yashsingh1/xdaforums huggingface dataset:
[AT&T Galaxy Note 3 Q&A, Help & Troubleshooting] gold3ndrag0n:
And that right there is the problem. It seems there's quite a few different problems with the GPS, there's the glitchy GPS like what's described by the users above with inaccurate GPS. Then there's our problem, what you're experiencing with your 3rd replacement is what I'm experiencing. The GPS is NOT INACCURATE, it just loses signal when switching from 4G LTE to 4G such as the case when leaving coverage area or receiving/making a voice call and when plugging or unplugging the charger.

I could be wrong but it seems like every person that's said their GPS problems are solved after flashing different ROMs seem to all have experienced the glitchy/inaccurate GPS issue and not what we're experiencing. Ours only happen under 2 sets of conditions, change in network state and plugging/unplugging of charger. Otherwise the GPS is spot on.

Could anybody that's experienced the GPS issue of signal lost that ONLY happens under the 2 criterias of change in network state, i.e. going from 4G LTE to 4G or 3G or vice versa and when plugging or unplugging the charger let us know if you've had any luck in correcting the problem by flashing a different ROM or radio?

---------- Post added at 04:05 PM ---------- Previous post was at 04:04 PM ----------

Ok thank you, so that squashes the theory of it bugging out on MJ5 since it was working for you on MJ5 for a while.

---------- Post added at 04:43 PM ---------- Previous post was at 04:05 PM ----------

I don't think you have the same problem as us, what you're talking about with the yellow bars and green bars has to do with GPS ACCURACY. Green bars will give you a more accurate reading and has a lot less to do with GPS signal. Yes having low GPS signal = orange or red bars, but as long as you're still picking up the GPS signal then you've haven't lost it. When you're in GPS Test you see those bars fluctuating up and down, yes? What happens to our phones while we have GPS Test active and the charger is plugged or unplugged, the bars stop fluctuating period, everything just freezes. It's like the GPS chip gets unplugged or something, it stops functioning. GPS Status & Toolbox shows in realtime your GPS fix, when you plug/unplug the charger the GPS fix stops at that exact second. AndroiTS GPS Test Free shows that when you plug/unplug the charger the GPS chip actually gets switched on/off. Not sure if that's accurate but it seems to be the case. That's why we need to see if it's a software problem doing that or if it's something hardware.
[AT&T Galaxy Note 3 Q&A, Help & Troubleshooting] max12354:
The Fix

you are right, what I said is not the main problem let me say it's side effect. I will tell you my main problem. I drive to work 75 mile each way 3 times a week. The Gps started to disconnect 2 to 3 time one way then start to disconnect 8 to 9 time the other way than worst until I use many gps program to clean the data and the same problem stated again 2 time then more and when I am driving ot fix the disconnect I just switch gps off and on to get it started again . After X-note 7 I never had any disconnect I even deleted all gps software because I don't need them anymore.
[AT&T Galaxy Note 3 Q&A, Help & Troubleshooting] undrwater:
Another "me too". I will have to check more closely, but I'm pretty sure I lose signal around the same locations; so the theory about radio makes sense. I was nearly positive that this only happens with Google maps, so I'll test with both waze and copilot which I use frequently. I was relatively site that neither of these exhibited this behavior, but now I will confirm.
[AT&T Galaxy Note 3 Q&A, Help & Troubleshooting] dakleenupman:
Add another one! I too have the GPS issues. And through reading I can agree that during LTE to 4G and such changes, the GPS loses signal. It happens on Maps AND Waze. I haven't even tested the charge/uncharge method as of yet. I am stock, No root and on MJ5.
[AT&T Galaxy Note 3 Q&A, Help & Troubleshooting] undrwater:
Drove this morning (same route where google maps lost signal previously) using CoPilot, and it never reported missing GPS. Perhaps CoPilot is less "sensitive" to GPS loss than google maps, and keeps running until an expected waypoint has been passed, but it didn't seem like that. I recall when driving under the airport runway, the screen would change color to let you know the signal was temporarily lost. I didn't see this happening.

I'll try again tomorrow using Locus Pro.
[AT&T Galaxy Note 3 Q&A, Help & Troubleshooting] Rukbat:
I've never had that much inaccuracy (sometimes close to 100 feet, but usually between 16 and 32 feet), but playing with GPS Status and the USB cable I did notice that either plugging in or unplugging will drop the satellite display (all the dots, then reacquire them almost instantaneously. But is it a problem? GPS essentials shows it a little differently.

