GPS Issues - can't get location, but GPS Status finds and fixes many satellites?! - Galaxy Note 3 Q&A, Help & Troubleshooting

No clue whats goin on...
I wanna use GPS and it keeps searching for ages without getting a fix.
So I ran GPS Status app and it shows many satellites - at one point I had fix to 8 or 9 Satellites?!
3 or 4 should be enough for a location, I don't understand why the GPS keeps searching without getting a fix when I already discovered 8 satellites?
Anyone have an idea?
My system is heavily modded (debloated hardcore) but I'm pretty sure thats not the real reason. Using xprivacy and afwall (but allowing the Android System and the apps I want to be able to use GPS the location and also internet access...) - this setup worked fine in the past on my N7000 without any gps problems. (even removed the NetworkLocation.apk since I dont want to use network location anyway and its not necessary for gps either - tested that already on my old N7000)
Satellites are found, but no location?! Really weird....

zroice said:
No clue whats goin on...
I wanna use GPS and it keeps searching for ages without getting a fix.
So I ran GPS Status app and it shows many satellites - at one point I had fix to 8 or 9 Satellites?!
3 or 4 should be enough for a location, I don't understand why the GPS keeps searching without getting a fix when I already discovered 8 satellites?
Anyone have an idea?
My system is heavily modded (debloated hardcore) but I'm pretty sure thats not the real reason. Using xprivacy and afwall (but allowing the Android System and the apps I want to be able to use GPS the location and also internet access...) - this setup worked fine in the past on my N7000 without any gps problems. (even removed the NetworkLocation.apk since I dont want to use network location anyway and its not necessary for gps either - tested that already on my old N7000)
Satellites are found, but no location?! Really weird....
Click to expand...
Click to collapse
I think I have posted a similar story with my tests just today in another thread - does it make any difference if you have your mobile (cellular) data started (and WiFi off)?
I suspect there is somewhere a more extensive configuration for the GPS circuit (maybe including something about whether to use Assisted GPS or not), but for the moment I did not have enough time to look for more details on this

