Database Users

Maybe our GPS isn't so bad after all..

DROID with network based location off, GPS based location on
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Vibrant with network based location off, GPS based location on
Same story for one DROID X at this store even with it's AGPS on (there is an option within the location menu for enabling or disabling aGPS on the X), but another DROID X got a quicker fix than both of those DROID's however I suspect it was polling GPS before I opened up maps. The Vibrant pulled that location in about 10 seconds, no "Location Unavail." Msg at all and it was all indoors.

ha thats the same store i bought my vibrant from i can tell your by rainbow and 215 but yeah i havent really had issues with my gps at least that i know of it seems accurate to me

Side by side comparison with my G1 shows me (at least) that the 2 Vibrants I've tested take about 10x as long to get a fix and use about 1/10th the number of satellites.

I haven't had a single gps error since before the vibrant was even released but judging by how many people are I suspect certain batches were defected

Maxy6 said:
Side by side comparison with my G1 shows me (at least) that the 2 Vibrants I've tested take about 10x as long to get a fix and use about 1/10th the number of satellites.
Click to expand...
Click to collapse
Same story for me, except my Vibrant side-by-side with my Blackberry 8900 (can't confirm # of satellites but I can confirm time to get a lock).
Anecdotal evidence isn't convincing me that Samsung is dragging their feet here.

Maxy6 said:
Side by side comparison with my G1 shows me (at least) that the 2 Vibrants I've tested take about 10x as long to get a fix and use about 1/10th the number of satellites.
Click to expand...
Click to collapse
That sounds bad but can we get some guesstimates in time? 1secondx10=10 seconds. 10secondsx10=100seconds..
In MS-Based mode under LBSTestMode (whether or not this actually makes any changes to GPS behavior, that's what I have it in) It takes no time to get a lock.

gps works great for me. I get a lock in doors instantly..... Its a little off though in doors but out doors its spot on. I dont need to find a pot of gold so within 20 feet is good for me.

Locational services work, maybe, one out of five times for me. When they try to locate me, it shows me in a neighboring city for at least five minutes. If I wait forever, it will sometimes finally update with the correct location.

So im at work in a huge brick building. With just my location on it puts me about 10 blocks away. I went outside on the deck at work in a open view, opened google maps again and saw I was still 10 blocks away, I pulled down my notification bar and turned gps on, within 4 seconds it found me right dead smack center of my work building.
I dont know, I dont have any issues though. Thing works great for me...

The thing is, it sometimes works quite well. I haven't been able to nail now a pattern with it. Turning on AGPS helps a lot, sometimes. Other times it fails to download the data for AGPS and drops to standalone mode, which is what it should do, but why would the download seem to fail when the G1 sitting next to it works fine? I've tried various settings for the server and such, all of them work sometimes.
The other irritating thing is when it seems to download the almanac, then proceeds to sit there "seeing" only one satellite (SNR bars in GPS Test). It knows which ones are in the sky, it should use that to get the GPS chip tracking all of them at once, as it has the channels. It's acting like a single channel receiver sometimes. That's a big reason why AGPS is so fast, it knows which channels to listen on, no need to search for signals.
I didn't have the G1 before the GPS was fixed, but it sounds a lot like our issue. The way the SGS acts leads me to think it's software related, likely the GPS driver or firmware. The actual RF performance seems pretty good, sometimes better than the G1 going by the SNR reported. It's just acting like it's often getting poor instruction from the driver/OS level.
My biggest complaint is that Samsung and TMobile are trying to act like it's not a problem. If Samsung can't reproduce it, they aren't trying or they have programmed the GPS chip in such a way that it works in their location. Samsung is a global company, there's no excuse for not testing a flagship device in multiple countries. And in todays market, there's no excuse for not being upfront and honest with your customers. Nor is there one for not beta testing with real customers in every major market you want to enter.
If I were running things over at Verizon, I'd be laughing my way to the bank and telling Samsung to keep their busted SGS. They were smart enough to get more than one manufacturer with a "superphone" and don't need Samsung. Between the Droid X and the Incredible, they have got TMO and AT&T spanked hard.

