the best i can get outside is 10 metres acc. while i used to get 5 metres before on 2.2.1... this is a frustrating. no wonder they call 'angry gps'...
[Galaxy S I9000 General] betoNL:
When you want to test the GPS, after a fresh firmware install, you should know that the TIFF (time for the first fix) would be long, specially if:

A) full a-gps (supl) is not good implemented or not supported by you carrier.

B) You are not using other types of Agps (assist gps data) that you can get from apps like Gps status or Gps Aids when you download assisting data on demand

C) You are indoors.

When you tweak your phone with all kind of mods or modded roms and even go converting the file system (and re-converting) and flasshing and reflashing Kernels Modems etc.the chances are that you are going to waken even more bugs.

If you install JVB fresh ( I would suggest Ramad's Deodexed) and then go testing the Gps BEFORE all that tweaking I can guarantee you that you going to get better results:

Still indoors or still in range of a wifi spot, open Gps Status and then go outside...

The first lock could take a while but that's it....

.
[Galaxy S I9000 General] betoNL:
Thanks everybody for the" G-Spot antenna sticker" tip, but I guess that the sticker on my sgs was already stimulated enough out-of-the-box..

And if I am not satisfied with the performance of the internal gps chipset, I can always use the external one, which by the way is getting rusty ( see my first gps video made on the "Eclair" period, ...long ago....)

« »
[Galaxy S I9000 General] JJEgan:
but I gues that the sticker on my sgs was already stimulated enough out-of-the-box

likewise it did nothing for me .

That's two of us with decent GPS out of the box

jje
[Galaxy S I9000 General] Landorin:
As someone here once said: use GPS outside, it wasn't designed to navigate you from your bed to the bathroom. :P

Anyways, the fix provided in the first posting (replacing those files by flashing the zip file) worked for me along with ZSJVE, I get a lock in a reasonable time (less than 1 minute) without AGPS tools and accuracy is decent enough compared to what it was on stock 2.2.1, it even suffices for car navigation mostly.

In more dense areas I might fall back to my bluetooth gps, however, as it still loses signal connection completely sometimes, still have to do some more testing.
[Galaxy S I9000 General] reinbeau:
Please, what is this 'insulating tape' or blue tack you're talking about? I'd love to try this, but I'm not sure what to use.
[Galaxy S I9000 General] allotrios:
Blue tack is like putty. It is used to hang things on the walls etc.

http://en.wikipedia.org/wiki/Blu-Tack

you can usually buy it in any stationary shop

insulating tape is this:

http://en.wikipedia.org/wiki/Electrical_tape

either could work
[Galaxy S I9000 General] mab71:
i know its intended for outdoors, i'm just comparing.... cos on 2.2.1, i used to get 70 meters accuracy indoors.... 5 meters outdoors. now the best is 10 meters outdoors
[Galaxy S I9000 General] allotrios:
I think you need a military grade GPS to get real 5 meter accuracy

20 meters is more realistic

I may be wrong

http://www.kowoma.de/en/gps/accuracy.htm
[Galaxy S I9000 General] Landorin:
deleted (wrong thread)
[Galaxy S I9000 General] betoNL:
You are a bit wrong

I have a couple of standalone gps devices (all domestic of course) and all equipped with SirftstarIII chipsets

They all get accuracies that fluctuates between 5 and 10 meters as long as I am OUTDOORS and after a while driving it stays at 5 meters accuracy as long as the environmental conditions dont DRASTICALLY deteriorate.

Our sgs,s got another kind of chipset, not as efficient as a Sirfstar3 (or alike) so accuraccy fluctuates a bit more. Some car navigation programs such as iGo, are optimized to compensate an eventual faulty performance of the internal gps chipset, but you can get in trouble when using other programs like Maps or Aura Sygic.

My 2 cent

« »
[Galaxy S I9000 General] herbert1:
Mine is often very very wrong about it's accuracy... I suspect that samsung (or whoever is supplying the GPS driver) fiddles the data in order to make them superficially more flattering.
[Galaxy S I9000 General] fallenguru:
Am I the only one where GPS is working beautifully out of the box?
[Galaxy S I9000 General] wyvernwaddell:
I think you are.....our at least one of very few. Congratulations!
[Galaxy S I9000 General] JJEgan:
One of us few band of brothers .But their are one or two on here who will say you have not tested in the correct manner .

jje
[Galaxy S I9000 General] Widdly:
Well, I have an SGS from early october, so pre oct 10, my wife also has one since half Feb. My GPS is shabby or worse, losing fix when running in open fields with blue skies. No matter which modem (tried them all) settings, GPSapp, fixes or aids. My wife's GPS is great and straight as an arrow. In GPSTest app hers is consistently getting better ratings (40+) than mine (around 32ish. If I'm lucky) and is using all sats for fix where mine usually leaves some out.

