[Q] GPS: lots of sats in sight, none connected. - G2 Q&A, Help & Troubleshooting

I've played Ingress for several months. One thing I do daily is recharging 20~30 portals during my commute by bus -- open Ingress after getting on a bus, waiting for the GPS to get fix, and collect XMs and recharge.
However, in the recent one or two months, my phone's not able to get me GPS fix near my home -- even on a square. GPS status shows many sats in yellow, but none becomes green. Rebooting the phone doesn't solve it.
When I get to another place, two or three kms from my home, my phone still can't get fix. What's strange is, if I reboot my phone there, and try GPS again, it usually gets instant fix.
Also, I can always get instant fix anywhere near my working place.
I have two questions:
1. Which of the software parts affects GPS performance? I switched among multiple ROMs during these months, but I should be always on cloudyfa's KK baseband.
2. Anyone else has encountered the situation that you stand on a square on a not-so-cloudy day, with no high building around, 24 sats in sight, but your phone just can't connect to any? Has anyone solved it? How?

Try using faster fix app and change the ntp to your location and see if that helps

danial.aw said:
Try using faster fix app and change the ntp to your location and see if that helps
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Click to collapse
Thanks. That didn't make any difference.

coolcfan said:
Thanks. That didn't make any difference.
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Click to collapse
Download GPS Test from the Play Store, go to the app settings and press Update A-GPS while your data connection is on. Wait a few moments and the app should lock on to GPS satellites. You should be good to go from there.

robogo1982 said:
Download GPS Test from the Play Store, go to the app settings and press Update A-GPS while your data connection is on. Wait a few moments and the app should lock on to GPS satellites. You should be good to go from there.
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Click to collapse
GPS Status from play store also has that A-GPS downloading feature, and that's not helping me either.

If not changed nothing in software that can cause bad reception (build prop edit, rom, ...) try something hardware
RĂ©parer en 5 minutes le GPS LG g2: http://youtu.be/UdDJqFxpRy8

siggey said:
If not changed nothing in software that can cause bad reception (build prop edit, rom, ...) try something hardware
RĂ©parer en 5 minutes le GPS LG g2: http://youtu.be/UdDJqFxpRy8
Click to expand...
Click to collapse
Thank you! Good video. I will try it after having tried all software ways.
Which properties in build.prop affects GPS performance? I'd like to check them first.

Also, try TopNTP app before opening up the phone.

I've been through a few smartphones and running various ROMs on each, here's my observation.
a. If the phone's gps takes long time but eventually locked then those apps mentioned above do help.
b. If the phone's gps take long time and never locked then those apps above are useless, they won't do a thing.
My advice 1: restart the phone and see the gps gets locked reasonable fast, if not
My advice 2: changing ROM. Do focus on firmware first before touching hardware.
Long time means 15' or more.

Related

I might be on to something for the GPS issue.

