yashsingh1/xdaforums huggingface dataset:
[Galaxy S II Q&A, Help & Troubleshooting] tjtj4444:
As you can clearly see from the route linked above on google maps, the positions are almost all the time much better than 15-20 meter, the position is usually on the road, i e <10m actual accuracy most of the time.

People tend to believe that the reported accuracy is the actual accuracy at that moment, it is not (it is of course impossible for the GPS to know the actual error), it is an estimated upper limit, defined very differently by different manufacturers.
[Galaxy S II Q&A, Help & Troubleshooting] arabbitte:
Very interesting - I've also noticed the GPS reported speed is in multiples of 3.6 km/h in various apps. I'm on KE7.

I've resisted any temptation to mess about with OS versions and will only take what is on offer through Kies. Looks like this particular problem will be solved by an upgrade then!
[Galaxy S II Q&A, Help & Troubleshooting] bacardiandwatermelon:
20 meters, 11 sats in 11 seconds, and thats inside a high speed train. The gps is soooo much better than my n97 which would get a 70-100m accuracy. I am running cm7 though if that makes a diff.
[Galaxy S II Q&A, Help & Troubleshooting] Bynar010:
Can't believe I'm back reading another GPS issues thread, but after updating to my SGS2 from my SGS1 I'm still bitterly disappointed with the GPS performance.

Heres the kicker though...my wifes SGS2 which she got on Monday has awesome GPS performance, first time she used it (I mean the VERY first time) we were doing 70mph down the motorway, it locked in 10secs and was dead on in google maps (no circle round the arrow at all)...meanwhile I'm screaming it my phone because its nowhere near our position, huge blue circle thinking were off down all the side roads near the motorway.

I could cry...

On KH3 btw..kernel and modem. Shes on a stock O2 ROM, KE3 or KF3, can't remember which.
[Galaxy S II Q&A, Help & Troubleshooting] Elpacosv:
well, the problem that I have is that the GPS does not fix. It can see up to 8 satellites but is not fixing...actualy it takes several trials before it can fix ( 1-5 minutes).Wen it does fix the accuracy is from 120m to 30m... I have an I9100MUGKG2..I saw that going to 2.3.4 can help can some one confirm?

best regards!
[Galaxy S II Q&A, Help & Troubleshooting] Omega Frost:
After ~2 min mine locked to 6/8 sats and showed an error of 30m (using GPS Stats app), pretty disappointing...
[Galaxy S II Q&A, Help & Troubleshooting] demoguy:
After a test I got pretty much the same result. I use my GPS frequently with MyTracks to track my jogging peformance. Initial cold lock take just about 2 minutes. Accuracy never gets better than 20 meters and while running it's quite stable but will sometimes fluctuate - at one point it actually said I had traveled 12 562 kilometers. Here's a link to the google doc (gotta love that mytracks functionality): hmm ok I can't post links yet but I'll edit this post when I can

As you can tell by the map the GPS sometimes loses lock during movement. It usually regains lock within a few seconds, however.

It could be worse, it works for what I'm doing, but I'd never try to use it as a navigational tool.
[Galaxy S II Q&A, Help & Troubleshooting] Omega Frost:
I also notice this behavior, even with GPS Status it resets, clear all the satellites and re-aquire / lock in a few seconds.

But i've tested the navigation, it worked flawlessly from one city to another, i don't know if it's been assisted by compass or there's more complex coding behind.
[Galaxy S II Q&A, Help & Troubleshooting] maxip:
Fix time - 30seconds-2mins

Accuracy (stationary) - 20-50m

No of sats locked - 5 (out of 10)

Really poor GPS performance compared to my 'old' HTC Wildfire which has accuracy at the same spot of 2m

SGSII - SensatioN 1.6 ROM (GB2.3.4, Baseband I1900XXKH3, Kernel speedmod t31)
[Galaxy S II Q&A, Help & Troubleshooting] Intratech:
This is indoor. Shows the same in Google maps and it's accurate.
[Galaxy S II Q&A, Help & Troubleshooting] hserna74:
Please Intratech, could specify your version of everything

