I9505 Stock MH8, No GPS lock? - Galaxy S 4 Q&A, Help & Troubleshooting

If I use just the Sats can't get a lock.
Running GPS toolbox shows 24 sats but I can only ever get a lock on a single sat. My i9300 shows 16 sats locked on 12 in same app.
Left i9505 with app running overnight on window no lock.
It looks like either the signal strength is too low or it 'locks' on one sat then can't move onto next.
Tried resets and reflash no joy.
All I get is this.
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Ideas?
Sent from Stock I9505 running 4.2.2

Download GPS Test from Play Store, go to settings and update AGPS. Or try clearing it first and rebooting the phone.

robogo1982 said:
Download GPS Test from Play Store, go to settings and update AGPS. Or try clearing it first and rebooting the phone.
Click to expand...
Click to collapse
Thanks for the idea but I've already tried GPS Test and it never finds a sat and as I've done multiple reflashes and resets I've probably done at least half a dozen reboots.
To be honest I find GPS Toolbox better then GPS test anyway as you get a lot more info on what sats are live.

Yes, but did you try updating AGPS data? If you can do it from GPS Toolbox, do it. As long as you try that too. Did you also flash the MH8 modem with the ROM?

robogo1982 said:
Yes, but did you try updating AGPS data? If you can do it from GPS Toolbox, do it. As long as you try that too. Did you also flash the MH8 modem with the ROM?
Click to expand...
Click to collapse
Yes I've updated AGPS data, there's a facility to do it within GPS toolbox and you can see in the piccy above it's 0 (zero) hours since the last update i.e. It was updated within the last hour.
The MH8 flash was done by Sammie OTA, the Baseband is MH8.

Weird. Tried reflashing the modem with Odin?
Other than that I'd try a factory reset or a completely new flash of MH8. No other ideas, sadly.

As I said in the first post I've tried multiple reflashes, does anyone know of there's a service menu option such as hardware default reset?
The only thing I can think of is the modem (which I think the GPS interfaces through?) isn't getting reset properly and that'll fix it, else it's off for a hardware check.
Sent from Stock I9505 running 4.2.2

pinsb said:
As I said in the first post I've tried multiple reflashes, does anyone know of there's a service menu option such as hardware default reset?
The only thing I can think of is the modem (which I think the GPS interfaces through?) isn't getting reset properly and that'll fix it, else it's off for a hardware check.
Sent from Stock I9505 running 4.2.2
Click to expand...
Click to collapse
Could you solve it?

Same problem
I'm using different modem but I have the same problem.
I'm using Gps Data to show satellites. At first it shows around 20 satellites after that the amount starts to drop to 9-11 satellites.
It can always get one fix for a moment to some satellite (usually 71, 72 what I have been following today) strength is 40-41 but it loses it in 5-10 seconds. At the same time it also always shows strength 30 to three other satellites.
After it has that one fix and 3 others with signal no fix it drops them all and looks for new ones and does the same thing after a while: one fix again to 7X number and 3 signals no fix.
Interestingly enough the one fix it gets seems to be russian satellite and the 3 others are american... still, I don't think that's the problem or could it be?
Before I had problems with gps and 3g too (only got 2g) so I sent the phone to repairs. Now 3g works and the gps signal strength got to that 30-40 to at least some satellites. Before warranty repair it was around 2-4 satellites and signal was only 3-10 and never fix.
They told me they had changed the motherboard of the phone other than that I don't know what was the problem since they spoke only Chinese. I'm in Shanghai btw... so 3g got fixed but gps still no lock.
After repair I have tried 3 different modems and unrooted stocks. Same problem with all modems and firmwares, same satellites, same strengths.
My friends Sgs 3 and Sgs 4 have no problems. I also didn't have any problem at the first.
Did you get your phone fixed somehow or was there HW repair ?

