Database Info

My experience and ideas about GPS on GS4G

On Froyo
- doesn't work out of box (can see 2-4 satellites but no fix)
- used lbstest menu, changed mode to MS assist, 10 starts 5-7 fixes within 3 seconds
On Gingerbread
- doesn't work out of box (can see 2-4 satellites but no fix)
- no way to get into lbstest menu
- tried different roms, best case is getting a fix in minutes with Valhalla but not stable (drifting, losing fix, not accurate, etc.)
So I'm thinking, to fix this on GB, if only someone can figure out a way of changing the mode (standalone vs MS based vs MS assisted) or better have full access to lbstest or its equivalent on GB.
cheers
EDIT
Forgot to mention, I tried GPS Aids paid version as well (on Valhalla)
Purchased, tried the auto fix option, nothing happens;
Downgraded to V2 (read somewhere that it works better than V3 which is the current version in Market), tried clearing GPS folder (or something alike), phone suddenly rebooted.
Then it takes forever to verifying license.
Then upgraded back to V3, noticed that I need to uninstall V3 before intalling V2.
Did that, and instantly got email from Market telling me I have been refunded cuz I uninstalled the app...

GPS Aids worked perfectly fine for me.
Here's what I do:
1) I use GPS Doctor, which is supposed to cause you to reboot.
2) I download the GPS Aiding Data for Forced Method. Native Method doesn't seem to work for me, but there hasn't been a difference in my GPS performance.
3) Use GPS Status, which detects the satellites around you. You should be able to see some at the bottom. They are white at first, but once enough satellites are around and you're connected, they should turn green (not all, just some).
4) Use your GPS like you normally would.
I hope you're using your GPS outdoors, instead of trying to fix it indoors. It's very likely that it won't work when you're indoors. I practically get instant locks when I'm outside.

hummmmmmmmm

bkoon1218 said:
GPS Aids worked perfectly fine for me.
Here's what I do:
1) I use GPS Doctor, which is supposed to cause you to reboot.
2) I download the GPS Aiding Data for Forced Method. Native Method doesn't seem to work for me, but there hasn't been a difference in my GPS performance.
3) Use GPS Status, which detects the satellites around you. You should be able to see some at the bottom. They are white at first, but once enough satellites are around and you're connected, they should turn green (not all, just some).
4) Use your GPS like you normally would.
I hope you're using your GPS outdoors, instead of trying to fix it indoors. It's very likely that it won't work when you're indoors. I practically get instant locks when I'm outside.
Click to expand...
Click to collapse
By outside you mean walking on the street? I'm trying to get a fix while driving my car, you know, to get turn by turn directions. I hope a car qualifies as "outside". Anyway, I get a fix after several (lots of) minutes. I'm not going to paid for gps aid donate version. I paid a lot for my phone! (i'm not being cheap, it's just that where I live it isn't easy to get us dolars).
I think on froyo I had less waiting time for fix. But can't really tell. It's been so long since I moved to GB.
I think I'll end up selling my phone or giving it to my gf and get a sgs2 or galaxy nexus for myself.

have u tried a diffrent rom?

mikeflash said:
By outside you mean walking on the street? I'm trying to get a fix while driving my car, you know, to get turn by turn directions. I hope a car qualifies as "outside". Anyway, I get a fix after several (lots of) minutes. I'm not going to paid for gps aid donate version. I paid a lot for my phone! (i'm not being cheap, it's just that where I live it isn't easy to get us dolars).
I think on froyo I had less waiting time for fix. But can't really tell. It's been so long since I moved to GB.
I think I'll end up selling my phone or giving it to my gf and get a sgs2 or galaxy nexus for myself.
Click to expand...
Click to collapse
Have the same problem here
...try every app In the market to fix it and nothing ..until I was driving and I let the GPS sit for 4 mins and start working since that day I start doing the samething and works but just take long to start working ...I think it ain't the rom cuz I have flash to almost every rom to fix this and stills the same ...but everyphone different urs mite work with another rom try it out ..!!
Sent from my SGH-T959V using xda premium

Outside, open space with literally no tall building around, actually the same spot where I got a fix in 2 seconds on froyo.