Yea, how long until their competitors start running ads poking fun at it, like the no jacket required ads last week making light of the iPhone antenna problems? HTC and moto should be all over this.

I am unable to get a lock indoors and outside it takes 20sec to a minute or more to lock on and then it turns on and off sporadically. It will seem to be fine and then it just does not function and then in awhile it seems to be better. I have the MS etc. fix enabled and before that it was not functioning with any kind of regularity or accuracy. I get 1 of 12 in use at the most and most of the time I get zero in use.The accuracy after it finally gets a lock is adequate but not great.I use Cardio trainer on a daily basis several times per day and it is just awful as it locks on and off and leaves me with terrible accuracy. Indoors it shows me about 2 to 3 miles away and most of the time it picks up no location at all. An email I received back from Samsung after complaining stated that they have not found the cause of any problem and they are continuing to try and find the cause and resolve the issue. I called tech supp and they at least mentioned that there might be an issue and could give me no other information. That is not very reassuring to me as the device has been out internationally for some months now and out of the box has had GPS issues. Really makes me question my decision to purchase this device. I do love it but the GPS is a integral part of my usage and it does not look like there is any help anytime soon. I am just past the 14 day period so a refund is not possible. I was holding on to the hope that Samsung would act quickly or even just act on this issue and I guess I was betting on a tired horse.I guess Samsungs track record speaks for itself and it is not too pretty. I really do prefer using it to my N1 it has tremendous potential to be as good or better than any phone on the market.

How's the GPS?

How is the GPS on the G2/Desire Z?
Is it fast? Can it lock quickly on the signal? Is it accurate?
I'm currently using a SGS I9000, and let just say it is quite crap.

GPS is pretty ****ty for me. Not as bad as (I assume) the GalaxyS line, but still pretty ****ty. 30m is unacceptable when my Droid (1) can get me walking around my house.
edit: Lock on takes for-frickin-ever indoors (if at all), and is decent outdoors. Yes, I've run gps status and cleared/redownloaded gps data, before anyone asks, lol.
Again, spoiled motodroid former user. I'd go back but vzw rapes with charges, and I like the G2 aside from the horrid (imo) gps. Ymmv.

zerosx's report is the first negative report i've seen re the GPS - mine's on the money (usually within 10') and 40-45 seconds from cold start to a lock on 4-9 satellites. not unusual to see a lock on 11 sats out of 11 in view
below is a screen capture of GPS Sat map i took, while in the house. It actually had me located withing 10 feet of where i was, until i plugged the phone into the usb port to take the screen capture and it jumped back 10 feet more at the instant i plugged it in.
did a "my tracks" log on a short trip across town - none of the path that looked like a drunk had drawn the lines like on my Vibrant, no cutting across corners at turns, no driving 75 feet off to the side of the road, etc
check the forums - you won't see any threads on the GPS - there just haven't been any issues
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Meh, maybe I got a bad one? I really don't know, I seriously can't get the damn thing working.

i wasn't attacking the credibility of your report, just stating it was the first one i've seen
you might consider taking it back for exchange cause mine is eerily spot on - i say "eerily" cause after the vibrant, being located on the right block of my subdivision while outside, was a lucky day. Inside the house, it wouldn't even lock on one satellite

I have had issues with it picking up GPS in my house as well. Right now I have been looking at the GPS Test app and it still displays 0 satellites. When I go to Google maps my location is close but about 10 m off or so. When I am outside I have not had a problem with it. Yesterday I was able to pick up 4 to 6 satellites within about 40 sec. I'll try out the Tracks app later today and see if it is accurate.

This! GPS Status shows no satellites indoors. It's quite frustrating.
Larry - haha no prob. I didn't give it a second thought, and you're pretty much describing my former iphone4 to the letter. It was... creepy.