Related

Xperia GPS malfunction

Hi
I wonder if someone has this same problem and know how to solve it...
Most of the times that i try to use tomtom or wayfinder, the gps can't get a fix, it locks on to the satelites with no problem, but only for 1/2 seconds, then loses the position and after some 10s it regains the position again for another 1/2s and loses it again...
The only i way can get the gps to function properly again is by turning the phone off, remove the battery and turn it back on. Then it works, but if i turn off tomtom and try to use wayfinder the problem returns, and sometimes also happens after i close tomtom and try to use it again later...
It's driving me nuts i did a hard reset and after instaling my programs the problem remains. It seems google maps works ok, tho i'm not sure as the program doesn't have the option to see to how many satelites it's locked on.
any ideas? I doubt it's from the programs i install cause the ones i use i dw them all from this forum...
Thanks
its probably your location, the satellites might not be abundant enough. GPS works fine for me, I'm using IGO8.
no, it's not that, cause when it happens i remove the battery and reinsert and turn on the phone again, and after doing that procedure the gps will lock with some 6/7 satellites and will not fail as long as i don't turn off the first program i try to use the gps with ...
If i use tomtom after doing that battery removal procedure, it will work flawlessly, if i turn off tomtom and use it right after, it still works ok, but, if i turn off tomtom and after i use wayfinder, or if i only use tomtom again after some hours, it will have that problem (and vice-versa), it does find the same satellites and gets the coordinates (in tomtom they get those blue level bars), but only for very brief moments every 10/15s which ofc makes it impossible to correctly use the navigation program
If the gps was broken or something it wouldn't work ok after i removed the battery... i guess i'll try another hard reset
Try to disable A-GPS.
possible corrupt quick gps file , run quick gps and downoad new file.
Hi,
If you have used Advanced Config and enabled A-GPS, disable it as it will cause issues with TomTom and other GPS navigation software.
Later...
hehe got it working now, i had tried that before, but seems i was using an older version of advanced config or something, i downloaded a new version, disabled a-gps and now the gps is working fine thanks for the help
Re elusivo
Elusivo, could post how you fixed your problem? Because I currently have the same problem, but no Idea how to fix it. You said something about using a new configuration with and old one? Can you please explain?
Search for the program 'Advanced Config' on the forum and install it and then run it. Go to the GPS section and if A-GPS is enabled disable it. A-GPS uses the phone masts to triangulate and get your position which causes havoc when you are trying to use the internal GPS
Thanks for that......Problem solved
hello
I do have the saame issue as you with my gps. I install Igo, tomtom, gps htc tools and gps skinner and it is always 20/30sec to get a fix but it loses it 1 sec after.
If I disable A-Gps, it will increase the time to fix satellites or is it just used for quiick gps to download ephemerids???.
I think we have to ask Customer support because it is unacceptable for such an ewxpensive phone to have to disable functionalities such as A-gps to get it to work
pyrofrag said:
If I disable A-Gps, it will increase the time to fix satellites or is it just used for quiick gps to download ephemerids???
Click to expand...
Click to collapse
A-GPS uses Cell Towers to guess where you are. It is not (on these phones anyway) linked to Quick GPS which is a lot better at getting you a fix on a cold start.
As others have mentioned for some reason with A-GPS enabled TomTom doesn't like it, and I don't know of any real reason to use it.
@artesea : I don't get why you said "I don't know of any real reason to use it".
Are you talking about Tomtom or about A-GPS function ??
Because if you are speaking about Tomtom, I do have similar problem with all software using GPS.
And if you disable A-GPS function you are going to have to wait may be 3 minutes or more to get a fix instead of 40seconds so I think this is a real reason to use it...
No I'm talking about A-GPS.
Have you tried a cold start using Quick GPS, I can get a location in under 30 seconds.
So I disable A-GPS and I got fix within 30/40 seconds and I never lost it.
I just think it is absolutely unbearable to have to disable A-GPS to get your GPS working properly. This mobile phone cost 700€
I just would like to know what is protocol version from people who can have A-GPS working properly.
Rom version : 1.02.933.3
Radio version : 52.43.25.24W
So you've gone from 20/30 seconds to get a fix but then it drops, to 30/40 seconds to get a fix and it work and you STILL have a problem???
Maybe there is a reason why A-GPS is disabled by default!
No when I disable A-GPS I don't have problem any more.
I just remembered that I may have enable A-GPS through Advanced Config.
Hard reset do not change this, I though it was a registry editor value but apparently it is more than that.
Anyway it is not Xperia X1 issue but Advanced Config compatibility with Xperia X1
having problems with gps now too :/ later it was working brilliant (fix in no time), but now, most of the time i dont even see any satellite...
but sometimes, especially after reset, it shows like 5-6 satellites, but cant get fix, after some time sats just disappear :X tried disabling/enabling a-gps, with/without quick gps file downloaded, still the same... and no answer anywhere...
i guess i'll have to use my warranty and get it serviced :/
edit: today reflashed radio one more time (as yesterday after like 5 radio flashes, i ended on the original version, not the newest one) and suddenly gps is working hope it lasts...