Modem

Kernel

Gps.conf

Android version

Thanks for advance

Enviado desde mi GT-I9100 usando Tapatalk
[Galaxy S II Q&A, Help & Troubleshooting] JJEgan:
Dont know if its already been covered but on SGS1 the GPS could be improved for some by pushing down on the aerial connector .The pictures from the AnandTech review have just reminded me of that tip .

http://www.anandtech.com/show/4686/samsung-galaxy-s-2-international-review-the-best-redefined/10

jje

And no i have no GPS issues on SGS 2 from firmware KD right through to current KH3 .Only part that is non stock is the GPS.conf is always replaced with a UK time server
[Galaxy S II Q&A, Help & Troubleshooting] mbernstein:
Had a big problem with GPS yesterday on the road. GPS never fixed.

Reading this thread, I've just unchecked "Use Wireless Networks" and "Use Sensor aiding" and it fixed in less than a minute with 60-85m accuracy in a building veranda.

Tried different combinations of enabling/disabling these features, got more or less the same results. It seems that if one doesn't get a fix, trying one of these combinations (I will stick to UNchecking both above) it will do the trick.

Kind of frustrating to have to "fix" GPS fix at this point in Android/Smartphone development, but...

Anyway, it seems HTC is much better at GPS than Samsung, then HTC's cameras suck, then... There are always some gains and losses, I guess. Thanks for the various helps above.
[Galaxy S II Q&A, Help & Troubleshooting] Intratech:
XXKH3

Stock XWKH4

Untouched

2.3.4
[Galaxy S II Q&A, Help & Troubleshooting] Beautyspin:
I am not sure if it will help you or not, I do not have 3G. I use GPRS. I keep the GPS on all the time. I get instant fix when I am on the map but when I try GPS test, (when indoors) i get 0 sats in view and 0 fix (which is correct) but still I get the location correct based on AGPS only. I am able to plot directions etc., also without any visibility to Sats. OTOH if i try to get a sat fix when outdoors it takes about 5 mins without the GPRS on even if the GPS is continuously on.
[Galaxy S II Q&A, Help & Troubleshooting] hostilevader:
+1 :)

I'm alredy on KG1 and even If accuracy is 50m (-.-') it's not so important in my case. I just use GPS to search things which are near my location, not to drive. I've got a TomTom for that.

Anyway I hope that the latest firmware will fix this :)

Thanks for the useful post.
[Galaxy S II Q&A, Help & Troubleshooting] BrandoHD:
The GPS has been fixed, OP issue is with the accuracy of the GPS, the thread title is a bit inaccurate and misleading and should have been changed.

Thus far, everyone has been more concerned with the accuracy being reported rather than paying attention to whether or not the GPS is reporting you in the correct location, which was the issue with the SGS or any faulty GPS unit, there have not been many instances of that reported in this thread

I did several tests while driving distances over 30km time, each trip would last between 45 and 60 minutes using MapQuest and even when I deviated from the route that MQ selected, within seconds the software would "realize I was off route," and a new route would be calculated, my position was always correct, never lost GPS lock at any point in time.

I'm from Trinidad so Google Maps Navigation does not work, but I have used it a few times while driving and GM also reports my position correctly even when the Blue circle may be fluctuating in size which was very very rare.

So to conclude, bearing in mind that the signal would be affected by your surroundings, the amount of available GPS satellites the "formulas" Samsung have employed to calculate and display accuracy may be the issue if any, therefore comparisons to other phones would be rendered moot as each phone would calculate accuracy differently, hypothetically the ultimate test would be to test the GPS using the Samsung hardware while using the the OP 3 year old HTC phone's "formula" to calculate accuracy, this may yield completely different results.

EDIT: I tested using the KH3 modem and the KG5, the KG5 performed much better in terms of lock speed and accuracy
[Galaxy S II Q&A, Help & Troubleshooting] Ragin Caucasian:
i would really like to purchase this phone. I have an iphone right now as a replacement to my former phone, the Samsung Captivate 2.3.