The GPS works fine if I just want to lock down where I am but the moment I start trying to use it in my car for turn by turn it goes south quick. It loses all signal and is stuck on "Searching for GPS..." for about 2 minutes then comes back and gives me about 30 seconds of information before freezing up again.
It's an improvement coming from the Vibrant but still not as solid as my Nexus One.

Mine is flawless, locks up withing seconds and it's super percise. The native nav app also works rather well.
GPS is one of the strongest points of my phone.

Mine is pretty accurate.

gps is all good here

Mine Locks way way faster then my old ass G1

GPS is fantastic. Locks about twice as fast as my nexus one does. 5ft-10m accuracy generally.

The GPS has been the best I have had. It locks a lot faster than my N1.
Sent from my T-Mobile G2 using XDA App

Well, today I haven't been able to use GPS at all. No lock. I cleared everything through GPS status and still no joy. Earlier in the week I had trouble, but that was due to a setting I had turned on in Beautiful widgets. I turned it off, and everything was fine. Its still turned off so now I'm left scratching my head. Granted, we're experiencing ****ty weather today due to a Nor'easter, but it isn't that bad, as I'm having no issues with my satellite tv signal. Typically I've been able to acquire lots of satellites (8 or more typically) anywhere in my home, so I'm a little worried, especially since I just past my remorse period and am now into t-mobiles "go **** in a hat" part of phone ownership. Any suggestions? I've done two battery pulls today and GPS is still dodgy. Stuff like this makes me miss tin cans and string.

since you've already noticed one app affecting your GPS, have you thought about backing all your apps up to your SD card (OnTheFLy backup app) and then un-installing them, doing a factory reset and seeing if GPS functionality comes back?

Yeah, I thought about that. Gps started working again a short while ago. I'll probably give the backup/wipe deal a shot tomorrow. Out of all of the apps I've installed that have options concerning control of gps the beautiful widgets home weather widget is the only one that appears to knacker gps functionality. We shall see.
Sent from my T-Mobile G2 using XDA App

if its the beautiful widgets with animations, iirc some folks have complained about that update version
i'm still running the first version, with no problems

It works very well with in 5 feet. I believe the G2 is A-GPS it uses cell towers
and other means too track your location.

I used it in LA all last week when visiting. It was awesome and there was only one time where it navigated incorrectly.

[REF] Ultimate GPS fix for any firmware and any device

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+
I seriously hate the Galaxy S for it's GPS. I mean really hate. Although having improved the fixing with newer firmwares, it is still atrocious while navigating: skipping all over the place and giving wrong directions and above certain speeds (around 140-160Km/h) loses gps altogether.
For me its basically unusable and I was very close to throwing it out of my car window a lot of the time!
Luckily I still had my Holux GPSlim 236 from the times were integrated GPS was still a myth and alongside Bluetooth GPS Provider it works like a charm. Pinpoint accuracy all the time. Finally my Galaxy S feels like my Milestone did GPS-wise.
Of course it is not practical to carry around a GPS receiver all the time, but for those reliant on in-car navigation it's a good solution as gps receivers should be pretty cheap now.
For anyone interested I recommend a Sirf based chip as the app support NMEA.

Any chance of posting a sample Mytrack recording?

haha and that one is over 5 years old!

compuse said:
haha and that one is over 5 years old!
Click to expand...
Click to collapse
And ironically it is so much better albeit much larger than the GPS in the brand new Galaxy S.
I will try to record my next trip when I use the GPS with myTrack.
On the trip I recently tested the Holux on it was 99% accurate almost all of the time. No wrong location, no location skipping and it even registered correctly when I was stopping at an intersection.