Finally decided to check mine and it sucks too. Turned on sensor aiding and it zeroed in on my local instantly.
Sent from my SGH-T959V

some types of window tint will block gps signals, so keep that in mind if you have tinted windows in your car.

GPS doesn't lock..

Good evening guys-
After updating from ICS to JellyBean, my gps cannot find or lock onto any satellites.
If I enable wifi, its accurate to 20meters.. If not, it won't lock even after 15 minutes.
Any help is greatly appreciated-

mine has been similar in PA2.00 and CM10.
It actually will lock after a long time. Sometimes up to 30 minutes.
Interested in any answers... I noticed in the gps.conf file agps appears to be off. I don't know if that is the issue.
Unfortunately searching for a fix just reveals too much information with a lot of supposed fixes, but no consensus so far as i can tell.

brian Marshall said:
mine has been similar in PA2.00 and CM10.
It actually will lock after a long time. Sometimes up to 30 minutes.
Interested in any answers... I noticed in the gps.conf file agps appears to be off. I don't know if that is the issue.
Unfortunately searching for a fix just reveals too much information with a lot of supposed fixes, but no consensus so far as i can tell.
Click to expand...
Click to collapse
Actually agps was turned off to improve lock times...some people noticed no difference with it off, others noticed huge improvements with half the lock time
You can change it to true, then wipe cache and dalvic cache in recovery and see if it makes a difference
Sent from my SGH-I997 using Tapatalk 2

mg2195 said:
Actually agps was turned off to improve lock times...some people noticed no difference with it off, others noticed huge improvements with half the lock time
You can change it to true, then wipe cache and dalvic cache in recovery and see if it makes a difference
Sent from my SGH-I997 using Tapatalk 2
Click to expand...
Click to collapse
is that a 'go ahead and try it, it wont work, but go ahead and try it anyway' ?
It seems like a lot of people are having problems with GPS in jellybean, and some aren't. There's so many 'this worked for me' solutions, but I'm starting to think it's coincidence.
Someone mentioned installing and running copilot once. Did that. it didn't work. Without root permissions what could it really change to improve anything?
I ran Faster Fix. It edited my gps.conf file (which it doesn't tell you that it does) It didn't help. it might have made it slightly worse.
I found a few other gps.conf files for jellybean ROMs, but haven't tried those yet.

This is how we learn and share our info, by trying. Just make a back up of anything that you want to change or replace.
GPS works perfect on my PA Jelly Beaned Infuse. First I ran GPS Test, it took a good twenty minutes if not more for it's first lock.
But now, I get a lock in a few seconds.
GPS Test, is free in the market.
Planning my escape!

GPS Test has kicked my GPS in the butt and got it working with almost every ROM I've flashed. Once you get over that first delay (downloading satellite data?) the first time you run it, it locks on fairly well afterward. At least, that's been my experience

Truckerglenn said:
This is how we learn and share our info, by trying. Just make a back up of anything that you want to change or replace.
GPS works perfect on my PA Jelly Beaned Infuse. First I ran GPS Test, it took a good twenty minutes if not more for it's first lock.
But now, I get a lock in a few seconds.
GPS Test, is free in the market.
Planning my escape!
Click to expand...
Click to collapse
I've already done that. It helped the next time I ran maps. When i left work yesterday I had maps give me turn by turn directions home. It took a couple minutes to lock, but after that it was working.
Then this morning I tried again. It wouldn't lock at all on the way in to work this morning. (only a 15 minute drive)
I also tried editing my GPS conf file this morning. I tried using ES file explorer, root explorer, and flashing. All three resulted in an empty file. ES says it was successful. Root explorer gives an error message 'there was not enough free disk space to complete the paste operation'
Flashing says it was successful, but again, it ends with an empty file. 0 bytes.
The file i used for the flash attempt is here. http://forum.xda-developers.com/showthread.php?t=1817558
With the gps.conf file I'm going to go leave the phone out in my car with gps on and see if it locks.
I understand that developers do a lot of work on this. I'm not trying to be a jerk. I just see a lot of people having the same issue and no agreement on a solution or even what the actual problem is.

brian Marshall said:
...
I understand that developers do a lot of work on this. I'm not trying to be a jerk. I just see a lot of people having the same issue and no agreement on a solution or even what the actual problem is.
Click to expand...
Click to collapse
I believe this is because there is no solution. If you want to try to help solve the problem, "adb shell" in and start tinkering.
You'll quickly find that GPS is anything but an easy thing to fix. A good SUPL provider for you may be completely different for others.