AGPS

I know this topic has been discussed previously, but I haven't been able to find the answer yet so here goes:
As I understand it, GPS is working in all/most sense and cm based builds however AGPS seems to be an issue all have in common. From what I understand AGPS is just a helper function for quicker GPS locking so even though AGPS isnt working, you should still be able to get a lock.
Now, since before we got nand based ROMs for HD2 I used haret to load android from my SD card. Back then I used GPS depended applications like c:geo for geocaching and car navigation progs, as well as progs for finding nearest resturant when I visit other cities/countries.
Been a while since I had the need for it, but recently with the nice weather geocaching for example have become an interest. What I see now is that none of the ginger/cm/non-sense builds I have tried have given me a GPS lock. I have tried the GPS fixes, flashed Norway.zip for tweaking my gps.conf, installed gps-status but no chance in getting a lock. and yes, I have been giving it quite some time, outdoors.
Anyone else having these problems? I see from screenshots on for example the HyperDroidCM7 ROM that you can get a lock, so its not a problem for everybody. Is my assumption on what AGPS is, correct? Any worarounds to get GPS functionality working? Strange to have these problems now, since it worked kinda well before
EDIT: tried now with [10.MAR.11][CWM] RAFDROID HD 4.0.2|Fastest Full DesHD|DATA2EXT|[Rafpigna 1.8 OC], still no lock
There's no driver support for AGPS, so the best we can do for now is to tweak our gps.conf and use gps status. If you can't get a lock at all, it could be a HW problem. If geocaching is a necessity for you, you could go back to WM and sd Android, use WM to grab AGPS data, then boot into Android.
Sent from my HTC HD2 using XDA App
I use that rom, but the 4.0 (really not much of a difference for me between the 4.0 and 4.0.2), and I always have a lock quickly.
1) Did you try installing the GPSFix.0.1 apk file and running it? that downloads a criticial file xtra.bin into your data folder.
Also try the 1.2 files and see if you have any luck, because I know in the 4.0 of Rafdroid, the gps works very well.
Same as Angeldeath, I use Rafdroid and it works ok.
Mine was faulty a couple of weeks ago and HTC warranty had to swap the board (and also did the screen, keys etc). In the end it would still lock but after a while it would freez or have no reception anymore.
But to be honest I don't like the GPS receiver at all in the HD2. There are numerous tests and other people to back me up on the tremendous jitter the receiver has which makes you jump all over the place.
A nice test is to place it in the car and switch on the cruiscontrol at 100km/h, or even worse at 180km/h. The thing will jump atleast 10% in speed.
When I need to drive or walk long trips I use my iBlue 747A+ 66 Ch Bluetooth GPS Logger which you can buy cheap on ebay.
That thing logs, is fast, deadly accurate and with the free 'bluetooth gps' on the market you can even use it on the HD2
huggs said:
There's no driver support for AGPS, so the best we can do for now is to tweak our gps.conf and use gps status. If you can't get a lock at all, it could be a HW problem. If geocaching is a necessity for you, you could go back to WM and sd Android, use WM to grab AGPS data, then boot into Android.
Sent from my HTC HD2 using XDA App
Click to expand...
Click to collapse
The AGPS thing on WM and then booting into Android is a myth, there's an extenvise work being done to make AGPS work on Android for our HD2s, but they have not managed to get it working yet.
Android on our HD2 simply doesnt have any commands to load AGPS, and the chip itself doesnt save any data. In the remote case it saved anything, there's nothing on the GPS Driver itself to read it
Quick tip to get your GPS to work:
Load Google Maps, let it try to get a lock, if after 1 or 2 mins it doesnt get any lock force close the app, turn off then back on the GPS and reload Google Maps. If you still cant get a lock, let it sit for at least 5 mins, then Force Close it again.
after that it should get you a lock in less than 10 secs.
Easiest way to FC it is enabling the "hold back to FC app" option on CM builds.

[Q] Anyone Elses GPS Aweful?