Related

GPS issue

I have my S3 since Saturday. Sunday was actually the first day to test it. The only thing I did Saturday was to update it, OTA.
Of course, I took it for a drive several hundred miles. Everything looked good. It fixes the location very fast and accurate... many times better than my previous S2... however, at one point it did lost the location....... after a reboot it started working fine again and was able to complete my drive very happy about it.
Unfortunately, I have to say, the serious problems started Monday.
My S3 is loosing the satellites constantly. A reboot fixes the problem, but again, after about 10 minutes, it looses the satellites. No matter what I am running, waze, Google maps, GPS Test Pro etc., it is all the same: it sees a big number of satellites, but it doesn't lock on them... even if the signal strength is considerable good with some of them (that could turn them to green if in GPS Test Pro).
I don't see any reason why it would loose the lock of the satellites.
Getting tired rebooting my S3, I tried a couple of tools from the market: GPSfix and GPSaids... although I am not sure about the first one, even that it helped, the later one helps indeed. After running it and return to my navigation program the S3 starts locking the satellites again and fast and very price... for another 10 minutes.
Not sure what to do... guess my next step is to root my device and try FasterFix and other tools that requires root... or even try a custom rom and different rom/modem.
Any idees, suggestions?
The phone is purchased from Vodafone Romania.
AP: I9300BUALF1
CP: I9300BULF1
CSC: I9300VFGALF1
Thanks in advance.
To be on the safe side I think you should return it, otherwise flash xxalf6 rom and check if you still have the same problem
Sent from my GT-I9300 using Tapatalk 2
how about trying to calibrate the compass first
http://jjpda.blogspot.sg/2011/10/how-to-calibrate-your-compass.html
Another thing I noticed:
for example, at home, with or without wifi enabled, I let the GPS on for more than an hour and haven't noticed it loosing the lock on the satellites.
I guess it happens only when my position changes (driving).
So, am I the only one with this strange behavior of the S3?
It might be as well, as you suggest, the firmware/modem branded version from Vodafone Romania.
I will certainly contact Samsung and ask them about it.
the_slasher said:
how about trying to calibrate the compass first
http://jjpda.blogspot.sg/2011/10/how-to-calibrate-your-compass.html
Click to expand...
Click to collapse
I will give it a try...
I am on Omega V6, and the GPS literally saved my friends and I over this weekend in the desert with almost no gas and no reception.
THANK YOU SGS3!
I had to rotate it a lot to get to 3 where the line pointing to North (I guess) was blue.
LE: Now I will give it a drive test to tell if it helps.
SlimJ87D said:
I am on Omega V6, and the GPS literally saved my friends and I over this weekend in the desert with almost no gas and no reception.
THANK YOU SGS3!
Click to expand...
Click to collapse
Doesn't really helps me... how about when you were on stock rom?
GPS' performance was one of the main reasons I switched from S2 to S3... being able to point me down in areas where's no GSM network and no roads.
I am using the navigation regularly for a 2 hours car trip. I haven't noticed any lost position, Crossing the country side with about 30mn without gsm connection.
Sent from my GT-I9300 using xda premium
This is what it was looking like yestarday...
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Sent from my GT-I9300 using xda premium
spookyx said:
This is what it was looking like yestarday...View attachment 1158790
Sent from my GT-I9300 using xda premium
Click to expand...
Click to collapse
In the app, hit menu then settings and clear agps the update agps. Used to help me on the S2, especially when far from home or overseas. Even though it shouldn't need it bit try just in case.
Sent from my GT-I9300 using xda premium
I have a strange problem:
I'm on omega 6.0 and my GPS fixes 14-18sats in about 5-10 seconds. sometimes ti finds satellites and just don't fix them without data connection or Wifi. Tried both LF2 and LF5 modems. cleaning cache and dalvik cache helped. but I'm aware it will happen again
any ideas? I'm using GPS status and toolbox to monitor GPS
I have calibrated the magnetic sensor. From 1 went to 2 and then to 3. From 2 to 3 had to spin the phone A LOT.
Anyway, left the house with GPS on. The GPS stayed locked for about 2 hours.
Later on the day, the GPS started to lose the lock again.
I checked again with the magnetic sensor and it was down to 1 again. Brought it quickly to 2 again. GPS started working.
Minutes later, GPS lock lost again. Using GPS Test Pro (clear AGPS) or GPS aids or other similar application... or even doing the magnetic (re)calibration offers only a TEMPORARILY solution.
Beside trying a different/newer modem/rom, does anyone have a permanent solution to this stock UNrooted rom?
Thanks.
Anyone else from Vodafone Romania experience this issue as well?
I am coming to the conclusion that the magnetic sensor is broken (keeps decalibrating) and that affects seriously fixing the location.