I can't find the Answer that fixed it for me,
but what I did:
Plug phone in, disable wifi, leave phone near window, and let
https://play.google.com/store/apps/...251bGwsMSwyLDYsImNvbS5hbmRyb2lkLmdwc3Rlc3QiXQ..
that app run... :45 minutes later it locked (GPS icon on Status Bar stopped blinking and showed locked, solid) with 7 satellites.
waited, rebooted the phone, and it locked in about 3 minutes.
-hope this helps.
other than that, love this ROM!

choffman said:
I believe this is because there is no solution. If you want to try to help solve the problem, "adb shell" in and start tinkering.
You'll quickly find that GPS is anything but an easy thing to fix. A good SUPL provider for you may be completely different for others.
Click to expand...
Click to collapse
Now that is an actual answer.
I suppose part of the problem for us noobs sorting through 300 page threads is all the filler with people saying "great rom omgz so awesome" even when they are posting on the first page and the ROM hasn't even been up long enough to do much more than flash it and swipe through the home screen.
All through out the CM10 and PA threads there are people saying GPS is working flawlessly... and then other people saying they have some fix. I guess people aren't supposed to post frivolous stuff in the dev threads, but they do.
Anyway, I ended up going back to GB as GPS is something I really need.

Hey guy's, i've also been having allot of issues with GPS just not being what it used to be, and it's pretty obvioius that this is an issue across the board for all JellyBean roms. I think those who mention that "GPS works flawlessly" don't quite understand the issue with AGPS (Assisted GPS), or they are not quite testing it thoroughly enough to see the problem.
To get an understanding of what AGPS is, and how it helps improve initial lock times, have a read here: http://en.wikipedia.org/wiki/Assisted_GPS
Also, to gain a better understanding of what I mean by "cold start" as you read below, and how it differs from a warm or hot start please read the following: http://m.gsmarena.com/glossary.php3?term=gps
That being said, i have been doing allot of digging in the hopes that someone out there has a solution to the problem with AGPS on the CM10 based ROMs on our phone.
To clarify the problem: AGPS does not seem to work and Initial lock times from a cold start can take several minutes, (this is not normal if AGPS is doing it's job). To clarify further, no one is saying that GPS does not work, it does in fact work, it just takes it's sweet time to lock and it seems to rely on pure GPS to download ephemeris data from the actual GPS birds for satelite lock acquisition, rather then downloading AGPS data over the network to speed things up. After the initial lock though, GPS functions as it should. After this point, if you do not use the phone again for several day's, it seems that upon first firing it up again you will experience the long delay in first lock. This is especially true if you keep GPS services turned off ussually to conserve battery. Those who report GPS is fine are probably keeping GPS services on all the time, and your GPS is probably working in the background at times and obviously will start up allot faster then it would from a cold start. (This is where i believe all the conflicting info comes from!)
The only info i have been able to find that did actually have an impact on my lock times was the thread below.
http://forum.xda-developers.com/showthread.php?t=1881655
I just started testing this out yesterday and i have seen some positive results. But i would caution those of you out there, and say that this is probably not a "fix" per se, but it did help cut down lock times in my case and at the very least it is a very inoformative thread that everyone should read.
What i have realisticly been able to achieve from a cold start is about 75 seconds to lock at the fastest. i.e. GPS services were off, i turned them all on, and now i started up GPS Status or GPS Test to get a lock. After that, as long as I haven't rebooted my phone it takes only a few seconds to lock.
How i tested, i started GPS Status, I then went to Tools --> MANAGE A-GPS STATE -> RESET (This is important to ensure you are clearing previously cached data. We want to make sure your previous cached info does not skew the effects of your changes.
I then replaced the gps.conf with the one contained in that thread, and i also made the change that was suggested in the Notes section that suggested modifying or adding a line in your build.prop file to "ro.ril.def.agps.mode = 1". This change set's your gps to use AGPS in Mobile Station Based (MSB) mode. For reference, setting it to "2" would set your AGPS to function to Mobile Station Assisted (MSA) mode. (Mode 1 - gave me more accurate initial locks at the expense of a bit longer lock times, Mode 2 gave me slightly quicker initial lock times, but was rather flaky and my position drifted quite a bit until GPS was running for quite some time.)