I have never had my GPS locate me via google maps. My Phone has no issues. Anyone else have GPS issues? any tips? Hopefully a software update fixes it? I have a friend who has the same issue.
[Should have read "awful", not aweful]
Nothing wrong with my gps. Have you upgraded to the latest firmware? Downloaded the A-GPS data (you can get this by using an app called GPS status)? Switch OFF wifi after you do, then leave it to get a full signal lock (takes up to 15minutes or so with a clear view of the sky).
toddmp said:
I have never had my GPS locate me via google maps. My Phone has no issues. Anyone else have GPS issues? any tips? Hopefully a software update fixes it? I have a friend who has the same issue.
[Should have read "awful", not aweful]
Click to expand...
Click to collapse
Make sure you are outside with a clear view of sky when you test. It can take any GPS up to 10 minutes to acquire the ephemeris information (satellite position at a certain time) and lock up. You phone cheats this by using the cellular network to provide a general location of where your are and therefore where to look for certain satellites.
thanks so much for the info guys. I had a feeling it had something to do with no cell phone band helping out. thanks!
GPS works fine here, as other have said the closer you are to the sky/window the better.
yeah..give your TF a few minutes to lock up sat positions (if you've never done this)..
this applies to most pure gps devices..cellphones can use cellular network signal to quickly locate your position but the data isn't really from gps itself.
http://forum.xda-developers.com/showthread.php?t=1088120
Hope this helps
Acid lestitious 2.0. Fugumod 2.4 800 mhz
jerrykur said:
Make sure you are outside with a clear view of sky when you test. It can take any GPS up to 10 minutes to acquire the ephemeris information (satellite position at a certain time) and lock up. You phone cheats this by using the cellular network to provide a general location of where your are and therefore where to look for certain satellites.
Click to expand...
Click to collapse
I wonder if it does the wifi cheat like maps for android phones, where it uses the known APs to determine location? I say that because when I first fired up my transformer yesterday, after connecting to wifi, I screwed around on maps and it found me inside my house in less than 30 seconds.
toddmp said:
I have never had my GPS locate me via google maps. My Phone has no issues. Anyone else have GPS issues? any tips? Hopefully a software update fixes it? I have a friend who has the same issue.
[Should have read "awful", not aweful]
Click to expand...
Click to collapse
its the reverse for me! in the same room of house i often cannot get a fix on my Optimus 2x. i use GPS Staus app. but i often get fix within 30secs. as a test i have both machines running the app next to each other and the transformer always gets regular fixes.
..... hmm just realised as i type this that i have a phone called optimus and tablet called transformer, and they both run android!!!
I get fixes with no wifi (ie: only GPS) within 30 seconds.
Quite the opposite, mine is extremely accurate. After it gets a fix on maps that little google person is standing right in my front yard in the satellite view! Better than my Droid!
Mine is almost instantaneous. Just tried it at home based on this thread and had a read in probably 5 seconds.
I have not been able to obtain a GPS lock until today when I set my location to use wireless networks. To me this is really stupid because the GPS shouldn't have to use any location settings to obtain a lock in my mind. That is if the GPS chip in the TF is a true GPS chip it should not to rely on a wifi signal to obtain a lock. If the GPS is turned on then it should lock.
I tested sygic gps navigation 11 and signal lock and quality was better than my galaxy s was pretty accurate
Sent from my Transformer TF101 using XDA Premium App
Works fine for me, apart from one minor detail. When I switch from Google Maps to another app, even for a few seconds, then the tablet has to get a lock all over again. There appears to be no way to set the GPS to keep a lock while Google Maps isn't the active program.
That, for me, makes Google Maps near-useless in a moving vehicle. Hopefully other third-party apps won't have this issue.
Google Maps is prety much useless on the Transformer for GPS navigation as a data connection is need. I have heard of people caching a route before hand but ..... Copilot Live 7 is out for android so that is one option. However if the GPS relies on a wifi signal in order to obtain a lock then it is about useless too.
toddmp said:
I have never had my GPS locate me via google maps. My Phone has no issues. Anyone else have GPS issues? any tips? Hopefully a software update fixes it? I have a friend who has the same issue.
[Should have read "awful", not aweful]
Click to expand...
Click to collapse
Gps works fine on mine....unlike my icons or Samsung...both returned
gps does use wifi to help gps locate, theres options to turn this off in settings, i went to pick up my dock today and couldn't get a gps lock while in the car with the transformer in my lap(gps status app showed 3 sats but none would lock) just lifting it up 12 inches closer to the windshield made 7 satellites pop up and instantly started getting locks
i think proximity to a window/line of sky is a big factor, and the transformer does have a true gps chip for those who seem to doubt it, also the navigation app keeps running in the background, its better to use that than google maps
No issues with gps here. The bastard finds me every time!
jadesse said:
However if the GPS relies on a wifi signal in order to obtain a lock then it is about useless too.
Click to expand...
Click to collapse
It doesn't rely on WiFi for a lock, it just uses it to allow a faster connection if you don't already have current ephemeris data downloaded. That's a limitation of all GPS receivers -- it takes a fair while to download the ephemeris data if you're out of date or have travelled a significant distance, and without it the device can't get a GPS fix.
You can think of the WiFi location system as analogous to a cellphone being able to use tower locations to help position itself while waiting for GPS ephemeris data.