The Captivate was atrociously bad with GPS and I would read many XDA reviews stating how you could improve/mod the GPS feature to get it working. However, "working" meant close-to-functioning. Reviewers would detail how they could get a signal / track while on the road driving. Where the major failures of the Captivate were, was actually walking, in the city with tall buildings, maintaining a lock........Does the Galaxy S II do this? Can you track pedestrian-level routes in tall-building environments?
[Galaxy S II Q&A, Help & Troubleshooting] charles29:
I just found this thread in Google. Sorry, I did not read all 30 pages yet...

I already sent in my S2 for repair, got it back after 4 weeks, but it still performs very poor. Under best conditions (sunny weather, being outside, 360 degree free view) it calculates 10m accuracy. In the city, indide the car, during good weather, it's about 15-20m.

During bad weather (heavy clouds), it's about 50m outside and no fix at all inside the car while my HTC Desire still performs nearly as good as during good weather (2-5m accuracy).

Attached you can see a comparison between HTC Desire, Galaxy S and my Galaxy S2. The phones were placed on a wooden chair in the garden (no houses/trees) under heavy clouds (no rain) in the evening.

I dont think it is an antenna problem. "GPS Test" shows that the S2 receives at least as many satellites as the HTC Desire, some even at a higher level. On my picture, many satellites where not "in use", but during better weather, the S2 often has more satellites in use (with a similar reception level) than the Desire, but it never manages to calculate a similar accuracy as the Desire.

I've 2 questions to the community:

Do we already know if Samsung has a fix for that? Does it make sense to have it repaired (again)?

Do you think it is a firmware problem? Would it make sense to install CyanoGen?
[Galaxy S II Q&A, Help & Troubleshooting] cybercoaster:
This is all disappointing news. I was ready to buy this phone Sunday but after reading all the camera issues, bluetooth issues and now the GPS works just as good as the Captivate, I may have to wait for the Prime (as long as AT&T carries the Prime)
[Galaxy S II Q&A, Help & Troubleshooting] Beowulf_pt:
It sure has the pink spot camera issue but i have no other problems. Bluetooth is ok and the gps is excellent, at least compared to the useless one on the galaxy s 1,which i also owned.

Ive used the gps a lot now and can record pretty good tracks. Might not be a geocaching wonder but it sure is ok for car nav.

Ive also used it a lot for walking navigation in Amsterdam, with a few tall buildings, narrow roads and thick clouds with good accuracy.

Perhaps some have issues tho, the galaxy 1 sure was a gps mess, but even with that model a few units seemed to be ok.

Right now ive owned the s2 for about 3 months, as has my girlfriend - both units have proper gps.

Ive used google maps, sygic and ndrive. Plus mytracks and maps to check for accuracy. Both units on stock unrooted 2.3.3

Ps. Saying the sgs1/captivate was atrociously bad is being kind. To me i didn't even considered it to have gps. It really was a pathetic joke, poorly implemented and definitely not having proper quality assurance. Not so with the sgs2, at least not the two units living here.
[Galaxy S II Q&A, Help & Troubleshooting] arabbitte:
I can confirm that the S2 no longer is restricted to reporting GPS speed in multiples of 3.6 km/h. I'm on KF3.
[Galaxy S II Q&A, Help & Troubleshooting] lgkahn:
same problem here gets many satellites but takes minutes to get a lock or many times no locks at all..

my sgs i with same settings gets a lock in same location in under 30 secs.

not sure i should send it back to britain as it is very expensive and have the damn thing repaired.. also not happy with the crappy sound in video recordings.. keep trying the phone with each new f/w upgrade and keep going back to using the sgs i for these reasons
[Galaxy S II Q&A, Help & Troubleshooting] cybercoaster:
Just to report my use of this phone for a week now. GPS works! syncs up pretty quick and then google maps tracks me on the streets in the proper place and not random out in a field the S1 did to me. I even tried Glympse and it was accurate.
[Galaxy S II Q&A, Help & Troubleshooting] aceofclubs:
Mine is perfect for driving use.

Syncs up in a few seconds and screen shows location accurately using maps and Google navigation as well as navigon.