I'm beginning to suspect 2 problems, one the power plug, the other the 4g/LTE switch (which I haven't even attempted to check yet). When you connect or disconnect the charger (or computer USB port or whatever), you're creating quite a lot of electrical noise. It's visible on any receiver sensitive enough (and a GPS receiver is very sensitive). It's weak enough that the receiver has to be close to the power connection, but the GPS antenna in the phone is pretty close - only a few inches. (And my receiver can pick the noise up for over a foot.) I suspect that the noise is just blanking the receiver out for a moment. If that's the case, there's nothing that can be done to "fix" it. Making and breaking an electrical contact is going to create noise. (They could probably prevent that in a lab, but you wouldn't want to carry the resulting device with you.)

Someone else is going to have to do the thinking about the 4G.LTE part of it. I don't have the equipment to see what's happening when it switches.
[AT&T Galaxy Note 3 Q&A, Help & Troubleshooting] gold3ndrag0n:
Then probably not the same issue. For me and others GPS signal gets lost in Maps as well as GPS test apps. In the apps it shows that GPS fix just goes away, in AndroTS GPS Test it even shows the GPS chip as being powered off when it happens. You can also leave Maps or other navigation apps open and try plugging/unplugging your charger and see if the signal gets lost. If it doesn't then it's not the same problem.
[AT&T Galaxy Note 3 Q&A, Help & Troubleshooting] gold3ndrag0n:
Very interesting. For me as well as others, after plugging/unplugging the charger the GPS fix does not come back, I've waited about 30-45 seconds before to see if it gets a lock again but it doesn't, haven't tried waiting longer. When looking under GPS Test and GPS Status & Toolbox, it shows the GPS fix being dropped when plugging/unplugging. AndroTS GPS Test actually shows the GPS chip gets turned OFF when you plug/unplug. Not sure if that's right but does make sense, why else would the icon in the notification bar go away as if you've just turned off GPS and why would we lose lock.

As for the electrical interference, yes it is true that every time you're closing a circuit you're creating electrical noise but here's a few things to consider: it doesn't happen to all Note 3s, it didn't happen at all to all the previous generation Notes, doesn't happen to any other manufacturer. Samsung is not so primitive in technology that they can't shield from a bit of electrical noise compared to other manufacturers and if they've been able to do so in the past how can they not do it again. Plus it also doesn't happen to all Note 3s. As you're navigating and you hear a "GPS signal lost" and your navigation stops working, it'd be a pretty big deal to most people so if they haven't come pouring into the stores or online forums by now then most likely they're not experiencing it. And as you're driving you're bound to switch coverage areas and there's also a high chance if you plugging/unplugging your car charger so the two criterias are going to be met quite often, so can't say it's because they haven't met the conditions for the issue to appear.
[AT&T Galaxy Note 3 Q&A, Help & Troubleshooting] undrwater:
Yep, same problem or nearly so. I did not unplug power while using CoPilot, but the apps you mention give the same results. I think I'm going to see if I can create a tasker profile as a work-around. Hoping new firmware fixes this.

Even if this is some kind of signal noise on some of the Notes (perhaps bad or incomplete shielding on some?), I believe there can be a good software hack that tells the GPS to ignore the noise and continue on.
[AT&T Galaxy Note 3 Q&A, Help & Troubleshooting] kwstump:
I wanted to make sure everyone with GPS problems does a warranty exchange. I had a GPS antenna labeled #1-3 with the GPS dropping on handoffs as described earlier and the ATT replacement with #4-3 seems to be doing the trick. I have not been on any major roadtrips to test but no loss of signal in the last 2 weeks. I too waited months to do a replacement but was about to go back to my S-4 with all the GPS signal losses. Replacement has been great! ATT did not have any records of the problems but I bet a ton of note 3 users do not use it for navigation! They did not give me a hastle with the return either (My Second)

Will update if I have any problems in the future

Kevin
[AT&T Galaxy Note 3 Q&A, Help & Troubleshooting] hotbyz168:
Good morning everyone,

Does anybody happen to have a flashable zip of one of our modems? I am currently on vacation and have no access to a computer to run Odin and mobile Odin will not run on our devices unfortunately.