[Q] GPS lock problem after kk

Seems to have GPS lock problems after kk update. Very difficult to get lock, and even when lock is eventually found, signal drops off easily. Anyone with this problem and have a solution for this?
koj012 said:
Seems to have GPS lock problems after kk update. Very difficult to get lock, and even when lock is eventually found, signal drops off easily. Anyone with this problem and have a solution for this?
Click to expand...
Click to collapse
To be honest I have seen that on my 4.3, where GPS lock takes more than twice longer (sometimes 5-10 times) than on my S3 - there is another thread on that somewhere. I was hoping 4.4 to come with improved firmware on that one, but apparently not so much
i'm not on kitkat, but i have problems with gps.
however, problems occurs only when recording a track with "my tracks" from google.. as navigation apps works fine, no issue with the signal. only my tracks is giving me huge gaps between checkpoints..
I dont have gps locking problem in kitkat, but with directions while navigation, gps marker points in opposite direction.
Sent from my SM-N900 using XDA Premium 4 mobile app
xclub_101 said:
To be honest I have seen that on my 4.3, where GPS lock takes more than twice longer (sometimes 5-10 times) than on my S3 - there is another thread on that somewhere. I was hoping 4.4 to come with improved firmware on that one, but apparently not so much
Click to expand...
Click to collapse
I have actually had the same problem, I thought it was only me. I ran stock Italy ROM 4.3, but don't see any improvement under 4.4.2 Poland. Even GPS Status app does not seem to help.
xclub_101 said:
To be honest I have seen that on my 4.3, where GPS lock takes more than twice longer (sometimes 5-10 times) than on my S3 - there is another thread on that somewhere. I was hoping 4.4 to come with improved firmware on that one, but apparently not so much
Click to expand...
Click to collapse
Interesting, my GPS lock in MapsWithMe Pro is almost instantaneous. About 5 seconds, usually. Unless I'm indoors, but you can't blame a phone for the laws of physics.
N9005 DBT 4.3 MK2/MJ7/MK2
If I use Google Maps, it will only triangulate if I turn on 'Use WiFi', 'Allow Google Location' and more of that rubbish, and even then it takes about 5 minutes to get a lock.
My advice: Stop using Google Maps.
ShadowLea said:
Interesting, my GPS lock in MapsWithMe Pro is almost instantaneous. About 5 seconds, usually. Unless I'm indoors, but you can't blame a phone for the laws of physics.
N9005 DBT 4.3 MK2/MJ7/MK2
If I use Google Maps, it will only triangulate if I turn on 'Use WiFi', 'Allow Google Location' and more of that rubbish, and even then it takes about 5 minutes to get a lock.
My advice: Stop using Google Maps.
Click to expand...
Click to collapse
1. I almost NEVER use Google Maps (OK, maybe for testing stuff) - and I can only wonder how you got that idea anyway Generally I am very happy with Sygic and I also use GPS Test for quick testing, also Accurate Compass (for very quickly calibrating the compass).
2. I have now tested MapsWithMe for like 2 days and I can guarantee you that the "instantaneous GPS lock" is COMPLETE bullsh*t - the program is only caching your last position (which generates huge problems if you move between locks), then it tries to use location data from your WiFi connection if that is active; if not it then tries to use some very basic and EXTREMELY INACCURATE positioning based on GSM cell towers (at which point the error displayed for my position was in the order of 1-2 km); during all those steps the program also fires-up the GPS - but it acquires the lock EXACTLY with the same speed (or complete lack thereof) as any other program attempting GPS lock
3. What still remains a little surprising for me is that sometimes (like well over 50% of time but NOT 100%) my GPS lock is MUCH, MUCH faster (in any program) if I have the Mobile Data connection active (which normally I rarely have); once I have the GPS lock I can then stop the Mobile Data connection and the lock remains perfectly good. EDIT: However the WiFi connection does NOT seem to make ANY difference on GPS lock whatsoever.
Isn't this basicly what AGPS should be doing. It requires a data connection to get the positioning fix faster than just using the GPS. once it gets the location it does not need the data that much. Except for google maps to download the map and navigation information, and this is why it needs a data connection all the time.