Couldn't be happier.
[Galaxy S II Q&A, Help & Troubleshooting] andresalonika:
My phone's gps doesnt lock if i have data connection off! I dont understand why is that! What if i travel to another country and have to use my phone's gps? What about stand alone gps units? Obviously they dont need mobile data connection to lock sattelites do they?
[Galaxy S II Q&A, Help & Troubleshooting] xBlackDroid:
im very angry with gps of my S2, never get connection...with my MotoXoom in 5 seconds i get signal

im using CM7 and when i used the stock rom it was the same bull**** =/!!!

any help ?
[Galaxy S II Q&A, Help & Troubleshooting] vip57:
No Gps lock

I hate Samsung :D
[Galaxy S II Q&A, Help & Troubleshooting] xBlackDroid:
me too :mad:
[Galaxy S II Q&A, Help & Troubleshooting] jzmtl:
I just tested mine. With data connection it's 10 seconds to lock and 20 to 5 meter accuracy. Without it's about 70 seconds to lock and 90 seconds to 5 meter accuracy.
[Galaxy S II Q&A, Help & Troubleshooting] E:V:A:
OMG! What kind of thread is this!? So much BS, not even found at New Age conventions! A bunch of whining kids? I just think I have to add to it... :D

For all you complainers out there, could you please post and check the more important data like:

Your actual country

Your exact settings:

a) WiFi: ON/OFF

b) Use wireless networks: YES/NO

c) Use sensor aiding: YES/NO

The content of the system files:

/etc/gps.conf

/etc/sirfgps.conf

Your phone's firmware details: PDA/PHONE/CSC

Then after that you can take about 6 regular readings every 10 seconds from when you first "start" the GPS on the phone. Then repeat the above after a 3-5 hours (or find a way to clear your A-GPS cache) when the satellites are enough out of position. Repeat this 2-4 more times and if you're bored you can reboot your phone in between. And of course you will be standing in the same place, with the same settings and take the same amount of time to start your GPS, every time, right!? Good. :rolleyes:

Then you don't need to bother posting your data, because they should already make you more happy! :cool:

On a side note, one may wonder how Samsung have failed to provide a proper regional /etc/gps.conf files for all our phones. My original "crappy" one look like this:

# cat /etc/gps.conf

NTP_SERVER=north-america.pool.ntp.org
XTRA_SERVER_1=http://xtra1.gpsonextra.net/xtra.bin
XTRA_SERVER_2=http://xtra2.gpsonextra.net/xtra.bin
XTRA_SERVER_3=http://xtra3.gpsonextra.net/xtra.bin
SUPL_HOST=supl.google.com
SUPL_PORT=7276

I then updated this file by doing:

$ su

# cp /mnt/sdcard/mygps.conf /etc/gps.conf

# chmod 644 /etc/gps.conf

# cat /etc/gps.conf

# replace these with your own local low latency servers here:
NTP_SERVER=lt.pool.ntp.org
NTP_SERVER=se.pool.ntp.org
NTP_SERVER=europe.pool.ntp.org
NTP_SERVER=2.europe.pool.ntp.org

XTRA_SERVER_1=http://xtra1.gpsonextra.net/xtra.bin
XTRA_SERVER_2=http://xtra2.gpsonextra.net/xtra.bin
XTRA_SERVER_3=http://xtra3.gpsonextra.net/xtra.bin

DEBUG_LEVEL = 0
INTERMEDIATE_POS=1
ACCURACY_THRES=5000

SUPL_HOST=supl.google.com
SUPL_PORT=7276
SUPL_SECURE_PORT=7275

ENABLE_WIPER=1

CURRENT_CARRIER=common
DEFAULT_AGPS_ENABLE=TRUE
DEFAULT_SSL_ENABLE=FALSE
DISABLE_AGPS_WHEN_ROAMING=TRUE
DISABLE_AGPS_WHEN_WIMAX=TRUE

DEFAULT_USER_PLANE=TRUE
REPORT_POSITION_USE_SUPL_REFLOC=1

However, I am not yet convinced that this more complicated (although) more correct configuration file improves fixing THAT much...

Hope this helps!