Mycorrhiza said:
And ironically it is so much better albeit much larger than the GPS in the brand new Galaxy S.
I will try to record my next trip when I use the GPS with myTrack.
On the trip I recently tested the Holux on it was 99% accurate almost all of the time. No wrong location, no location skipping and it even registered correctly when I was stopping at an intersection.
Click to expand...
Click to collapse
I will try my Holux M-241 with its MTK chipset

I was hoping my old R74 would do the job when in the car but the galaxy cannot even 'see' it. Gutted

You mean the bluetooth our the app?
padlad said:
I was hoping my old R74 would do the job when in the car but the galaxy cannot even 'see' it. Gutted
Click to expand...
Click to collapse
Sent from my GT-I9000 using XDA App

You shouldnt be driving at 140-160km/h

Mycorrhiza said:
You mean the bluetooth our the app?
Sent from my GT-I9000 using XDA App
Click to expand...
Click to collapse
Both. As i understand it, the app will only work with the bluetooth gps as long as the Galaxy can 'see' the gps unit via bluetooth, which it can't.

BottleB said:
You shouldnt be driving at 140-160km/h
Click to expand...
Click to collapse
Why not? Maybe he was on a derestricted toll road like the Nurburgring for example, or he was simply on the German Autobahn, where there's plenty of place where there is no speed limit. Or you're suggesting that you shouldn't drive at that speed anyway?

The only problem I see with the SGS GPS (maybe other people have different problems) is that it just drops all the Satellite locks for some unexplained reason. Once it loses lock it usually can't regain it because you're moving or whatever. When it is locked though I get very good accuracy and it's quick to update. Funny thing is you can watch it in GPS test. I could have GPS test open with 11 satellites in view, and 7 or 8 locked with 20-40+ SNR and then all of a sudden the signals are dropped while the satellites are still clearly in view.
Anyway...I hope Froyo fixes it for me. It's probably different for everyone else.

BottleB said:
You shouldnt be driving at 140-160km/h
Click to expand...
Click to collapse
I live in germany
As for froyo: it doesn't fix the main problem...
Sent from my GT-I9000 using XDA App

I tried this guide and it worked for me:
1. The firsts step is to dial the following codes on your Samsung Galaxy S:
* *#*#1472365#*#* If you are running Android 2.1 Eclair.
* *#*#3214789650#*#* If you have updated to Android 2.2 Froyo.
2. once you finish dialing the codes mentioned above, you will have a LbsTestMode screen on your phone with several option.
3. Now tap on Application Setting.
4. In Application Settings, click on Operations Mode followed by selecting Standalone.
5. Once you are back on Application Settings, tap on Start Mode and click Hot Start on the pop-up.
6. Now select GPS Plus and put it on by clicking the ON radio button.
7. Once done, click on SkyHook and also change it’s value to ON.
8. Now go back to the first screen and tap on SUPL / CP Settings.
9. Once you have done this, tap on Server FQDN Type followed by clicking on AUTO Config.
Once you are through all this hardwork, it’s time to reboot your handset. Once your Galaxy S boots, launch Google Maps and you will get the fix within 5 to 10 seconds. Enjoy GPSing!
Click to expand...
Click to collapse

Unbelievable!
Even if I had all of the other settings allready as described, my gps was unstable (gps test). The only thing I changed was the FQDN (which was something like supl.google.com) and now it is stable and more accurate. It doesn't continously change the sats used for fix.
I can assure you it worked for me!
(stock eclair 2.1 JM2/JM1/JM1)

theraider said:
I tried this guide and it worked for me:
Click to expand...
Click to collapse
With my device I tried everything. It did improve the fixing, but skipping and losing gps is and was always present and I don't really see any improvement since the stock firmware.
Furtonately I do not care anymore since my gps mouse works

theraider said:
I tried this guide and it worked for me:
Click to expand...
Click to collapse
YYYYYYEEEEEEEEEEEEESSS!!!!!!!!!!!!!!
I've never had a GPS fix INDOORS before!!!!

theraider said:
I tried this guide and it worked for me:
Click to expand...
Click to collapse
this work for gb too?