The problem is I can't get gps to even turn on does not see satellites or anything. Gps status shows 0/0 after 20 minutes of scanning on a table outside on a clear sunny day. Seems my modem file has been corrupted. Tried every flashable rom we have including stock odex and deodex Thanks for everyone's help!
[AT&T Galaxy Note 3 Q&A, Help & Troubleshooting] gold3ndrag0n:
This has mostly been confirmed as a software issue, head over to this thread for more info:

http://xdaforums.com/showthread.php?t=2612757

Also within that thread has my post and a link to AT&T forums where a few of us have also confirmed it's some sort of software problem.
[AT&T Galaxy Note 3 Q&A, Help & Troubleshooting] Paulita1:
I was also noticed the same thing and lower signal quality as well.
[AT&T Galaxy Note 3 Q&A, Help & Troubleshooting] hotbyz168:
The problem is with mine, my gps reciever doesn't even turn on. Right after a clean flash on multiple roms. This is why I think I have a problem in my baseband.
[AT&T Galaxy Note 3 Q&A, Help & Troubleshooting] prophet of doom:
I don't think it's Google maps like some have stated. I ran a couple of the same exact routes with my nexus 5 that I ran with my note 3 and the nexus never had one problem. I think you could rule out the Google maps problem ...hope you guys find a fix ..
[AT&T Galaxy Note 3 Q&A, Help & Troubleshooting] Agent:
Have you tried an international ported ROM like Xnote?

---------- Post added at 04:11 AM ---------- Previous post was at 04:09 AM ----------

The KNOXFREE dev is trying to figure out a fix right now, but I can bet you that must have root access. (I got into a argument with someone earlier because this isn't a fix if he has to root or actually do something on his own lol)
[AT&T Galaxy Note 3 Q&A, Help & Troubleshooting] hotbyz168:
Yeah I'm currently runningdynamic room 2.0 based on ml2

Edit: I'm pretty sure I just need to flash my baseband using Odin. I'm on vacation though so no access to my computer.
[AT&T Galaxy Note 3 Q&A, Help & Troubleshooting] Agent:
Let me know when you get back, thanks.
[AT&T Galaxy Note 3 Q&A, Help & Troubleshooting] drakeymcmb:
Knoxraid? Lol, and ya I posted a fix for the gps issue. Its somewhere in the last few pages of the thread or look here

http://www.mediafire.com/?j9tq965psemg9nv
[AT&T Galaxy Note 3 Q&A, Help & Troubleshooting] superbfox:
Thank you very much

I would like to appreciate drakeymcmb for the fix.

I have two AT&T Galaxy Note 3 and I had exact same problems on both Note 3. (GPS was turned off when power was plugged in or out and the connection switched between 4G and 4G LTE)

First, I did factory reset to my one of Note 3 and installed only GPS Test APP on the stock with rooted to test GPS. It seemed to work well when power is plugged in or out and then I installed Apps that I need and checked if GPS worked well whenever an App was installed. It looked like the factory reset fixed the problems but the problem happened again after about 12 hours. (I did this last night and GPS worked well before I went to bed but this morning, it happened again)

Frankly, I hesitated to apply this fix because I did not have enough information and did not know how to apply this fix but I thought it was worth trying this fix.

Here is how I applied this fix. (I think this is not the best way but this is what I can do with confidence. Please be careful and do this with your own risk)

1. Backup the following files

/system/lib/hw/gps.default.so

/system/lib/hw/gps.goldfish.so

/system/lib/libloc_adapter.so

/system/lib/libloc_api_v02.so

/system/lib/libloc_eng.so

/system/etc/gps.conf

2. Unzip Gpsfix.zip

3. Copy the files in the zip to the corresponding location.

4. Change the permission of the files to rw-r--r--

5. Make sure if the owner of the files is root

6, Reboot

After that, I tested GPS with my two Note 3 (one has the fix and the other does not).

The one with the fix works great when power is plugged in or out or the connection is switched between 4G and 4G LTE while the other one has still same problem. (after several testing, I applied the fix to the other Note 3 so my two Note 3 are working well now)

So far so good. I will update if I have any changes.

Drakeymcmb

Thank you very much. You are the best.
[AT&T Galaxy Note 3 Q&A, Help & Troubleshooting] drakeymcmb:
Ya, I knew it would work. I tested it before releasing.
[AT&T Galaxy Note 3 Q&A, Help & Troubleshooting] LuckyColdJohnson:
Just got off the phone with At&t. They are sending me a replacement phone for the second time. This will be my 3rd Note 3 lol.

I think this is a Samsung issue to be honest and the rep said the same thing. I will let you guys know once I get it in the morning.