PS. You can find you relevant servers here: http://www.pool.ntp.org/en/
[Galaxy S II Q&A, Help & Troubleshooting] JJEgan:
Well said E:V:A

jje
[Galaxy S II Q&A, Help & Troubleshooting] Ianmanh:
I just used my SGS2 for a week now. can say my GPS is not accurate. I trying to learn it for an hour now and pin point of my current plac has changed 3 times. I don't know why? Maybe bcs i tried to use online( wifi, GPS on) and offline mode ( after using Labs-Precache map area).

Also i downloaded 10 places but i don't know how to use it offline. I can't find places, dicrection in offline mode.

My Google maps version: 6.0.3

Flatform : android: samsung -GT_I9100-GT_I9100

I am ling in Nicosia, Cyprus.

Please help me out.

Thanks
[Galaxy S II Q&A, Help & Troubleshooting] JJEgan:
Return phone to the vendor for service .

jje
[Galaxy S II Q&A, Help & Troubleshooting] vaibhavtrivedi.vt.vt:
GPS Accuracy 15 Ft

Hi,

Broken GPS - Solution Found - :):):)

My GPS is giving me an accuracy of 15Ft in max 30 secs with at least 8 satellites indoors. I did the following:

1. Wiped all using CWM Recovery

2. Installed Litening ROM 2.7 ICS

3. Used this post - http://xdaforums.com/show....php?t=1239713

4. Kept my GPS on for 30 mins outside in the balcony

That's it! ;):):D

Hopefully this will solve your problem too.

~Vaibhav
[Galaxy S II Q&A, Help & Troubleshooting] buffhr:
For me the sg2 gps is atrocious, this being my first android and Samsung device it just doesn't inspire confidence for a second 1 down the line...

The gps is usually fairly fast at locking on outside in beautiful weather, under 20 seconds to first lock, however had some rain/clouds or anything and that goes up quite fast...

Inside well im lucky if i even see 1 satelite.

Accuracy can be fairly decent to 5m but usually your looking at 10-15M, if high speeds over 40 km/hr that usually then rises to 20-40M.

Getting geotags on any picture taken with the device is even more of a nightmare, Inside pictures, never got a tag.

Outside 1 out of 5 gets a tag and even then it never receives a location, just latt and longitude coordinates.

Country: Finland

a) WiFi: ON or OFF no change

b) Use wireless networks: NO

c) Use sensor aiding: YES

PDA I9100XXLPQ

PHONE I9100XXLPQ

CSC I9100XXLPD

Baseband Version I9100XXLPQ

Kernel 3.0.15-19100XXLPQ-CL223505se.infra@SEP-94 #3

Gps.conf is original

Android version 4.0.3 (ota update)

Build number IML74K.KKLPQ
[Galaxy S II Q&A, Help & Troubleshooting] JJEgan:
Indoors cold boot no sim so no AGPS or network .

8 sats locked on within 5 mins 5m accuracy .

AGPS /Network on via

http://xdaforums.com/showthread.php?t=1447599

11 sats locked on .

Test tool GPS Status .

Your GPS.conf will be set to USA NTP time server not local see link above .

jje
[Galaxy S II Q&A, Help & Troubleshooting] buffhr:
Hi, JJEgan I followed that link of yours and well...(I cant post in that thread...)

I attempted to install the AGPS whilst using method 1,ADB push installer and selecting rom 4(google no ssl), everything seems to go fine till it says to reboot the device witch it does not.

So that leaves me perplexed, did the patch even go through or not...(no errors reported)

My GPS isnt locking any faster or more accuaretly

Pulled the battery, remains the same

Left GPS Status on for over 40 minutes, never got a lock or view of any satelites, inside a building on the top floor phone on the window ledge.1000 LUX

Method 2 I do not have root acess and well not really interested in going that route(dont want root acess for now)

Method 3 no root so no CWR/CWM

So any insight on what to try, or how to find out if it installed properly or improperly at all?