For gingerbread you can use AngryGPS I guess.

i would not recommend using such app(s)
they will not make SGS1 JVR gps any better

from what ive spotted my gps was working normaly
but after last time it landed on the ground it takes a bit longer to obtain fix and stay on it
probably will have to dissasemble my unit and check all the connections
it is not a big change but still noticable

GPSrestore Samsung APP FIXED my GPS

From day ONE my GPS has not worked. After spending endless hours on "fixes", phone resets, hacks AND 4 new phones, FINALLY it appears that a solution has been found that really works.
The GPS was taking minutes to lock before I updated to stock froyo and after updating to froyo the GPS became totally useless until yesterday when I download "GPSrestore Samsung" app from the market and ran it.
Instantantly my GPS/Maps/GPS test obtained a GPS lock within 5 seconds and im also getting a fix in my office building (near the window) within 20 seconds. No one in the office has been able to get a fix at this window location
I'm not sure what GPSrestore does, but it finally fixed a painfull bug.

dalepa said:
From day ONE my GPS has not worked. After spending endless hours on "fixes", phone resets, hacks AND 4 new phones, FINALLY it appears that a solution has been found that really works.
The GPS was taking minutes to lock before I updated to stock froyo and after updating to froyo the GPS became totally useless until yesterday when I download "GPSrestore Samsung" app from the market and ran it.
Instantantly my GPS/Maps/GPS test obtained a GPS lock within 5 seconds and im also getting a fix in my office building (near the window) within 20 seconds. No one in the office has been able to get a fix at this window location
I'm not sure what GPSrestore does, but it finally fixed a painfull bug.
Click to expand...
Click to collapse
glad it did for u, but for most of us it did absolutely nothing. My GPS to this day remains broken, and I have just accepted it knowing that I'll be owning the LG 2X in the near future and will never buy Samsung again.

dalepa said:
From day ONE my GPS has not worked. After spending endless hours on "fixes", phone resets, hacks AND 4 new phones, FINALLY it appears that a solution has been found that really works.
The GPS was taking minutes to lock before I updated to stock froyo and after updating to froyo the GPS became totally useless until yesterday when I download "GPSrestore Samsung" app from the market and ran it.
Instantantly my GPS/Maps/GPS test obtained a GPS lock within 5 seconds and im also getting a fix in my office building (near the window) within 20 seconds. No one in the office has been able to get a fix at this window location
I'm not sure what GPSrestore does, but it finally fixed a painfull bug.
Click to expand...
Click to collapse
I am not trying to piss in your wheaties but you might want to wait a couple of days and see if it holds up. Or use it on a road trip. It worked for me for a day or 2. Now I have to run that app about every day or mastersgps fix to get the sat to lock. Better than nothing I guess

I usually run the restore app every time I use navigation. It does fix it, but goes away after a couple days.
Sent from my SGH-T959 using XDA App

This just out I haven't tried it yet I will when i get home
http://forum.xda-developers.com/showthread.php?t=974702

This app does not fix my GPS.

What to do if you dont get a position fix in Samsung restore app ?

phrozenflame said:
What to do if you dont get a position fix in Samsung restore app ?
Click to expand...
Click to collapse
Do the hardware fix if you think you're up to it. The GPSRestore app only helps temporarily, it wont be long until its unreliable again.

Samsung gps restore works because it forces our phones to use standalone gps without ms assist feature to get triangulated location using network data.
This in my opinion is not a fix its a workaround and it only fixes half the problem. It helps us get a lock but the accuracy is still a major issue

So bummed, I can't get this working
My problem is that I have to run GPSRestore before every Nav. But it usually takes 4 or 5 tries. It usually happens after 10-15 minutes of driving. Its so frustrating. I am tempted to try the hardware fix but I'm a total tard when it comes to doing things with my hands. Help! Anyone out there willing to earn a few bucks if I send you my phone and have you do this for me?

Same here, gps restore only works the first couple of times & then its like you did anything to fix it.
Sent from my SGH-T959: Trigger 3.0.1, Overstock 2.4.1

Im on Bionix now but for the past year I was on stock 2.1. Never had GPS find me.
GPSTest finds 11 sat's but only locks on to 1 or 2 for a couple seconds. Google Maps shows me about half a mile from where I actually am haha.
Out of warranty, I wonder if TMO will do anything for me

Hardware Fix?
thegreatcity said:
Do the hardware fix if you think you're up to it. The GPSRestore app only helps temporarily, it wont be long until its unreliable again.
Click to expand...
Click to collapse
What's does the hardware fix entail?