If your curious what is the difference between the two modes, see here: http://en.wikipedia.org/wiki/Assisted_GPS#Modes_of_operation
After making the changes to gps.conf and build.prop i rebooted my phone. When phone reboots, i then go back into GPS Status app, select settings, Tools --> MANAGE A-GPS STATE -> RESET, and then back to settings, Tools --> MANAGE A-GPS STATE -> DOWNLOAD (This should force the phone to attempt an AGPS download, if it hasn't already done so upon launching the app).
I have seen this same gps.conf being used in the newer RemICS-JB build. However based on the lack of feedback in that thread, i don't know if this is the golden fix we have all been looking for.
Even though this may not fix all your issues, i hope at the very least it helps clear up what the actual problem is, and how AGPS is supposed to work.
** Important Notes: **
- The version of the config that i was using was the Download the Google Specific No-SSL v3.1
- If you use the SSL version, then it will also require that you download the certifcate file. It's best to just stick with NO SSL as is explained in the thread.
- You should also note that i have cleaned out all the live wall papers, face unlock, and allot of other crap that i don't use to free up space in the /SYSTEM partition. I now have aproximately 21MB free in this partition. I think at least part of the problem with certain ROM's is that they have the /SYSTEM partition filled to the max with virtually no free space at all. I'm no expert on the subject, but i'm guessing that the AGPS data get's downloaded to this partition some where. Obviously if there is no space, then that would cause issues. Several others have reported shortened initial lock times after making room in the /SYSTEM partition.
- Another mistake people are making when testing AGPS and reporting false info, is having their WIFI on when testing GPS. To isolate the issue guy's you need have wifi off and you need to use a tool like GPS Status or GPS Test that shows that actual lock to satelites. You cannot properly test this and see the issue by using WIFI and turning on Google maps. Google maps will look at your reported wifi position and to you it looks like bamm.. i just got a lock in 2 seconds to withing 50 meters, wow these guy's are nut's, my GPS is awesome. Guess what.. your wifi and google maps is awesome.. not your GPS.. lol
- If anyone is familiar with running log's, it would be great if you could do a comparison of before and after. Showing the log of a completely fresh JB build, that shows that the AGPS data is not being downloaded, and then another log after all the changes above (including freeing up space in /SYSTEM) and hopefully it will show that AGPS data is now being downloaded and utilized. I myself am not familiar with logging data on the infuse, so i cannot and will not call this a fix until someone can actually show with real log's that AGPS data is now being utilized after these mods.

Thankfully, I'm one of the lucky ones who have always had a working GPS. It worked great when I was running AT&T stock Froyo, really good while I was on XDA GB roms, and fair > good after I went to PA JB. By far Scott's latest release of PA JB has been the best in this respect, but I can't help but tinker now that I've turned into a Droid zombie Strictly speaking the stock GPS configuration included on Scott's PA JB ROM worked charmingly, but I still had an issue whenever the phone went into deep sleep (say overnight without using it) the GPS lock the next morning took almost as much time coming from a sleep state as a cold boot. So, Like DaMeatMan I decided to give http://forum.xda-developers.com/showthread.php?t=1881655 a go. I chose the flashable option, and like DMM also edited the prop file. I picked the Google "no SSL" version 3.1 instead of the AT&T specific version. I figured I would give that one a try.
I'll keep everyone posted, buy my first impression (could be placebo effect) is that this configuration file and modification actually does improve over the original PA JB configuration by a small margin. Reported accuracy is better (by 10ft on average). Satellites in view and actually locking are 1-2 better than before. My main hope is that I can actually fire up Navigation in the morning and get working directions without having to fire up GPS Test first and relock all the NA satellites. I travel a lot, both for business and outdoor sports (hunting and fishing), and I have come to rely pretty heavily on GPS. I got spoiled when I got my first GPS capable phone because that meant I could leave my handheld GPS at home most of the time and that was one less thing I had to carry.