[Q] Is there a way to fix my GPS?

Hello all!
My Nexus 4's GPS is simply not locking. Is this a problem for anyone else? Is there Amy way to fix this?
Yes, I'm indoors, but so is my sprint s3 and it gets an instant and accurate lock. I tried a hard reset, but that didn't work.
Is anyone experiencing any GPS problems?
nope, GPS works out of the box here. have you tried testing with GPS test?
Go outside
ugotproblemz said:
nope, GPS works out of the box here. have you tried testing with GPS test?
Click to expand...
Click to collapse
Yeah and GPS Status.
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nope, GPS locks in instantly for me. I'm on tmobile,
albundy2010 said:
Go outside
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Click to collapse
Outside it locks in like a minute or two, but I shouldn't HAVE to Go out to get a fix. My s3 essentially locks in less than 10 seconds. The s3 sees 8 more satellites. I might be being too picky.
n1ggyn1ce said:
nope, GPS locks in instantly for me. I'm on tmobile,
Click to expand...
Click to collapse
I'm on solavei, so Id think my results should be similar to yours.
andddlay said:
Outside it locks in like a minute or two, but I shouldn't HAVE to Go out to get a fix. My s3 essentially locks in less than 10 seconds. The s3 sees 8 more satellites. I might be being too picky.
Click to expand...
Click to collapse
In order for gps to work properly it needs to be able to see the satellites. Which means a clear view of the sky / outside
That is the reason why GPS signal is shaky in large cities and doesn't work in tunnels period. Stating that your GPS is broken because it doesn't get a lock inside is just frankly silly.
albundy2010 said:
In order for gps to work properly it needs to be able to see the satellites. Which means a clear view of the sky / outside
That is the reason why GPS signal is shaky in large cities and doesn't work in tunnels period. Stating that your GPS is broken because it doesn't get a lock inside is just frankly silly.
Click to expand...
Click to collapse
I would agree that it sounds silly but I also understand and agree with his point. My EVO LTE on Sprint locks indoors in NYC within a matter of seconds but my Nexus 4 on T-Mobile pre-paid never locks in exactly the same spot. Outside in the open it is fine and locks quickly so I can't say the GPS is broken but it's certainly not as strong as my EVO LTE.
same here. on T-Mobile. Verizon s3 gets an instant and accurate lock
My GPS locks very quickly, but after about 30 minutes in Navigation, it drops, and I have to turn off GPS (or exit and restart the Nav app), and turn it back on to reacquire satellite lock.
Sounds like you need a replacement, I'm blown away by how fast my N4 locks especially compared to my sensation.
threeclaws said:
Sounds like you need a replacement, I'm blown away by how fast my N4 locks especially compared to my sensation.
Click to expand...
Click to collapse
Lol sry super late to respond. When y'all say you get an instant lock, do you mean as soon as you open up maps it find you, or does it find you like 15 seconds later? Navigation wasn't as smooth as I had hoped. Yesterday when using it it lagged behind throughout the whole trip... I'd imagine if I sent the device in to Google it would take foooorever.
I'm also experiencing slow locks.
Sent from my Nexus 4 using xda premium