Well like everyone I had the GPS issue and it was frustrating. I do run an app killer and I always notice many apps (especially the preloaded ones) Keep launching themselves. It got rather irritating. Specifically Telenav.
I noticed with Telenav my GPS would be very flaky. Once I got "killed" it the gps seemed to improve. I thought to myself maybe I'm just being paranoid.
Did a bit of research and found an app called "Start UP Auditor" which completely kills an app and restricts it from every starting up again. My gps seems to be working much better now.
I drove a few miles and on the Verrazano Bridge here in NY and the GPS was super percise. When I was at the end of the block it was at the end of the block as well at the same time. Not like it was before.
Now I can launch google maps and it will find me exactly in front of my house and not 200 feet away.
Takes a solid minute to lock on. Not more but not less unfortunately. So there still is a bit of a problem but for me at least it has exponentially gotten better. Versus it not even locking on previously.
I think I might be on to something. I cannot give all credit to me because I saw on a Tmobile forum someone say that they think the problem might be with the self launching apps so that's where I started to draw conclusions.
EDIT: Scratch that one min thing. It seriously just now took me 10 seconds to lock on and the GPS to start talking to tell me where to turn inside my house. Issue fixed?
I completly removed TeleNav and I still have GPS issues... It is not any software causing this problem. It is a Hardware / Firmware / Driver issue.
Sent from my SGH-T959 using XDA App
gravis86 said:
I completly removed TeleNav and I still have GPS issues... It is not any software causing this problem. It is a Hardware / Firmware / Driver issue.
Sent from my SGH-T959 using XDA App
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Click to collapse
Same here, one of the first things I did after rooting was remove all the bloatware, and Telenav was one of them.
gravis86 said:
I completly removed TeleNav and I still have GPS issues... It is not any software causing this problem. It is a Hardware / Firmware / Driver issue.
Sent from my SGH-T959 using XDA App
Click to expand...
Click to collapse
Hmmm... Interesting.
My GPS issues seem to have disappeared after killing Telenav.
This just takes me back to the drawing board once more. I just do not understand...
I would like to see others responses. Does there happen to be vibrants with different firmwares?
So what happened to me?
Was it some magical stroke of luck?
Wow.
Initially, disabling TeleNav gave me a significant improvement in GPS performance. Indoors, I went from having 50-60ft. of accuracy (with multiple locks), to 12-15ft. of accuracy with a single lock. Initial accuracy was in the upper 40s, but quickly dropped to the highest accuracy I've seen with the device (the 12-15ft. figure) - indoor or outdoor - within a minute. Crazy.
Outdoor, on a perfectly clear sky, the best I've achieved was previously 25ft. of accuracy.
I rebooted (the phone froze, wheee!), with TeleNav still selected as disabled, and now, I'm only getting 30-52ft. of accuracy with a single lock. This took about two minutes to come down from 170ft. or so.
GPS settings have been switched to 'Automatic', from the stock supl server, for all of these tests.
Maps still shows me in Issaquah, initially (incorrect data), but quickly updates my position my exact location (within a few seconds). Previously, Maps would take at least a half hour to place me in even the correct city! Margin of Error: ~50ft. or so (shows me on the street, rather than on my property), within seconds.
Compass, as expected: still totally ****ing broken and ****ty.
I can confirm that - besides not being able to lock onto more than a single sat - I'm seeing drastic improvements. Thanks for pointing this out.
Still, I'm not sure the improvement will be enough to convince me to hang onto the device while we wait to hear from Samsung. :/
Jon C said:
Wow.
Initially, disabling TeleNav gave me a significant improvement in GPS performance. Indoors, I went from having 50-60ft. of accuracy (with multiple locks), to 12-15ft. of accuracy with a single lock. Initial accuracy was in the upper 40s, but quickly dropped to the highest accuracy I've seen with the device (the 12-15ft. figure) - indoor or outdoor - within a minute. Crazy.
Outdoor, on a perfectly clear sky, the best I've achieved was previously 25ft. of accuracy.
I rebooted (the phone froze, wheee!), with TeleNav still selected as disabled, and now, I'm only getting 30-52ft. of accuracy with a single lock. This took about two minutes to come down from 170ft. or so.
GPS settings have been switched to 'Automatic', from the stock supl server, for all of these tests.
Maps still shows me in Issaquah, initially (incorrect data), but quickly updates my position my exact location (within a few seconds). Previously, Maps would take at least a half hour to place me in even the correct city! Margin of Error: ~50ft. or so (shows me on the street, rather than on my property), within seconds.
Compass, as expected: still totally ****ing broken and ****ty.
I can confirm that - besides not being able to lock onto more than a single sat - I'm seeing drastic improvements. Thanks for pointing this out.
Still, I'm not sure the improvement will be enough to convince me to hang onto the device while we wait to hear from Samsung. :/
Click to expand...
Click to collapse
Yea like I said in the OP the fix is better but there definitely is a problem that needs to be addressed. That might be either hardware or firmware, All thats left is to wait for sammy to fix it up. However my GPS performance for my needs is more than exceptional.
I have noticed that while running GPStest, Google Maps starts to work. Something is wrong with the API.
If anyone is getting black screen freeze ups, disabling GPS will clear that right up.
And, we're back to square one. So much for that.
Location services can no longer locate me, and show that I'm in a neighboring city. Nothing I adjust fixes this for more than a short period of time.
Oh, Samsung...
dattaway said:
I have noticed that while running GPStest, Google Maps starts to work. Something is wrong with the API.
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Click to collapse
It seems to me that it is definitely a software problem. I don't think the hardware is bad. (The gps chip?)
heygrl said:
If anyone is getting black screen freeze ups, disabling GPS will clear that right up.
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Click to collapse
I drove for miles and had nothing. Though if I am not using GPS I always turn it off to conserve battery.
Jon C said:
And, we're back to square one. So much for that.
Location services can no longer locate me, and show that I'm in a neighboring city. Nothing I adjust fixes this for more than a short period of time.
Oh, Samsung...
Click to expand...
Click to collapse
I wonder if they can't even find the issue yet. It will probably be fix in the 2.2 update.
I removed TelNav within 4days of owning my phone and it really for me hasn't changed a thing.
What helped me was turning off the wireless location feature. From what I noticed it looks for your location based off the cell towers first then it looks for your location via GPS. If its slow to find you via wireless then well its slow to find you via GPS too.
I didn't really tried the GPS when I saw the threads saying there was a problem with it and I read somewhere about "how to fix it" so I applied the fix before even using the GPS before, so I have no clue if I had problems or not, but after the fix, the GPS locks in about 10 to 15 seconds and gest my location on the spot, even indoors.
just change the GPS settings to google servers
Directly after rebooting my gps/navigation seems to work much better.
To make it more clear... I'll be using my phone throughout the day and then i'll try to use navigation. Usually it will just keep trying to find the route but it never actually finds it. I'll reboot the phone and it'll find my location and the route in <10 seconds.
kizer said:
I removed TelNav within 4days of owning my phone and it really for me hasn't changed a thing.
What helped me was turning off the wireless location feature. From what I noticed it looks for your location based off the cell towers first then it looks for your location via GPS. If its slow to find you via wireless then well its slow to find you via GPS too.
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Click to collapse
I believe the wifi and GPS share the same antenna. Anyone know which antennas do what for sure?
Our cellular antenna is at the bottom under the bump. The one at the top next to the antenna port does the rest.
heygrl said:
If anyone is getting black screen freeze ups, disabling GPS will clear that right up.
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Click to collapse
Thanks for this tip, I hadn't caught this in the other GPS threads.
I ran and used My Tracks but forgot to turn on GPS. When I tried nav it could not get a fix until I restarted. Next time I'll try killing conflicting apps.
Sent from my SGH-T959 using XDA App
I just deleted the Tel-Nav app and now my GPS locks on in about 10 seconds and is dead on accurate. I even drove 165 miles today and never dropped a GPS signal. I could never do that before.
Does anyone know why the times are off one the gps sensors? My local time is 10:51, but gps test has it as 18:51 that is about 8 hours off.
Sent from my SGH-T959 using XDA App