wevsspot said:
Thankfully, I'm one of the lucky ones who have always had a working GPS. It worked great when I was running AT&T stock Froyo, really good while I was on XDA GB roms, and fair > good after I went to PA JB. By far Scott's latest release of PA JB has been the best in this respect, but I can't help but tinker now that I've turned into a Droid zombie Strictly speaking the stock GPS configuration included on Scott's PA JB ROM worked charmingly, but I still had an issue whenever the phone went into deep sleep (say overnight without using it) the GPS lock the next morning took almost as much time coming from a sleep state as a cold boot. So, Like DaMeatMan I decided to give http://forum.xda-developers.com/showthread.php?t=1881655 a go. I chose the flashable option, and like DMM also edited the prop file. I picked the Google "no SSL" version 3.1 instead of the AT&T specific version. I figured I would give that one a try.
I'll keep everyone posted, buy my first impression (could be placebo effect) is that this configuration file and modification actually does improve over the original PA JB configuration by a small margin. Reported accuracy is better (by 10ft on average). Satellites in view and actually locking are 1-2 better than before. My main hope is that I can actually fire up Navigation in the morning and get working directions without having to fire up GPS Test first and relock all the NA satellites. I travel a lot, both for business and outdoor sports (hunting and fishing), and I have come to rely pretty heavily on GPS. I got spoiled when I got my first GPS capable phone because that meant I could leave my handheld GPS at home most of the time and that was one less thing I had to carry.
Click to expand...
Click to collapse
I have been have many of the same problems as others in this thread but I tried the fix in the S3 thread quoted above and it seems to have helped for right now. The first time I ran GPS Test after rebooting it did take a while (5-8min), but after that I get a lock in few seconds. I used the Google "no SSL" package also. I will do some more testing tomorrow and see if its reliable.

[Q] GPS issues

I read a while back that there was something that can help your phone lock on to GPS faster. Recently I have been having issues locking on to GPS without restarting my phone. When I restart it, it picks up GPS right away. But if the phone has been running for a few days it always says "searching for GPS" in Maps. Is there something I can flash to make it lock on quicker? So I dont have to restart my phone when I want to use GPS or Maps/Navigation? It has always done this on whatever ROM I flash.

I don't know if it will help with your situation or not but I use an app called GPS Test. Tons of useful info and such. Also allows updating of agps data. My GPS seems to lock quickly
https://play.google.com/store/apps/details?id=com.chartcross.gpstest
Good luck
Sent from my GT-N7100 using xda app-developers app

GPS test didnt do anything. I thought there was something that was posted that you could flash that would make it lock on faster? But I cant find it now. I always have to restart my phone to get driving directions in Navigation. But the thread did have to do with a-gps. i just cant find it...

itsLYNDZ said:
GPS test didnt do anything. I thought there was something that was posted that you could flash that would make it lock on faster? But I cant find it now. I always have to restart my phone to get driving directions in Navigation. But the thread did have to do with a-gps. i just cant find it...
Click to expand...
Click to collapse
There's a patch for HTC devices that uses an alternate data source for AGPS data. It *might* work on this phone-- I don't know why it wouldn't. Perhaps that's what you read.
Also, the updated Play store fixed an AGPS lock issue with HTC devices. Again, it appears this is only an HTC fix, but it could be what you came across elsewhere and are referencing above.
I haven't used "GPS Test", but there are two different apps named "GPS Status" in the play market. Both allow for AGPS location data to be refreshed, and produced satisfactory results on my HTC Sensation. They appear to be device agnostic, and would be worth a try. I went from a maximum fix of 4-6 satellites on my Sensation up to 12-15 satellites (under ideal circumstances).
Wifi and bluetooth can also cause occasional fix issues-- make sure both are turned off. I get massive GPS lock problems with Wifi turned on-- not so much with bluetooth.