[Q] GPS takes forever to lock

I am on stock 4.2.2. I can see satellite fix but is still searching for location.
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Perhaps I need to modify the gps.config file in /etc?
Sent from Mako
It seems this happen only at times. When is working, it's brilliant! I'm not sure if it's caused by gps status....
Sent from Mako
Do you ever experience any difficulties when you actually need to use gps functionality, such as when driving?
I used to experience the same on my Samsung Galaxy S. While standing still it would take forever to lock, but every time I needed GPS to navigate, it would work just fine. It used to be like that on my N4 as well. Since flashing a different kernel though, acquiring a lock takes about 5 seconds. That's about 10 less than it used to take, and I'm holding a kernel reflash responsible for that
Mine locks in about 3 seconds, bone stock. In my house.
GPS locking can be many things. In the past (my HTC Sensation) this occured most times when using a kernel other than stock. Crypted, a member here did a LOT of testing and different things to get agps locks. You can use his files if need be. But remember, that every time you flash a new rom, that gps.conf file will be replaced with whatever the Rom is bundled with.
EDIT: Off topic...post #666 ooooooooooooooooooo lol
Maybe I should update my gps.config file. Anybody can guide me?
Update :took a look at my file, can't find any ntp server in it. Besides, the sensor usage for GPS is disable ?
Sent from Mako
For the sake of testing , tested my gps indoor with WIFI connected, got a lock in 30 secs. Good result. Sometimes when I'm driving, it doesn't get a lock even after >100 secs(no latest agps as I don't have data plan) . Baffles me
Sent from Mako
I had a similar issue with mine. Flashed so many Roms and kernels that didn't help. I'm on maggodins ROM and Franco now which has been perfect. Also try getting a fix with GPS test, set it to keep screen on and let it sit for ten minutes. Apparently it let's it gather agps and satellite data for your region so future locks are better.
Sent from my Nexus 4 using Tapatalk 2
I'll try
timhl7 said:
I had a similar issue with mine. Flashed so many Roms and kernels that didn't help. I'm on maggodins ROM and Franco now which has been perfect. Also try getting a fix with GPS test, set it to keep screen on and let it sit for ten minutes. Apparently it let's it gather agps and satellite data for your region so future locks are better.
Sent from my Nexus 4 using Tapatalk 2
Click to expand...
Click to collapse
Sent from Mako

GPS lock on stock

I got a new note 3 a month ago. Finally Tested out the gps when I went on vacation. The gps could not always lock. It was loose GPS signal every 10 min also. It would tell me to u turn and get off the highway routinely because it thought I was on the wrong street or going backwards. Really frustrating when going long distance. Since it's stock is there a fix. I've tried a few apps. GPS fix, gps status, etc. any options out their that might actually work.
When using the gps apps are you getting locks? How many satellites are you seeing?
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have you tried clearing agps?
I turned on the GPS status app. I can get a lock on two out if 19 after 2 min. Waited 5 and it didn't improve. The maps app locked good on my position however.
jlear3 said:
When using the gps apps are you getting locks? How many satellites are you seeing?
have you tried clearing agps?
Click to expand...
Click to collapse
Did you try to clear the agps data? May help
I cleared it and tested. Then downloaded and tested. Reset all setting and tested. Reset phone and tested. Still only to get 2 sats but not a full lock.
Any other suggestions.
jlear3 said:
Did you try to clear the agps data? May help
Click to expand...
Click to collapse
cterrell16 said:
The gps could not always lock. It was loose GPS signal every 10 min also. It would tell me to u turn and get off the highway routinely because it thought I was on the wrong street or going backwards.
Click to expand...
Click to collapse
I have the exact same symptoms. When setting up navigation of a trip it will take forever to lock on and after it does it is very slow to update position. Many of the updates to my position are in correct putting me just off the highway on a side street. Sometimes it will have me driving reverse to the direction of my arrow.
I actually uninstalled my weather app and the issue was corrected to a degree. It's not perfect but it does help.
QUOTE=thefugugitive87;49634961]I have the exact same symptoms. When setting up navigation of a trip it will take forever to lock on and after it does it is very slow to update position. Many of the updates to my position are in correct putting me just off the highway on a side street. Sometimes it will have me driving reverse to the direction of my arrow.[/QUOTE]