gps fixed without hardware changing. located in 10s

make sure your wifi/apn work well.
it works great on NERO V3 and V4.1
method:
dial *#3214789650# into lbs
first choose:app setting
1:Sessing Type
(Tracking)
2:test mode
(H/W Test)
3p mode
(H/W Sensitivity Test)
4:start mode
(Cold start)
5:GPS Plus
(ON)
6:
(ON)
7:
(50)
8:
(OFF)
second choose supl/cp setting
1: FQDN type
(Custom Config)
2:
supl.nokia.com
3ort
7275
4:SUPL security
ON
5:AGPS mode
(SUPL)
then back to home and reboot your device.
after it, get into lbs again
1.choose delete gps data
2.get position test
3.after located, change 1st "cold start" into "hot start".
completed.
get more detail from
bbs.gfan.com/android-503202-1-1.html
I had 3 and now running 4.1. GPS picked up within 3 - 4 seconds with v3. With 4.1 my GPS picked up in 2 seconds. I did not have to modify any files.
Sent from my SGH-T959 using XDA App
Here's the best fix:
1.) Install Nero 4.1
2.) Leave it alone.
The end.
If that doesnt work:
1.) Install Nero 4.1
2.) Do the hardware fix
3.) Leave it alone.
The end.
my solution: get a new phone once a suitable 4" replacement comes out on t-mobile.
it works!
this by far is the best solution!
I get 10m accuracy now whereas i used to get 1200m before...
Let me try it a bit more, but it seems it works!
Sent from my SGH-T959 using XDA App
HOLY ****?
i got 10 satellites in 5 seconds, then they all started connecting and now my accuracy is 12 meters???
I think your all connected to wifi, maybe thats why your getting good locks. Disable it and try again.
Sent from my SGH-T959 using Tapatalk
I was out walking my dog this morning (no wifi) and while yes I was in a clearing, I turned on GPS Status for the first time since installing the new rom so it came up with the default html page explaining GPS Status, but I read it before so I closed it immediately and was already locked onto 8/11 birds. 2 seconds maybe. 7m accuracy.
On the flip side when I first got my phone I tried to use it as a GPS to navigate and drove around for 30 minutes without ever locking onto a single bird.
I understand and do believe there is a hardware problem with many Vibrants however I also believe that there has been a HUGE software problem as well.
iwillkillyou said:
I think your all connected to wifi, maybe thats why your getting good locks. Disable it and try again.
Sent from my SGH-T959 using Tapatalk
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I've been using OP's "fix" for 3 days and so far it's working very well. I typically get locks in 10s or less, and accuracy 15-30 ft, inside. I nearly always disable wi-fi when I test GPS, but I've tried it both ways with this setup and it's working virtually the same either way.
At this point my only reservation is I've seen so many similar suggestions to tweak some setting that don't really pan out over time. This one may do the same, but so far so good.
I have done nothing but installed axura rom.ine locks in couple of seconds and works flawllesly. Even the accuracy is fantastic.
My gps went from bad to worst, 600 metter accuracy, maybe its the rom, ill try teamwhiskey. i been crying for a working gps lately.
Sent from my SGH-T959 using Tapatalk
I do see a improvement will check it out for a few days to see if it holds
Not perfect but now I actually can get a GPS signal, which is a plus
adiprince1 said:
I have done nothing but installed axura rom.ine locks in couple of seconds and works flawllesly. Even the accuracy is fantastic.
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Click to collapse
I had applied both the hardware and software fixes while using many versions of Nero and my GPS would never get quick locks, usually it wouldn't lock at all.
Flashing Axura fixed my GPS too. Locks within seconds and has 7-9 meter accuracy.
Axura also fixed my fiance's GPS (with no hardware fix). She had the same issues with every other rom, slow/no locks. So I know it wasn't only my device.
I don't know what method Devs4Android used to fix the GPS, but it works perfectly. They need to sell the fix to Samsung so customers can get functioning GPS out of the box.
never had a problem with the gps locking on to sats and getting 20-40 foot accuracy. the problem is the drifting and staying locked once you start moving or just standing there. that is the problem i have. driving down the highway and bam your on the other side going the wrong way, or in the middle of the field a mile away. that is problem i have
fioricet said:
never had a problem with the gps locking on to sats and getting 20-40 foot accuracy. the problem is the drifting and staying locked once you start moving or just standing there. that is the problem i have. driving down the highway and bam your on the other side going the wrong way, or in the middle of the field a mile away. that is problem i have
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Click to collapse
Thankfully, Axura fixed that for me as well. Not only does it lock fast, but its accurate too.
After 2 days.
Last 2 days, I've tested my GPS in some different scenarios. In every one it has been quick and accurate enough.
I got 8 satellites in average, and the accuracy was of around 7-8 meters, something that has never happened before. I did the hardware fix, and it helped with the SNR values, but this is the definite best solution yet!
I'm still testing, but I've got a very good feeling about this method.
The only difference I see between this "fix" and other "fixes" is changing the SUPL server to supl.nokia.com. Since the original thread came from a Chinese forum, I'm guessing the SUPL server might work well in China. Not sure how effective this would be in the US or other countries.
That said, this isn't really a fix. All it does is change the SUPL server, which for most of us (using supl.google.com) works just fine. The Cold Start -> Delete GPS Data -> Lock -> Hot Start method will work just once because it clears bad cached GPS data if you've moved, but it's old news (dozens of other threads on this one) and it's not really a "fix."
The hardware fix is still one of the few real fixes out there.
jamesyl said:
The only difference I see between this "fix" and other "fixes" is changing the SUPL server to supl.nokia.com. Since the original thread came from a Chinese forum, I'm guessing the SUPL server might work well in China. Not sure how effective this would be in the US or other countries.
That said, this isn't really a fix. All it does is change the SUPL server, which for most of us (using supl.google.com) works just fine. The Cold Start -> Delete GPS Data -> Lock -> Hot Start method will work just once because it clears bad cached GPS data if you've moved, but it's old news (dozens of other threads on this one) and it's not really a "fix."
The hardware fix is still one of the few real fixes out there.
Click to expand...
Click to collapse
So I take it you haven't tried this. I agree with what you say, however, I've been using OP's suggested settings for 4 days and see a significant improvement in lock times (only exception is I leave it set to Coldstart). I've been turning my phone off at night and after booting yesterday morning it locked in 14s first time, this morning in 7s. I know lock times can vary depending on where the sats happen to be at that moment, but this performance is much better than I was getting previously, which was in the 1-4 min range on first lock of the day. It's so simple to try there's no real reason not to see if it helps, unless you're already getting lock times like this. Only time will tell if it lasts, but so far so good.
(Running pure stock JI6, and I've also done the HW fix posted in the sticky, which definitely improved my SNRs.)