I know this is a old thread but I thought it would be useful if I would share this. It was a fix for the Hercules but since its like our big brother (lol) I think it should work for our here blaze..
http://forum.xda-developers.com/showthread.php?p=9923176
Sent from my Carbonized Blaze

I think the OP is talking about the AGPS Lock. http://forum.xda-developers.com/showthread.php?t=2016611

weak GPS signal problem?

Is anyone experiencing problem with their GPS signal? Mine would lose the GPS lock constantly. Thanks.

Working fine on my end. Out and back, my drive was 5 hours total.
Sent from my VS995 using Tapatalk

No, no problems at all. And I used the GPS allot.
Sent from my LG-H918 using Tapatalk

Make sure yours is set to High accuracy. Mine was not after set up. I had to change.
Sent from my SM-T813 using Tapatalk

Even in high accuracy, I lose the gps signal frequently. Sigh

Do you have a case on your phone?
I just got my cases in and have noticed weaker gps performance since putting the phone in a case.

I've been having major GPS problems. Going for a run and expecting the phone to track my route and calculate my speed accurately shouldn't be too much to ask in late 2016. But my phone constantly loses the GPS signal (this was never a problem with my previous phone in the same location) and even when it doesn't, it can't figure out where I am. My run traces often show me two streets over in addition to thinking I'm jumping back and forth across a busy 5-lane road every 5 seconds or so. I run 6 miles and the phone thinks I've gone 8.25. Not useful for training for events.
Even if you don't want to use the phone to track exercise, there's another reason the bad GPS is annoying. It makes it impossible to take advantage of the feature allowing you to unlock the phone without using your fingerprint or pin based on your location. I have my phone set to be unlocked at home, but the phone apparently can't tell when I'm at home, making this setting completely useless.
As to GPS issues while driving, I haven't noticed them, but I've not used the phone for navigating either.
Would like to mention that while I have a case on it, it is quite light and doesn't seem like it should interfere so badly with the GPS. Will try checking the accuracy without the case and will update if this resolves the issues. Also, I have tried tinkering with the GPS accuracy settings but even selecting all the options to optimize accuracy has not worked for me.

The only thing you can do to test the case theory is to use the phone without that case. That said, it is possible you have a defective phone. I have read many articles about poor GPS being caused by a loose, internal connection. You might want to take your phone to a repair facility and have them check it out.
I have a US996 and, so far, GPS is nice.

how
wtharp2 said:
The only thing you can do to test the case theory is to use the phone without that case. That said, it is possible you have a defective phone. I have read many articles about poor GPS being caused by a loose, internal connection. You might want to take your phone to a repair facility and have them check it out.
I have a US996 and, so far, GPS is nice.
Click to expand...
Click to collapse
how can you change it to high?

No issues on my end yet, I use it navigating on a daily basis (racking up Waze points basically) and walking around, can't think of maybe one time it lost GPS driving and that was only briefly.

Mine was misbehaving horribly. I tried using google maps to see if it was something to do with Navigon, (my normal gps app) and somehow it seems like just running maps fixed it. It has been working great with Navigon now.
Go figure.

GPS on my Sprint version has worked great in all 3 options since day 1
Sent from my LG V20 using XDA Labs

On my rooted VS995 software version VS99513A on notsostock kernel v1.2 the GPS seemed to never be able to locate my current location. When I used it before without root it picked up quickly. Am going to try nostock kernek v1.1 the updated version and see if I get a difference. Plus now am running magisk instead of supersu so will see if that makes a difference.