The app worked fine over a few months of usage on my old Vibrant, so far I've used it only once on my replacement vibrant, to this day still locks in and I'll get ~20ft accuracy

bryant19 said:
What's does the hardware fix entail?
Click to expand...
Click to collapse
Pics and instructions. Follow them to the T and all will be well.
http://forum.xda-developers.com/showthread.php?t=878970

I can't install it on my Vibrant. I can't even find it on Google Play App.
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reddragon72 said:
glad it did for u, but for most of us it did absolutely nothing. My GPS to this day remains broken, and I have just accepted it knowing that I'll be owning the LG 2X in the near future and will never buy Samsung again.
Click to expand...
Click to collapse
Sorry to burst your bubble, but the LG 2x is the worst hardware I have owned ever. Everything is unreliable and randomly stops working, including cell reception. GPS is flaky on it as well, as is the camera - the cover of the camera causes glare, needs the back to be taken off if you want good looking photos.
I will buy Samsung every time over a LG. Yes GPS on its own is weak but with A-GPS Sammy's lock instantly.

bryant19 said:
What's does the hardware fix entail?
Click to expand...
Click to collapse
It's really easy and only takes about 20 minutes. Follow the guide that KWKSLVR posted and you'll almost have the average GPS we Vibrant owners have been pining for over the last couple years, heh.
Something to think about on top of the just bending the copper tab in case you try hardware fix... I snipped the end off of one of the ends of a coax cable I had lying around and used some tweasers to wedge it under the copper tab after it's bent up; just as a little reassurance that the tab doesn't bend too much and lose contact with the back cover's copper connectors.
I take no responsibility if you aren't gentle and break something though, heh

Taking Samsung to consumer court

Hi,
As we all know the Galaxy SL GPS is piece of crap, I have contacted Samsung support many times but their technical team does not know the difference between GPS and GPRS. They have no answer to how to fix the problem (at least Indian support team) or there is no fix. Anyways I am now highly frustrated with the GPS on the phone and with their customer support.
I have not rooted my phone, the firmware on the phone is DDKB2 (not updating it yet or rooting the phone because it will affect the warranty) latest available from Kies.
My question is to all Galaxy SL users what is the max number of satellites has your phone ever locked. (irrespective of the firmware version) For me the max was 4. It took 5 mins to reach this figure under open sky on this phone while Xperia arc and HTC wildfire were able to lock 20 satellites from the same location in seconds.
Is the GPS on phone really a piece of sh1t ? Just confirm this and I am prepared to sue Samsung in consumer court over this.
Adding to this, while traveling in a vehicle the other two phones (mentioned above) were showing realtime progress of the vehicle on the road, whereas Galaxy SL was highly inaccurate and even the wrong position shown was not updated constantly.
Edit : Please use 'Gps Test' or similar apps to check.
This is my best result so far.
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Dude go through the forum.ddkb sucks in respect to gps.all europran firmwares hav super fast gps.bt yes all indian firmware sucks when it comes to gps.
Sent from my GT-I9003 using XDA App

rdr_m said:
Dude go through the forum.ddkb sucks in respect to gps.all europran firmwares hav super fast gps.bt yes all indian firmware sucks when it comes to gps.
Sent from my GT-I9003 using XDA App
Click to expand...
Click to collapse
That's why I am curious to know that after all the proposed fixes how much improvement is there, if I install 2.3.4 the unofficial way how much will be the improvement. i have read in some threads that there is no software fix and users are hardware modding.