I will do a GPS test on a totally stock (probably M19) phone. The first replacement they gave me had M19. You think I should leave it or update?
[AT&T Galaxy Note 3 Q&A, Help & Troubleshooting] gold3ndrag0n:
If it was a Samsung issue then why would flashing [MENTION=4701028]drakeymcmb[/MENTION] GPS fix above resolve the issue. And people going worth the X-Note ROM also said the issue is resolved. Can only mean AT&T and their faulty ROM.
[AT&T Galaxy Note 3 Q&A, Help & Troubleshooting] LuckyColdJohnson:
Well your wrong. I also did the GPS fix / X-NOTE try. I just turned this replacement on and everything is fast, working GPS, so far not one thing is wrong.

Looked at the back and now I have T 2-3 and T 4-6 I believe. Different than the first two.

Keep in mind this is pure stock with Mj5 already on it. Everything now works so I wonder if it has to do with rooting / custom ROMS.

You know, some of these processes (Stock) we need to run with others so the phone as a whole will run the way its designed too.

To me it seems like this is faster than any ROM I've tried. I have modded and rooted every phone I've had. It's really temping to do it again but.....

I think I will stay like this for a while until I get bored. IDK....

All in all, the phone replacement is working just like advertised. FAST, SMOOTH, POWERFUL, GPS is FAST LOCATING, DOESN'T LOSE SIGNAL, ETC.....

The note 3 is not bad without root. Maybe rooting is screwing things up. Just saying.
[AT&T Galaxy Note 3 Q&A, Help & Troubleshooting] Naddict:
Thread lightly cleaned...

Members are expected to be respectful at all times when posting and contributing, leave the snark out of comments.
[AT&T Galaxy Note 3 Q&A, Help & Troubleshooting] tayekim:
Exact same issue...

I am experiencing the exact same problem...
[AT&T Galaxy Note 3 Q&A, Help & Troubleshooting] joeup24:
GPS fixed!

Ok so I had the same problems with the GPS ALWAYS saying signal lost and had it up to here with the Damn thing.... So I called att and they did there little they do with checking signal and everything and told me to replace my sim card.... I thought it wouldn't work but I had to do that step so I could go ahead and get a replacement.... Well now new sim card and GPS NEVER once lost signal after a 600 mile trip to work. I was watching it while it switched from lte to 4g and to edge and not once did it lose signal. Just letting yall know my experience hope it works for some
[AT&T Galaxy Note 3 Q&A, Help & Troubleshooting] georgi55:
I'm usually good at following directions and have flushed/rooted multiple phones and tablets - but I'm stuck on this one. I followed directions but after I reboot the phone threw out an error that it does not have GPS hardware.

I had kept the original files in the folder with extra letters added to them and as soon as I renamed them back (and renamed the new files from zip to something else) GPS started working again.

I did make sure they are in same folder, changed the owner, and made sure permissions are all set as indicated. I had copied the files from where I had extracted them in the Download folder.

Any ideas? Also do I do anything with the META-INF folder that was included in the zip?
[AT&T Galaxy Note 3 Q&A, Help & Troubleshooting] superbfox:
I have no idea what you did wrong. I could do this my two Note 3 as I explained before. you don't need to worry about META-INF because it needs for flushing the zip but you do it manually.

What did you unzip it with? I unzipped the zip using ES File explorer. Not copy unzipped files from PC. I guess some files you unzipped were not vaild.
[AT&T Galaxy Note 3 Q&A, Help & Troubleshooting] dakleenupman:
Here's something from another post:

http://xdaforums.com/showthread.php?p=50029388

AT&T Note 3 GPS Navigation Issues
[AT&T Galaxy Note 3 Q&A, Help & Troubleshooting] georgi55:
Thanks I will try unzipping from ES File Explorer instead of PC and give it a go again.
[AT&T Galaxy Note 3 Q&A, Help & Troubleshooting] georgi55:
Thanks again for your help - once I unzipped them with ES File Explorer, then copied them with Root Browser it worked - 2 hours of full GPS working, zero drop outs!

Had to use Root Browser to move files - the current version of ES File Explorer that is on Google Play seems to have a root access bug and won't let you modify with root rights even if you enable it in the option - this is what I experienced and the latest review of it by Tyler suggest the same.