GPS UK

right I have to know if its only me but even after editing the gps config file it still only works every now and then and even that requires gps status and tools? At the moment using WP7 and gps is lightning fast (fix etc) but switching back to android as android is most definatly superior in most cases at the moment. Especially the camera quality is bad and battery life is ok but better on android
Is there a rom with a WORKING gps not one that works under supervision? as I like to use the gps apps like maps and copilot etc
OK well just changed a couple things and now gps is working
I dont know whether Radio revision affects it but downgraded it to 2.12 from 2.15 and left my gps location as europe after clean flash and now getting a gps fix under 10 secs mass improvement to before (2 mins to never)
might try with UK ntp.pool settings, and see the results
Edit as you like, but < 10 seconds is about as good as it gets, don't fixit if it ain't broke!
well tried it anyways and it is even better >5 seconds is this a radio related. If so gotta write down this radio version for future reference
You get quicker fixes when you've already recently had one, I don't think a <5 seconds cold fix is possible.
willzrocking said:
OK well just changed a couple things and now gps is working
I dont know whether Radio revision affects it but downgraded it to 2.12 from 2.15 and left my gps location as europe after clean flash and now getting a gps fix under 10 secs mass improvement to before (2 mins to never)
might try with UK ntp.pool settings, and see the results
Click to expand...
Click to collapse
This is intresting.
Is it possible to keep us updated in a couple of days to check if the quick fix is consistant with radio 2.12 ?
I think it would interest alot of people.
My phone was also with 2.15 previously, as willzrocking i experienced mixed result with this radio and long time locks in any case.
This morning i was encouraged by this post and gave 2.12 a try, unfortunately for me it seems tobe no go, it seems worst than 2.15 on my phone.
In the same road to my office (10 minutes by car) 2.15 was able to lock 1 or 2 minutes before i reached destination (not really usefull...), 2.12 was not able to catch the signal.
I'm going to try have a lock in a plain surface later on today and will let you know the results.
Cheers.
Still working good for me... I am using the Cleandroid Rom but even though the gps is now very good the network keeps dropping alot and sometimes randomly the H signal disappears and replaced with G sometimes until I switch between flight mode so think I am gonna have to sacrafice the GPS until I find a better radio/rom
I've just put on 2.12 here in the UK and don't notice any real difference at all
EDIT: ooh think i've now solved it for me!
I also have an Orange San francisco ( ZTE BLADE) and that always locks on GPS very quickly...
so i had a delve into the blade's gps conf and i notice a few parts were commented out that arent for my HD2.
the parts i just added/commented out are.
I added
INTERMEDIATE_POS=0
and commented out the following to look like this
#SUPL_HOST=supl.google.com
#SUPL_PORT=7276
Now after locking/unlocking the phone and rebooting i get a lock onto GPS in under 10 seconds every time, whereas before it was very hit or miss!
Out of curiosity, those who have problems, how many have the app GPS STATUS installed? i'm wondering if it is causing a problem too.
this thing is driving me crazy... as the gps is!
2.12 was worst than 2.15, then i tried 2.08, same as 2.12. So i did a roll-back to 2.15 and tried to put crunchie's settings into my gps conf.
Didn't notice any difference so i tried to remove gps status.
After reboot i made the following test:
launching google navigator 3 times, every time i placed the phone in the same position where i was sure to get good signals.
Between each tentative i removed the phone from its position, closed navigator, turned off and then on the gps, replaced the phone back.
It took 20 secs to do this operation.
I got a fix each time, which is good, but look at locktimes...
1) around 90" (good)
2) around 3 minutes...
3) around 4 minutes...
It seems like it doesn't save gps data previously scanned, every time it's like a cold start...
I really don't know if there is any way to fix this at the moment but i would really like to know which is the difference between my phone and yours. Maybe 'cause mine is brand new? (i received it the 4th of jan)
Very important for me too. So my parts:
RADIO: 2.15.50.14
ROM: MDJ's CyanogenMod 7 v. 2.6
COUNTRY: Latvia (EUROPE)
Actually this is the only Android build where I got any week GPS signal. Previously - nothing.
Well, on WM 6.5 GPS works extremely good and stable with the same radio.
I am using GPS Status (to download some A-GPS data, which really does not helps).
I live in Latvia, but my gps.conf was set to europe.pool.ntp.org. I was able to get some week connection today with a fix in approx. 10 minutes. When I changed my gps.conf to my country: lv.pool.ntp.org GPS stopped working. Will try now to revert back.