Country: Finland

Your exact settings:

a) WiFi: ON or OFF no change

b) Use wireless networks: NO

c) Use sensor aiding: YES

PDA I9100XXLPQ

PHONE I9100XXLPQ

CSC I9100XXLPD

Baseband Version I9100XXLPQ

Kernel 3.0.15-19100XXLPQ-CL223505se.infra@SEP-94 #3

Gps.conf is original/or what your ADP script installed

Android version 4.0.3 (ota update)

Build number IML74K.KKLPQ

What GPS apps you have installed? GPS test and GPS status

Are you using a case? No case

Has your GPS worked fine before? Worked yes accurate no

Does it work fine with some apps and not others? All the same pretty much

AND- Have you reviewed the Notes Section? Yes

wanted to attach pciture but cannot do to forum rules...
[Galaxy S II Q&A, Help & Troubleshooting] JJEgan:
You could join XDA developers but as you dont want to root you have no options that i can see .

jje
[Galaxy S II Q&A, Help & Troubleshooting] buffhr:
Yeah i guess for now I will just have to wait...

I will eventually root the device, once I have read enough on the subject and that I feel comfy doing so, could be awhile...

Just hate it that pretty much none of my pictures get geotaged(like 1 out of 10..)
[Galaxy S II Q&A, Help & Troubleshooting] lukesan:
Hey from another GPS addict.

Well I have the S2 since Saturday (2nd hand) and I have mixed feelings about it.

Now lets see my line of GPS devices and experiences.

- first Sony big nautical GPS receiver ... and we are talking 20th century now.

- 2001 : SIRF2 serial port receiver

- 2003 : SIRF3 usb receiver

- 2004 : Yakumo pda with GPS

- 2005 : Asus pda with SIRF3

- 2007 : Nokia E61, E61i with MTK BT GPS

- 2009 : Touchpro

- 2009 : HTC Touch

- 2010 : HTC HD2

- 2011 : HTC Desire HD en ZTE blade, and a Galaxy S for 1 week

Ok as you can see, without bragging, I have a bit of experience with GPS.

Since Saturday I have tried different roms and now I am on ICS (actually all of my tested roms have been).

My feeling is that a-gps is simply not working. With the 'a' I mean downloading and actually using the almanac.

On the Desire HD, ZTE and the now almost perfect Android on the HD2 I will get a lock in dead on 5 seconds. Now I am not talking about getting locks after you just had one ... or a couple of hours before, I am talking about getting a lock a couple of days later!

I notice you guys are talking about getting locks after a couple of minutes. Well if it is a-gps .. it can't be the case. The almanac file is like a couple of k's big so downloading and applying it should be almost instant.
[Galaxy S II Q&A, Help & Troubleshooting] lukesan:
Guys, I found something regarding the GPS.

I stumbled on this page http://www.notaboutthenumbers.com/2012/01/19/samsung-galaxy-s2-gps-problem-solved/

which points to this software

https://play.google.com/store/apps/details?id=com.fatdroid.android.gpscontrols2ad

I had to install it again after the reboot ( on ics 4.04 atm) but it shows that the filtering is off at the moment.
[Galaxy S II Q&A, Help & Troubleshooting] samnada:
Good point, and highlights the difficulty of using individual tests to make broad conclusions about GPS performance. If you use street view on his map there are many significantly tall buildings along that route which could very well have reduced the accuracy by blocking lower angle sats.
[Galaxy S II Q&A, Help & Troubleshooting] samjpullen:
Not an issue here with my GPS, locks on about 7 sats withink 10-15secs :)
[Galaxy S II Q&A, Help & Troubleshooting] RogerPodacter:
you just failed at the internets for not even reading what the discussion is about;).
[Galaxy S II Q&A, Help & Troubleshooting] samnada:
Again, the key point we're focusing on is consistent accuracy. The # of sats and time to first lock are worth noting, but for normal GPS use what matters most is maintaining high accuracy over time, as you need during a trip.
[Galaxy S II Q&A, Help & Troubleshooting] RogerPodacter:
right but other android phones GPS has a certain level of quality where the GPS accuracy works just as intended, and does not jump all over the place. just because its a great feat of engineering we are spoiled with in 2011 does not excuse an accuracy bug, when other manufacturers are not exhibiting this issue. :)