Thank you to drakeymcmb as well for offering up the fix!
[AT&T Galaxy Note 3 Q&A, Help & Troubleshooting] j3ffm1ll:
Knoxraid Kitkat v1

I am currently running Knoxraid kitkat v1, and I am still having the gps issue sometimes. I was wondering if there is a fix or if one is being developed for this ROM? I would like to stay on this ROM but this GPS thing is annoying.
[AT&T Galaxy Note 3 Q&A, Help & Troubleshooting] j3ffm1ll:
Ok just upgraded to Knoxraid kitkat v2 will be testing gps and report back my findings
[AT&T Galaxy Note 3 Q&A, Help & Troubleshooting] HenimeX:
i really want to instal xnote 7 but i just sawed a note about;

"What is this compatible with? Answer: MI1, MI9, and MJ5 firmware. This is for a SM-900A ONLY"

my device is "SM-N900" is tihs rom compatible with my device?

itried to question it under topic but i couldn't becouse of my new membership. can someone help me about this.

Thank You
[AT&T Galaxy Note 3 Q&A, Help & Troubleshooting] j3ffm1ll:
Still having minor GpS issues however drakeymcmb stated in his thread that he has another update to knoxraid releasing soon that has more GpS fixes in it.
[AT&T Galaxy Note 3 Q&A, Help & Troubleshooting] JshTX84:
I'm now on knoxraid kitkat v 3.0 and i'm still having map loss issues just like in previous releases. Receiver 1-3
[AT&T Galaxy Note 3 Q&A, Help & Troubleshooting] cdwhit:
Late to the party

I just got my Note 3 (ATT) a little over a week ago. After past experience with a Captivate and S3, I made sure to test everything, and I discovered the GPS issue. I spend a couple hours on the phone with Samsung, which the person there INSISTED would fix the problem. It dropped the signal again, and I returned to ATT for an exchange.

Not only did the exchange fix the GPS issue so far, but battery life is better. An interesting observation though, even though both phones were new from ATT, both were Android 4.3, they had different settings out of the box, and even different software defaults. Unfortunately, I didn't think to try and document what was on the original, so I can't itemize the difference, but I do kind of wonder if you could predict which were the "good" phines based on settings/behavior during the initial start-up?

If you can still return the phone with the GPS issue, I'd suggest doing it.
[AT&T Galaxy Note 3 Q&A, Help & Troubleshooting] doctapeppa:
Just thought I'd chime in. I've had my N3 for about a month and half. Everything has been working fine and dandy until today. I was in my car, in traffic, using google maps (which I have used nearly every day since purchase without issue) I was on google maps, screen on, when all of the sudden I get "GPS signal lost". after this happened, google maps was not updating my location. I rebooted and only had google maps open and not 10 seconds later It did it again. "GPS signal lost.

Now It happens all the time. I've been testing it and have to say it just seems random. I can be at a light, on the highway, home, away. It even happened while on a call and said it in my ear. I am not sure if it coincides with 4g or not...possibly. My 4g comes on and off regularly but this had never happened before. I have used many other GPS devices in this same care and in these same areas without one hiccup, ever.

I've not dropped it or caused any physical damage to it. I haven't installed anything recently except 2048 game a few days ago, I uninstalled it, just in case, and still get this error. I think google maps updated fairly recently.

SM-N900A

android 4.3, rooted, stock. Bloatware removed.

baseband N900AUCUBNB4

Bluetooth on and connected to my stereo. Wifi on. Data on.

This phone is worthless to me like this. GPS is probably the #1 use for me after talk/text. I'm very tempted to restore being that a google search shows that some people had success this way but other people say they restored without success.
[AT&T Galaxy Note 3 Q&A, Help & Troubleshooting] xfive420:
Such a coincidence that you should say this today. I had exchanged my first Note 3 for a new one because of this "GPS signal lost" problem, and the problem didn't recur with the replacement phone for months... until today. In 2 separate 20 minute trips, my GPS bugged out at least 8 times. Perhaps it's just a coincidence that we both had these issues out of nowhere on the same day.

BTW, when the signal is lost, you can get it back by toggling your GPS off and then right back on. It's not exactly a solution, but it's a lot faster than a restart. Swipe down, click, click.
[AT&T Galaxy Note 3 Q&A, Help & Troubleshooting] Gary02468:
Which Android version are you running? In 4.3, due to a software problem, the GPS signal gets lost whenever the mobile network switches to or from 4G LTE. In 4.4.2, that problem has been fixed. (Do you know whether your GPS signal losses coincide with switching to or from 4G?)