Moto G4 plus stock naugat - GPS not acquiring satellite.

recently I have noticed that the GPS is not functioning, it is not acquiring the satellite.I have tried all the usual troubleshooting like reset etc.
Does anyone have a solution to this issue?
soorajnair said:
recently I have noticed that the GPS is not functioning, it is not acquiring the satellite.I have tried all the usual troubleshooting like reset etc.
Does anyone have a solution to this issue?
Click to expand...
Click to collapse
Can you please provide the system screenshot with your security patch number, they baseband version and the rom version?
What reset did you do? Factory reset? Have you an unlocked bootloader and twrp or not?
I have Hard reset and also tried apps like GPS status to resolve this issue.
this phone is not rooted/bootloader unlocked its stock.
following is the security patch number, they baseband version and the rom version details.
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drive.google.com/open?id=1SIsKQIykwO4GALAUL9rZDq6QOpUeYlx3
strongst said:
Can you please provide the system screenshot with your security patch number, they baseband version and the rom version?
What reset did you do? Factory reset? Have you an unlocked bootloader and twrp or not?
Click to expand...
Click to collapse
I have Hard reset and also tried apps like GPS status to resolve this issue.
this phone is not rooted/bootloader unlocked its stock.
following is the security patch number, they baseband version and the rom version details.
Screenshot - About phone
screenshot is also at the link:
drive.google.com/open?id=1SIsKQIykwO4GALAUL9rZDq6QOpUeYlx3
Can anyone help with this plz?
soorajnair said:
Can anyone help with this plz?
Click to expand...
Click to collapse
Do you have Location Accuracy set to High, rather than Battery Saving?
Which apps have you tried to confirm your GPS is not working, and what results do you get from these apps? You may wish to be outside to get the best signal from the GPS satelites.
echo92 said:
Do you have Location Accuracy set to High, rather than Battery Saving?
Which apps have you tried to confirm your GPS is not working, and what results do you get from these apps? You may wish to be outside to get the best signal from the GPS satelites.
Click to expand...
Click to collapse
Yes it's in high accuracy, even tried switching different location accuracy but no luck.I tried Google maps ,it show location inaccurate and then jumps around.Then I used GPS status app ,I found that it's able to search and list satellites but it's not locking to any satellites.
I even test with the builtin app called device help, it also showed tat GPS is not locking to any satellite.
soorajnair said:
Yes it's in high accuracy, even tried switching different location accuracy but no luck.I tried Google maps ,it show location inaccurate and then jumps around.Then I used GPS status app ,I found that it's able to search and list satellites but it's not locking to any satellites.
I even test with the builtin app called device help, it also showed tat GPS is not locking to any satellite.
Click to expand...
Click to collapse
Is this behaviour the same outdoors, or at least with a clear line of sight to the sky? I would like to rule out local interference if we can (e.g. tall buildings that may interfere with receiving the GPS signal). Where are you (generally, no need for specifics) and do other GPS based devices lock on okay? Did this loss of GPS happen randomly?
Can you check with the Satellite Check - GPS Status app and show the satellite graph or satellite positions graph, please? They should not show your actual location, please check before posting.
As you've done a hard reset, you could look into re-flashing the stock ROM, see if that repairs anything: https://forum.xda-developers.com/moto-g4-plus/how-to/stock-rom-npjs25-93-14-4-march-1-t3608138
If that doesn't, we may have to consider a service repair, unless someone has an idea?
I am on open terrace,this is happening freaqntly have done hard reset.due this I got lost twice during a long bike ride.i thinking of editing gpS.config file. could u just??
I did reset Wifi, network connection, full reset, same result, can't catch the GPS.
Opened the back and inner cover, pull both GPS antenna's pin, then put the inner cover again, done, GPS signal is back.
G4 plus is an old phone, the GPS pin (on board) loose the contact with the GPS copper pad (on the inner cover).

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