It's possible that the a-gps data is corrupt. I'm not sure how you'd go about clearing that. There must be a cache file associated with gps daemon.
Try installing this:
https://play.google.com/store/apps/details?id=com.eclipsim.gpsstatus2
And when GPS isn't working, run the app and see if it's receiving/decoding any satellites at all (bar lengths indicate strength, colour indicates successfully received all ephemeris data from satellite and therefore has lock - it can take a while without a-gps).
---------- Post added at 08:29 AM ---------- Previous post was at 08:27 AM ----------
P.s. I found that taking the back off my phone improves Wi-Fi. Metal blocks radio signals.
If you have low or no signals in a specific location, try popping the back of the phone and seeing if the signals become useable.

mmar3087 said:
Is anyone experiencing problem with their GPS signal? Mine would lose the GPS lock constantly. Thanks.
Click to expand...
Click to collapse
Sorry to bring up an old thread. I just bought a used LG V20 (at&t version, H910) on Craigslist the other day, and have had GPS issues that made me highly annoyed like I bought a lemon phone, and was getting ready to call LG Support, and pay a lot of money for repairs.
Happily, I did discover a trivial solution that I haven't really seen, so I thought I'd share it.
After I purchased the phone, I factory reset it. It seemed like the device would be able to triangulate a position, but it would be unreliable, move around, and the accuracy would be highly variable. (observed in Google Maps and Waze). These symptoms seem to be consistent with other people's experiences. The useful and highly recommended "GPS Status" and "GPS Test" apps, that normally show visible satellites were showing ZERO satellites. As suggested in various places, I used "GPS Status" to re-download the A-GPS databases, set "sensor filtering" to medium. Still, zero satellites, but a semi-functional GPS, which is confusing. I found the hidden menu code for the H910 (*#546368#*910#), and SAAT->"Manual Test"->"GPS/BT/Wifi test" and ran the hardware-level GPS diagnostics. I was getting signals of 0.0 db for GPS and GLO satellites, kind of suggesting the GPS hardware was faulty, and made me even less optimistic/more annoyed.
I was basically convinced GPS on my phone was kaput, and would need to be serviced, until I discovered ........
Rebooting the phone solved all of the GPS problems, and made GPS and GNO satellites visible and now GPS is 100% functional. It seems that since I initially factory reset the phone and did my normal installation, I never did a simple reboot. Since I haven't seen that kind of obvious solution on any of the forums, I thought it would be useful to report. I'm cautiously optimistic that was my only problem ......
good luck
=mxasf=

Bought a used one and having problems: it'll fix on several satellites but it's usually unable to acquire the specific location (latitude and longitude). Depending on the program, it will say "waiting for GPS fix" in osmtracker or "looking for GPS location" within 'GPS Status' (the app).
When it does get a 'Lock' (a specific location), its accuracy is 200-300m off. :/
I tried some of the other common tips and tricks:
I've downloaded new A-GPS data (using the 'GPS Status' app); tried using the GPS without my case on; doing a simple reboot, none of them work.
After more searching, I found this guide: https://imgur.com/a/VxeaU which recommends to place copper tape on the GPS antennas of your phone.

i have 2 V20's.. the one i bought back for myself is 12/2016 and another one is another batch 3/2017 for my wife..
What i'll found is the earlier one ( 12/2016 ) have the following issue :
- overheat
- kaput gps
- screen burn
While the one i bought for my wife ( 3/2017 ) doesn't even have the following issue above.. Furthermore, the screen also different.. my wife V20's tend to have a more saturated color, brighter screen and doesn't overheat as much as mine..
My conclusion is, only those with earlier batch of production have all this defect.. and to those who own it ( including me ).. i guess, we're unlucky!
i'll use my wife V20's as gps since mine V20 is good for nothing when GPS is a needs.... if she's not around, i'm totally doomed !
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if you guys wonder, there was no different in camera.... unlike G6 ( pheww~ )
both my and my wife V20's produce the same images quality..

mxasf said:
Rebooting the phone solved all of the GPS problems, and made GPS and GNO satellites visible and now GPS is 100% functional. It seems that since I initially factory reset the phone and did my normal installation, I never did a simple reboot. Since I haven't seen that kind of obvious solution on any of the forums, I thought it would be useful to report. I'm cautiously optimistic that was my only problem ......
good luck
=mxasf=
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Click to collapse
It's an old common fix