P.S. My friend with Desire HD also living in Latvia has north-america.pool.ntp.org, but still gets fix in about 30 sec. And changing gps.conf and downloading A-GPS data does not help at all.
NTP_SERVER=lv.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
Click to expand...
Click to collapse
crunchie-uk said:
the parts i just added/commented out are.
I added
INTERMEDIATE_POS=0
and commented out the following to look like this
#SUPL_HOST=supl.google.com
#SUPL_PORT=7276
Now after locking/unlocking the phone and rebooting i get a lock onto GPS in under 10 seconds every time, whereas before it was very hit or miss!
Click to expand...
Click to collapse
That sounds promising, so I've edited my gps.conf to match and I'll get back and let you know how I get on with it.
Incidentally, I used Navigator today for the first time in ages and didn't expect it to work as I flashed a new ROM over the weekend, but it worked a treat. I'm in the UK but it was set to use a North American NTP server, so I'm surprised it worked!
Glad it did though
johncmolyneux, so that worked for you?
Can you please post in QUOTE your full gps.conf text?
Synoptex said:
johncmolyneux, so that worked for you?
Can you please post in QUOTE your full gps.conf text?
Click to expand...
Click to collapse
johncmolyneux said:
I've edited my gps.conf to match and I'll get back and let you know how I get on with it.
Click to expand...
Click to collapse
I'll let you know mate.
Ok, I tried all that in different ways rebooting each time.
Only one time I had cold start and fix in 10 sec was: (changes bolded)
NTP_SERVER=xtra1.gpsonextra.net
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
INTERMEDIATE_POS=0
#SUPL_HOST=supl.google.com
#SUPL_PORT=7276
Click to expand...
Click to collapse
This 10 sec. story was only once. Now I again can't accure sattelites. Will try to launch with gps.conf file fully empty. Will see, what it does.
Mine seems pretty stable now, but gps status seems to screw it up so for those still trying I'd advise you don't open gps status at all and/or force close it
crunchie-uk said:
Mine seems pretty stable now, but gps status seems to screw it up so for those still trying I'd advise you don't open gps status at all and/or force close it
Click to expand...
Click to collapse
I'll bear that in mind - thanks. I don't tend to use any extra apps anyway. We all know from WM days that the GPS in our phones is pretty good without it.
I'll try it tomorrow, when I drive a mile down the road to my local shop. And yes, I do know the way
crunchie-uk said:
Mine seems pretty stable now, but gps status seems to screw it up so for those still trying I'd advise you don't open gps status at all and/or force close it
Click to expand...
Click to collapse
Do you mean program GPS Status? Well, I'm using it to find a sattelites and then quickly switching to Google Maps. )))
Why do you think it can mess up the GPS reception? I'll try not to use that. Thank's.
Synoptex said:
Do you mean program GPS Status? Well, I'm using it to find a sattelites and then quickly switching to Google Maps. )))
Why do you think it can mess up the GPS reception? I'll try not to use that. Thank's.
Click to expand...
Click to collapse
When I open it to see what satellites are connected then go back to maps, maps is no longer as accurate even though gps status says it's locked.
It looks like it makes maps revert back to wifi or gsm triangulation.
Then if I go back to gps status, force close it then reopen it, gps status is no longer able to lock on nor Is maps.
So, I open maps, leave it for upto 20 seconds (usually under 10) it locks on to 2M accuracy
If I then open GPS Status, it says no satellites.
Exit back to maps and I'm no longer locked on and it doesn't seem to lock on again (cold start maybe.)
Then , force close gps status
Force close maps.
Reopen maps and I'm locked on again after a 'cold start' and then maps behaves itself again with under 5-10 second locks even after reboots and gps off/on
crunchie-uk said:
When I open it to see what satellites are connected then go back to maps, maps is no longer as accurate even though gps status says it's locked.
It looks like it makes maps revert back to wifi or gsm triangulation.
Then if I go back to gps status, force close it then reopen it, gps status is no longer able to lock on nor Is maps.
Click to expand...
Click to collapse
Oh, well, thank's. I experienced it today on a road, that after GPS Status, my Google Maps were jumping from GPS sattelites to Mobile Network Stations.
One more wish from you. Can you please post your gps.conf in a QUOTE here? I tried now this:
SUPL_HOST=lbs.geo.t-mobile.com
SUPL_PORT=7275
NTP_SERVER=xtra1.gpsonextra.net
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
Click to expand...
Click to collapse
Actually not having anything with t-mobile, but I still managed to connect... after a while, after a long while....