Sygic does not need a data connection for the map nor navigation. But, of course, having a data connection well get the fix faster.
y2kkingboy said:
Isn't this basicly what AGPS should be doing. It requires a data connection to get the positioning fix faster than just using the GPS. once it gets the location it does not need the data that much. Except for google maps to download the map and navigation information, and this is why it needs a data connection all the time.
Sygic does not need a data connection for the map nor navigation. But, of course, having a data connection well get the fix faster.
Click to expand...
Click to collapse
Oh, I had no surprise from the fact that aGPS can work
What I might have not mentioned above (fixed that now) was:
- a WiFi connection never improves things
- my old i9300 never needed the mobile data connection (or any kind of connection - that made basically no difference on it).
Those two seem to suggest that the Note3 "GPS driver stack" is worse than the old i9300. Also the fact that the mobile data connection does not improve things in 100% of the cases was IMHO interesting to note.
xclub_101 said:
1. I almost NEVER use Google Maps (OK, maybe for testing stuff) - and I can only wonder how you got that idea anyway Generally I am very happy with Sygic and I also use GPS Test for quick testing, also Accurate Compass (for very quickly calibrating the compass).
Click to expand...
Click to collapse
Ah, miscommunication. I did not mean you used Gmaps, I meant people in general. Gmaps is a nightmare, on 50Mbps LTE it still barely loads... Even on my homenetwork of 120Mbps WiFi it takes ages to load the map itself, surely the packages are not 1GB a piece?
2. I have now tested MapsWithMe for like 2 days and I can guarantee you that the "instantaneous GPS lock" is COMPLETE bullsh*t - the program is only caching your last position (which generates huge problems if you move between locks), then it tries to use location data from your WiFi connection if that is active; if not it then tries to use some very basic and EXTREMELY INACCURATE positioning based on GSM cell towers (at which point the error displayed for my position was in the order of 1-2 km); during all those steps the program also fires-up the GPS - but it acquires the lock EXACTLY with the same speed (or complete lack thereof) as any other program attempting GPS lock
Click to expand...
Click to collapse
I travel an average of 600KM a day.
Yes, MWM caches the last position. Which is hilarious from time to time, last week it thought I was still in Zurich when I was actually in Berlin. If you click the gps icon three times again, it repositions. Waiting for it to refix automatically takes ages.
I do not have WiFi on the Autobahn, (If only! ) and 70% of the journey I do not even have a mobile signal.
3. What still remains a little surprising for me is that sometimes (like well over 50% of time but NOT 100%) my GPS lock is MUCH, MUCH faster (in any program) if I have the Mobile Data connection active (which normally I rarely have); once I have the GPS lock I can then stop the Mobile Data connection and the lock remains perfectly good. EDIT: However the WiFi connection does NOT seem to make ANY difference on GPS lock whatsoever.
Click to expand...
Click to collapse
Nothing suprising about that. It uses the celltowers to triangulate by sending a data package, as opposed to attempting to connect to three satelites. If the network is fast enough (UMTS and above) it is much easier to get an accurate position. GPRS doesn't work all that well, nor does having 1 bar of signal on anything but LTE.
WiFi only helps if there are active points nearby (no need to connect to them, detecting them is sufficient) and you have 'use wireless networks' enabled under Location Settings.
I just tested: WiFi and Mobile Data off, No network signal, on the Fyra (Highspeed train. Or as much as the NS can manage, anyway.) from Schiphol Airport to Breda @160kph. Got a lock with SpeedView in 15 seconds, detected 24 sats. Not instantaneous, but then you can't ask for that at such speeds.
I do have to say, on the previous firmware it took much, much longer. About 1-2 minutes. And I tried a Dutch Note 3 yesterday, it required almosylt a minute on the same firnware version.