XXKB3 solved the problem for me. My GPS locked in seconds now.

dude take them to court ,gps on this phone really suks ,atleat after this they will send quality products to indian market

The problem is only in the software. Hardware is very good. I have XXKB3:
1. With the cold start on open air (no clouds, but under the tries and near buildings) I take signals of 3 satellites after 2-3 seconds
2. after 5 seconds It locks
3. After ~10 seconds I see about 8 satellites. (6 with good signal)
Before I had Nokia 5800. It takes several minutes to lock. And if I was driving car it takes more and more time (it would be better to stop, wait for a lock and drive then).

x86phre3x said:
XXKB3 solved the problem for me. My GPS locked in seconds now.
Click to expand...
Click to collapse
How many satellites?
For a moving source you need more satellites as the connection with every satellite is not constant, how does the device behave when in a moving vehicle?

tarey_g said:
How many satellites?
For a moving source you need more satellites as the connection with every satellite is not constant, how does the device behave when in a moving vehicle?
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Click to collapse
I was driving in the storm (very big storm, in my city it took out tries with its roots from the ground and it was very cloudy) for more then 300km. Sometimes I was driving with 140km/h. No lost locking at all. But before I used GPS Aids to take latest LTO data, and I had internet connection for all my way (to take map and so on).
It's really good device for me and it suits me well. With my native XEKB1 I was not tested GPS because I reflash my phone after 2 days of playing with it.

XXKB3 solves the GPS problems many ppl have mentioned.
I do not know how many satellites it uses/doesn't, I just know it works (and thats all that matters).

Bro, taking them to court will be a waste of your time as you know the indian courts and justice system.
My advise is, try rooting it and flash different rom which meets your gps needs.
Sent from my GT-I9000 using XDA Premium App

Filing a case in consumer court is very easy, I will go to samsung service centre this weekend for last time, if they still cant help then I will go ahead with original plan.

Try this: use FasterFix (requires root) to set the ntp server nearest to you, then use GPS Aids (requires root aswell) to download and inject the XTRA data. Once you 've done that your GPS "should" be able to see enough satellites to get a good lock.

To those who are getting v.quick fixes with the newer European firmwares and other miscellaneous fix. How does it fare when doing voice navigation?
For me , I get v.quick locks (after some hacks..6-10 satellites in view and all), but still not reliable during voice navigation, loses signal in the car. So, I believe that is a h/w issue, but then, I guess many phones will be having this issue to a certain extent.. (not able to follow you properly when travelling in a car with windows closed? .. iPhone 4 which I have played around with ,definitely does the tracking v.well)..

dude.. just check out dis thread b4 u go 2 court...
http://forum.xda-developers.com/showthread.php?t=1069416

10 fix within 10 seconds. Stock and custom roms. Maybe hardware issue?
Sent from my GT-I9000 using XDA Premium App

Correction
I'll just make a correction to my prev post... Instead of following that link in the post try these things and ya i have personally tried this settings & it worked
i havn't done any rooting or upgrading or anythin, its just the basic DDKB2. I had to reset my phone to factory settings due to a different problem. SO when i tried using the gps after reset there comes the same prob again
First thing i tried was that link, but it doesnt seem to work very well then i followed these steps...
1. Download the app "GPS AIDS V2" from android market (free version is more than enough)
2. Turn off your internet & gps & go to codes/tools in GPS AIDS
3. Select GPS Test >Application settings & make the following changes
Change Operation mode to "MS Assisted"
Change Accuracy to 100
4. Now turn on gps & internet, Go back to GPS AIDS Select GPS Status
Now it will start locking satellites
Using this method i was able to get a lock with 10 satellites in about 15-20 seconds & was getting an accuracy of 5-10 meters
And one more thing.. i am not a big fan of samsung.. Right now i am facing some other issues with this stupid device... Anyways just trying to help..

I was having the same problem as you guys, but all I did was change the ntp server to india (using gps aids) and setting mode under GPS settings to "ms-based" instead of 'standalone'...
Actually the GPS on this phone is really quite weak, I get good quick locks and signal strength but indoors it struggles under a tiled roof whereas my xperia x10 used to do it great indoors too! Oh and the applying pressure to a certain point trick actually does work! Try it out...