[Q] My Nexus 7 can't get a GPS fix at all

Hi,
I've recently aquired a Google Nexus 7. One of its great uses, I believed, would be as a driving aid, w/ cached Google Maps or with an alternative driving/location app, such as CoPilot. But, after testing it for two days I see that the device can't get hold of a GPS signal at all.
What the problem seems to be:
- The device is stuck at "searching for GPS". It never actually gets a response; no GPS at all.
What I've tried so far:
- Resetting the device to factory settings -- since it's brand new and I only had a couple of apps installed, I thought that a fresh start would be a good idea just in case.
- Moving to various locations and checking whether it was a location problem. I've tried both "on the go" -i.e. in a car- and static. No GPS at all cases.
- Downloaded GPS Status. It's always at "Looking for GPS location". My longest record so far is 10 minutes of it -- still, no GPS.
- Checked with a couple of other apps just to see if I'd find more information related to the problem, none helped. It seems that if a GPS fix isn't found, they can't offer much help.
- Disabling Google's Location Services and disabling Wi-Fi access, in case it messes up with the GPS receiver. No luck.
- Rebooting the device. Nope, doesn't do anything.
- Using GPS Doctor's -a paid-for app- auto-fix and manual fix features. Tried aquiring a GPS signal for 10+ minutes, nothing happens.
- Leaving the device for more than 30 minutes under clear sky and more than an hour next to the window, trying to find a signal. Nada. No workie.
- Dancing naked under the stars next to twelve lit black candles. No luck, but it felt great.
Things to note:
- It's running Android 4.2.1
- I'm in Greece ATM, maybe this is a country thing? I'd bet against this, just pointing it out.
- AFAIK, the device hasn't aquired a GPS signal at all so far.
- The device is brand new, never operated before I opened the box.
- It has not been rooted, messed with etc. etc. at all.
Any ideas welcome. Thanks in advance for your help!
The reviews of GPS Doctor indicate that it MIGHT solve your problem. It's a paid for app at https://play.google.com/store/apps/details?id=com.epekware.gpsdoctor&hl=en
peterk-1 said:
The reviews of GPS Doctor indicate that it MIGHT solve your problem. It's a paid for app
Click to expand...
Click to collapse
Thanks for the reply. Since it was only 1,5 euros I gave it a try -- no luck. After using both auto-fix and the manual fixes and searching for a GPS fix for 10+ minutes, it doesn't seem to work.
Sorry I've just re-read your initial post and saw you had tried GPS Doctor.
You've tried it outside. Is there any indication that signals are being received - satellite number and a bar graph that changes colour when a satellite has been "resolved". Is this a Greek model? - If it was for a different market then it may be that it is trying to resolve the satellites to give a location in the intended market (once a location has been fixed the GPS will quickly get a fix when powered up again within say 100km using the data it stores, the almanac etc you can clear in GPS Doctor). Before returning the unit I'd give it a try by leaving it with a view of the sky for at least 30mins
peterk-1 said:
Sorry I've just re-read your initial post and saw you had tried GPS Doctor.
Click to expand...
Click to collapse
It's actually not your fault -- I've added GPS Doctor to my initial post *after* you've suggested it & I've tried it, for bookkeeping and so that other who try to help see at one place what I've tried doing so far.
peterk-1 said:
You've tried it outside. Is there any indication that signals are being received - satellite number and a bar graph that changes colour when a satellite has been "resolved". Is this a Greek model? - If it was for a different market then it may be that it is trying to resolve the satellites to give a location in the intended market (once a location has been fixed the GPS will quickly get a fix when powered up again within say 100km using the data it stores, the almanac etc you can clear in GPS Doctor). Before returning the unit I'd give it a try by leaving it with a view of the sky for at least 30mins
Click to expand...
Click to collapse
Yep, I've tried it outside. It's a Brittish model, not a Greek one, but I'm trying to use it in Greece ATM. There's no indication whatsoever that it has resolved a connection to a satellite when I'm trying, so I guess it'd be reasonable to say that it hasn't reached one so far.
I'll try your suggestion. 30 minutes of straight satellite-searching it is -- thanks again!
*Update*: 30 mins doesn't seem to do the trick. I'll keep trying, then, until a better suggestion comes up.
There is an app called GPS Test or GPS Test Plus which will show the strength of each satellite signal received. My Nexus 7 often gets a lock inside a wood frame house but going outside with a clear view of the full sky works fastest. Hope you are not using a conductive case as the antennas are on the rear of the tablet.
jinx100 said:
There is an app called GPS Test or GPS Test Plus which will show the strength of each satellite signal received. My Nexus 7 often gets a lock inside a wood frame house but going outside with a clear view of the full sky works fastest. Hope you are not using a conductive case as the antennas are on the rear of the tablet.
Click to expand...
Click to collapse
Hi, thanks for the suggestion. I've tried GPS Test -it's under the "couple of other apps" that I've mentioned trying in my OP- but it seems that my Nexus 7 doesn't even get a satellite signal to begin with -- thus GPS Test displays no information.