I haven't read all the pages in this thread, but it would be nice if there were some indication how old the phones are that get better/worse performance. There is a manufacturing date on the battery that could give some indication. Mine is from 2010-09-10. Maybe there really is something to this October redesign.

Maybe I could buy a new one and sell this one on Craigslist. Is there another phone that gets better GPS? But that AmoLED screen is so beautiful...
[Galaxy S I9000 General] reinbeau:
Mine is 1007 and the GPS is ok, not great, but it works.
[Galaxy S I9000 General] Shocky2:
I tried this fix the other week and afterwards I couldn't get a lock at all, in fact the GPS has got worse as new firmwares have been made available.

Before I could get a few locked but it was unstable but now nothing at all, I might as well not have a GPS.

Seems crazy that users here need fix to this, this should has been fixed by Samsung, updating the design to correct a hardware issue is great but what about the millions of handsets out there that still don't have a working GPS. :mad:
[Galaxy S I9000 General] Widdly:
I use mine to track my running with the Runkeeper app, so does my wife. Where my wife's SGS hardly ever looses track and produces fairly straight lines along the roads mine is swerving quite a bit and actually just stops tracking regularly. Just yesterday we were running together and mine lost it at the 7 km mark on a tree lined road through farmland with a blue sky. Last week mine had 400+ meters (quarter mile) more than my wife's because of the swerving it does.

Accuracy is slightly more important when tracking running than with navigation where an app could lock to the nearest road on the map. At least that seems to be how Tomtoms work. Google maps doesn't, though. Last weekend we went to Amersfoort city centre where Google Maps lost contact completely among 2 story high old houses. No high risers there.

I'm on Gingerbread Criskelo v34 JVK. Currently.
[Galaxy S I9000 General] fallenguru:
Do you happen to have a source for this by any chance? I've heard rumors flying about about a magical October cut-off date, but nothing definite, least of all which date to check.

FWIW, mine came with 2.2.1 preinstalled, build date 2010-10 and was fine.
[Galaxy S I9000 General] Corberon:
I've just tried my gps on gingerbread for some days with several open-field tests and I must say that the accuracy problem is very bad for me and that the gps is unable to work as is was working on froyo. Now I'm a bit unsure on how to proceed because I would really like to keep ginger (newer version with all the developments and some great roms like the miui that are getting always better) but at the same time the gps is very important for me then maybe it would be better to downgrade to a 2.2.1 rom again. Maybe I should try the hardware fix to the gps but removing the plastic that close the sgs seems very dangerous and in any case the gps was working well on froyo then my problem is probably connected to a software issue

To report my situation:

on froyo--->fast fix and 10-15 meters of accuracy on gps test, gps status and google maps with a usable gps (not straight line traking but good enought)

on giger----> fast fix (as froyo) and 30-50 meters of accuracy on gps test and status. 20 meters on google maps but the position is completely inaccurate
[Galaxy S I9000 General] fallenguru:
Apparently 2.3 for the SGS was pulled again, maybe this is why?
[Galaxy S I9000 General] allotrios:
hi Widdly, I have an old SGS too and I managed to improve the GPS performance quite a bit. Look in this post:

http://xdaforums.com/showpost.php?p=12972756&postcount=248
[Galaxy S I9000 General] reinbeau:
Yes, I also use Runkeeper, and was pleasantly surprised at how little I swerved off track, but always at least once on any walk. Funny how they vary. Mine is older, as I noted above, 1007, which I believe means it was made in July of 2010.
[Galaxy S I9000 General] betoNL:
Well...define "working beautifully":

Which gps programs are you using?

How many test drives?

When you buy a device (ANY DEVICE) with AGPS support, this is in fact bad news...if a device needs "assist" to speed up the first satellite fix, it will probably struggle more (than other devices with a sifstar chipset or better) to get and keep good SNR values...

If you look at my videos (on my signature) my sgs is doing allright out-of-the box but always with some assist (Downloading Gps data in order to speed up the first fix during a cold start.

Those videos were taken when I was on Eclair

Then it got better with Froyo 2.2

and then even better on 2.2.1 (JS8)

On Gingerbread JVK or JVB, I am getting faster locks with more satellites but accuracy fluctuates more....

Testing the gps only by cheking how fast or how slow your device is getting the first satellite fix during a cold start, it's not how you should do it

You do that by driving and checking if it takes you from point A to point B flawlessly (specially on a long trip)....

. .