skorasaurus said:
Bought a used one and having problems: it'll fix on several satellites but it's usually unable to acquire the specific location (latitude and longitude). Depending on the program, it will say "waiting for GPS fix" in osmtracker or "looking for GPS location" within 'GPS Status' (the app).
When it does get a 'Lock' (a specific location), its accuracy is 200-300m off. :/
I tried some of the other common tips and tricks:
I've downloaded new A-GPS data (using the 'GPS Status' app); tried using the GPS without my case on; doing a simple reboot, none of them work.
After more searching, I found this guide: https://imgur.com/a/VxeaU which recommends to place copper tape on the GPS antennas of your phone.
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Click to collapse
I followed that guide (credit https://www.reddit.com/r/lgv20/comments/7fx2gz/becareful_buying_the_top_plastic_bezel_of_the_v20/)
and bought copper tape (https://www.amazon.com/Copper-Conductive-Adhesive-1inch-12yards/dp/B018RDZ3HG) off amazon.
For me and my VS995; there were metal contacts (see picture 1 of the imgur album) and the metal contacts were silver, not gold.
Nonetheless, I put some copper tape only on the first contact as shown in picture 1 and my signal improved dramatically. The lowest accuracy that I can get (lower is better) now is about 8m and it has been hovering around 15m; and still takes a few seconds to
This is compared to my s5, where I could get an accuracy as low as 4-5m and usually hovers around 8-10m and could obtain my location within 10 seconds after turning on GPS.

Help: GPS is wonky

My phone is 100% stock. I have noticed that sometimes when I go to use GPS, I fail to get a fix, or I get a fix on a location that is between 500 ft and 20 miles away. I first noticed the problem in Google Maps, but I believe that all other GPS-using applications have the same problem. I first noticed this perhaps a few weeks ago. When it gets into this mode, it will usually resolve itself after 1-20 minutes of continuous use.
I've downloaded both the "GPS Test" and "GPS Status" apps and had several thoughts:
1) I thought this might be related to data in Google Maps. I deleted all the data and cache from the Settings->Application. No difference.
2) I reset and re-downloaded the AGPS information. I initially thought this made a difference, but I no longer think so.
3) Sometimes rebooting seems to resolve the problem.
4) I thought maybe some hardware was damaged causing me to get a weak signal, but in one case where it was unable to get a fix it actually saw at least 10 satellites, probably at least 6 of those had a "green" (30+ dB SNR)
5) I thought the problem is initiated by going into Google Maps and the other applications worked so long as you didn't go into Google Maps. I no longer believed that.
6) I've set location services to device only as well as high accuracy. I don't see a difference.
I think I've had similar problems in the past and recall fixing it somehow (in software) -- but I can't figure out what was done.
HELP!

I'm on a custom rom and have noticed the same thing within the past couple of weeks. It used to be fine, but now it can way over a minute to get GPS lock. Sometimes it thinks I'm still where I was a long time ago or somewhere completely different. This is in google maps too. Waze also has trouble locking on frequently now so I doubt it's an app issue.

iivisionii said:
I'm on a custom rom and have noticed the same thing within the past couple of weeks. It used to be fine, but now it can way over a minute to get GPS lock. Sometimes it thinks I'm still where I was a long time ago or somewhere completely different. This is in google maps too. Waze also has trouble locking on frequently now so I doubt it's an app issue.
Click to expand...
Click to collapse
I've had it take 10-20 minutes in some cases, it always reports a location within 30 miles of me, but that's still way too far to be helpful. I've sometimes had it report locations within a half mile of me and that's still equally useless. Once locked, it seems to stay locked. for my entire usage, will later be off, even if you start at the same location you last used it (i.e. use Google Maps to drive somewhere, and then leave a couple hours later using Google Maps).
The other really weird thing about this is that I had initially thought there was maybe a problem with the GPS receiver itself, like the antenna was damaged or the feedline between the antenna and the receiver, etc. But I've gone into GPS Status or GPS Test applications and it gives SNRs from each satellite, and its got adequate SNR from enough satellites to get a 3D fix even when it doesn't have one, which implies its something goofy in the software somewhere.
It does seem to have gotten better in the last few days, maybe?

I'm not entirely sure what the problem is. I did change my battery out personally a couple of months back. I was wondering if I may have damaged something. As far as GPS fix and those other apps, yes it does lock on, but it does take a little longer than I would take to lock on. Mine sometimes takes quite a while, like 5 minutes+ like yours to fix too.