I'm not using a case and I've tried leaving it for about 30 minutes under the clear sky. No signal at all. I have it by the window, ATM, just searching & on charge.
Okay, after quite some time out in the open sky and next to the window, I'm quite sure it's not about finding the time to contact satellites or anything of the such. The device simply cannot find my location.
Any new ideas?
Send it back if possible,sounds like a faulty GPS.
There are location setting hidden in accounts,see if they are on.
Sent from my A100 using xda app-developers app
My problem with the GPS is that it will SEE the satellites (according to several GPS test apps), it just won't lock on to any - no matter how strong the signal or whether or not I'm indoors or out.
Kodiack99 said:
There are location setting hidden in accounts,see if they are on.
Click to expand...
Click to collapse
Hi, thanks for the reply -- do you mind sharing more info on this one?
Try faster fix, its free but requires root.
Sent from my GT-I9100
alferret said:
Try faster fix, its free but requires root.
Click to expand...
Click to collapse
I'm not sure of what you mean by that, could you please elaborate? Thanks!
Sino316 said:
Hi, thanks for the suggestion. I've tried GPS Test -it's under the "couple of other apps" that I've mentioned trying in my OP- but it seems that my Nexus 7 doesn't even get a satellite signal to begin with -- thus GPS Test displays no information.
I'm not using a case and I've tried leaving it for about 30 minutes under the clear sky. No signal at all. I have it by the window, ATM, just searching & on charge.
Click to expand...
Click to collapse
If Settings - Location access - location access ON and GPS checked yet you still receive no satellites then your GPS function is defective. Return it to the seller.
Same GPS issue with N7
Hi OP, did you get any solution for your problem?
I am facing a similar issue, I am trying to use GPS on a US bought N7 in India.
Is this a common problem, i have tried many gps apps, but none shows my location.
If your N7 is new and GPS never worked properly and your various location settings are correct, you might want to return & exchange it for a different unit as it could be a hardware problem, beyond any software or Apps-based solutions here. If you are using a weather app, does it find & use your location info?
I had a similar issues with GPS and eventually returned that malfunctioned unit locally to exchange it, upgraded from 16GB to 32GB unit as it was also having the random touch-screen key-pressed issues, etc. It either won't find the location and/or is off by a few miles to as much as a thousand plus miles, sometimes putting the N7 in the middle of the ocean, LOL. The new 32GB unit is flawless.
What I recommend is to try to download from Google "Play Store" - GPS Status by MobiWIA (v 4.0.1 is what I'm running on mine - has been using this for 2 years on multiple devices and it worked for us here - USA) Basically, it download & update, refresh and give assisted hand to the built-in GPS receiver - it run in the background and will turn on to track/lock on to various GPS satellites, inititially showing 5 to 7 sources indoor and at many as 8 to 12 sources within 60 seconds. Outdoor and clear view of open sky, it will lock faser & find more satellites. It is ad-supported and free, not a metered trial-ware
With a WiFi signal, Google Maps open quickly and zoomed it quickly to my locations in 15 seconds - very accurate and as good as when I'm using it on our HTC devices - same is true when I use Nav(free) USA - free off-line GPS software with preloaded maps as it does not drain the battery quickly.
I like the giant 7" screen for "cool" naviagation but until I'm comfortable with a solid & secure mount inside our Honda CRV, I'll stick with the smaller 4" screen of our HTC smartphone with unlimited 3G data access, as a drop will risk breaking the fragile glass lens that's prone to cracking.
similar issue but...
Had already tried Faster Fix (which gave error) and Faster GPS (which managed to reset GPS.conf) but still couldn't get Google Maps to lock in GPS. Was wondering if problem was GMaps or N7.
I googled 'nexus 7 can't get GPS lock' and ended up here. Decided to try GPS Status which showed everything working as it should ('copy location to clipboard' option lets you verify the location via browser). Went back to GMaps hoping GPS Status might help it along, but still got the same 'your location is temporarily unavailable.'
So not hardware must be software. Didn't have to look far checked 'other apps' in the GPS Status program and discovered Orux Maps, free. Upon starting and clicking GPS button didn't take it more than a few seconds to get the lock.
OP issue might still be hardware but thought I'd post here in case someone else ends up here.
i know its an old post but i am facing the same issues here! at the beggining i thought i have got a faulty device. Thats why i bought a used one and tested it before purchase live. The GPS was working just fine. I installed Cyanogen 13 opened GPS Status again and found Satelite. I thought everything was working like it should be. After 10 Min. i went to the car and drove to a friend without any issues. After 3 hours i went home again without any problems. But as the tablet restarted i never got a satelite signal again... always looking for my position.
I am pretty sure thats a software issue. Went back to stock firmware. Problem remains.