The weather also influences the signal, clear skies vastly improve things. As does solar activity. Last October you could wait an hour and not get a lock, due to a solarstorm causing too much magnetic interference in the atmosphere. Even my GPS locator itself took almost half an hour.
Send From My Samsung Galaxy Note 3 N9005 Using Tapatalk
ShadowLea said:
...
Nothing suprising about that. It uses the celltowers to triangulate by sending a data package, as opposed to attempting to connect to three satelites. If the network is fast enough (UMTS and above) it is much easier to get an accurate position. GPRS doesn't work all that well, nor does having 1 bar of signal on anything but LTE.
...
Click to expand...
Click to collapse
Actually original aGPS doesn't quite work that way at all - here is some info from some of the guys doing some of the Linux kernel drivers for aGPS devices (I can not guarantee it is 100% accurate but fits OK with other info that I have seen):
http://wiki.openmoko.org/wiki/Hardware:AGPS
And another thing to remember when testing GPS - after a successful GPS lock it is very likely that you will have a MUCH faster 2nd GPS lock for up to about 2 hours. So any such immediate 2nd lock should be see in the above context, also the lack of it
Least this problem isn't just me. Always used to track my rides with Endomondo without a hitch but I went out for the first time since KitKat and I couldn't tell you how many times it dropped out on that 2 hour ride ... but it was alot
Xalies said:
Least this problem isn't just me. Always used to track my rides with Endomondo without a hitch but I went out for the first time since KitKat and I couldn't tell you how many times it dropped out on that 2 hour ride ... but it was alot
Click to expand...
Click to collapse
Seems to be a very common problem. Read somewhere that this is a software issue and there is a fix if the phone is rooted by flashing a patch on it. But I'm not about to root my phone and lose the warranty. SAMSUNG please release an update quickly that fixes this problem.
koj012 said:
Seems to be a very common problem. Read somewhere that this is a software issue and there is a fix if the phone is rooted by flashing a patch on it. But I'm not about to root my phone and lose the warranty. SAMSUNG please release an update quickly that fixes this problem.
Click to expand...
Click to collapse
I am rooted (with knox 0x0 ) and I have looked into that patch - the one that I saw only sets a different AGPS server address and has minimal or no impact - actually I have a strong feeling that there is something in the CSC that overrides it, which explains why the AGPS server only improves things for me when connected only on mobile data and not over wifi.
IMHO that seems to be mostly a firmware / software driver issue - on my old S3 it looked like there was a lot more "caching" of the "GPS almanac" and slightly more pre-calculation of the "GPS ephemeris", possibly on the application CPU on the phone (which has humongous general-computing power compared with the CPU used inside the GPS circuit, which however is highly more specialized). On the Note 3 it seems to work in a "safer" approach in which older (than like 2 hours) GPS almanac data is considered inaccurate and so is the time otherwise used to pre-calculate GPS ephemeris (which time to be honest I have seen WILDLY inaccurate on some carriers, something like 27 seconds away; and of course if the time is not carrier-set the phone time can easily be tens of minutes away ).

GPS not found on navigation apps

So, i can get a fix for my location and the apps which need location (like uber) works fine. But when i need navigaton like Waze or GMaps it simply doesnt get a signal, it says locating forever. I already used GPS Status toolbox to clear AGPS data and didnt work (the App doesnt locate a signal also). i tried TopNTP and didnt work.
Ive been having this issue for a couple of months i think, that is BEFORE i unlocked and rooted my phone for the first time ever (using DU ROM latest version, rooted and unlocked using NRT). Since i basically didnt used navigation i cant say for sure. But i think it was around the same time i changed my display on a cell shop, so maybe its a hardware issue?
Thanks for the help

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