gps not good at all

I hate to start a new thread, but this problem is driving mad. I have spent 2 days researching and I can't seem to find a fix for my problem.
This is it. When I open maps GPS takes about 15 to 20 seconds to fix... Not to big of a deal but what kills me is the GPS will just lose its signal for no reason and then just hang.... Or if I am sitting at a red light the position keeps moving. So one second I am here, and the next second I am there... And it keeps moving about 3 meters.
I find if I reboot then it is good for about 10 to 15 minutes and then it starts all over again.
I am running rooted 4.2 slimbean. 33 radio. But the problem persists no mater which ROM I install. It was also happening on stock before I rooted.
One more thing. I have tried all of the market apps like faster fix and so on. Nothing helps.
Anyone have the same problem or a solution.
I am going to have to sell then phone if I can't get GPS to start working properly.
Thanks to anyone who can help.
kevjef420 said:
When I open maps GPS takes about 15 to 20 seconds to fix... Not to big of a deal but what kills me is the GPS will just lose its signal for no reason and then just hang.... Or if I am sitting at a red light the position keeps moving. So one second I am here, and the next second I am there... And it keeps moving about 3 meters.
I find if I reboot then it is good for about 10 to 15 minutes and then it starts all over again.
Click to expand...
Click to collapse
Hi,
I'm not sure how you are determining when you have a fix but in any case don't use maps to try and diagnose, use "GPS Status" (https://play.google.com/store/apps/details?id=com.eclipsim.gpsstatus2) or a similar tool so you can see exactly what is happening.
If you have many tall trees or buildings then any GPS will lose its position and may need to start using network/wifi information.
Hope that helps,
Dennis
dbareis said:
Hi,
I'm not sure how you are determining when you have a fix but in any case don't use maps to try and diagnose, use "GPS Status" (https://play.google.com/store/apps/details?id=com.eclipsim.gpsstatus2) or a similar tool so you can see exactly what is happening.
If you have many tall trees or buildings then any GPS will lose its position and may need to start using network/wifi information.
Hope that helps,
Dennis
Click to expand...
Click to collapse
Well I consider a GPS fix when the symbol stops flashing and my location is shown on maps. that takes about 10 to15 seconds normally. i am trying to use GPS in the open no tress no buildings, also my previous phone SGS2 never had these issues so I know it is either hardware or software related but as I stated, I have tried different ROMs and different modems including stock before I rooted and I have the exact same issue.
This is unacceptable cause I travel a lot and I need a working GPS. I even use a T-Mobile sim when I travel to the states
kevjef420 said:
Well I consider a GPS fix when the symbol stops flashing and my location is shown on maps. that takes about 10 to15 seconds normally
Click to expand...
Click to collapse
I have a Nexus 4 on stock 4.2.2, I normally get a fix within a few seconds when out in the open. I have had no issues with the GPS and in fact its better than any previous Android phone I've had previously (Samsung, HTC, Motorola, I suspect the CPU speed helps here a lot).
I mentioned buildings because traffic lights are generally not in the open country.
dbareis said:
I have a Nexus 4 on stock 4.2. Normally get a fix within a few seconds when out in the open. I have had no issues with the GPS and in fact its better than any previous Android phone I've had previously (Samsung, HTC, Motarola I suspect the CPU speed helps here a lot).
I mentioned buildings because traffic lights are generally not in the open country.
Click to expand...
Click to collapse
Well I drive in city and outside of city. The problem presists either way. I never had these problems with my s2.
If i reboot it could be great for 10 or 15 minutes. Then it starts acting up. I know i have a problem when i see the halo circle around the arrowhead that represents my position. This is indicating that the gps fix is not great and there is uncertinty as to the exact location. Then it starts jumping around.
I installed the gps status app as you suggested and i can see the location jumping around in that app when i am at a stand still. Also it will show that i am travelling 10 km/h as it sees my position is constantly moving even though i not.
Again if i reboot everything will be fine for a while then this all starts to happen. After a bit it will loose my position completly and say searching for gps... Then it will never finf position unless i reboot.
It sounds like a hardware problem with your device.
Sent from my Nexus 7 using Tapatalk 4
korockinout13 said:
It sounds like a hardware problem with your device.
Sent from my Nexus 7 using Tapatalk 4
Click to expand...
Click to collapse
That is my biggest worry is that it is a hardware problem.
I bought the phone off of kijiji and I don't have original receipt. Don't think I could get warranty claim.

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