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Bloody crap gps.

Anybody else's gps connectivity generally crap? Seems to take for ever to connect then struggles to keep a connection.
Any known software conflicts? Running stock 2.35 rom.
No trees, walls, flying saucers in the way and Tried various gps info and fixer appear but to no avail.
Starting to really p*ss me off now.
Ta!
Sent from my HTC Desire S using XDA App

Yes, happens to me too. expecially when i go for walks. It takes reaally long time to load. Use Gpsfix ( Google it, Not able to post link because of post count) . It makes to process a lot faster.

khamoshpathak said:
Yes, happens to me too. expecially when i go for walks. It takes reaally long time to load. Use Gpsfix ( Google it, Not able to post link because of post count) . It makes to process a lot faster.
Click to expand...
Click to collapse
Be warned that gpsfix adds air push adverts to your phone. You may want to also instal add-on detector to find and remove them.
OP: Are you using a case? You may find that without root, you can't change the agps server location (mine was set to Asia by default) so it takes a while to lock pulling satellite info via 3g from the other side of the planet!
GPS Status and toolbox (which doesn't need root) forces an AGPS data download on startup and might help. Make sure 3g is on.
https://play.google.com/store/apps/details?id=com.eclipsim.gpsstatus2
Sent from my HTC Desire S using xda premium

Have observed that the GPS fix times are ROM dependent during my journey through many many excellent ROM's available for Desire S. I have even tried the AGPS fix which is recommended in the Dev section which was indeed helping to get a faster fix but the fix wasnt stable afterwards, especially while using apps like endomondo sports tracker..
The first ROM I saw that the GPS was excellent was in MIUI (GB) - without any AGPS or any other market apps or hacks I began to see a fix within 20 secs. Now, I'm presently on Reaper 2.2 (without AGPS fix) and the GPS continues to be excellent (<20 sec fixes).

I'm using ice cold sandwich with GPS+agps fix and find satellites in 3 seconds
Sent by my fingers to your head.

GPS fix issues can be as simple and HW-related as bad contact between the phone cover that includes GPS antenna (I guess it's the lower cover, but it might be an upper cover too), and the golden connector pin on the board. If you test all possible SW workarounds and they don't help - try to locate the antenna and make sure the connection is firm. Look for Vibrant GPS problems, they had such problem in the early batches.

For me the thread AGPS Patch Desire S 3.1 & 2.2 | GET BACK TO RAPID GPS LOCK, CAN LOCK ONTO MORE SATS helped a lot to get rapid GPS lock. Though, I'm not sure if root is needed for all installation methods. Good luck!
P.S.: The described patch is allready included in some custom roms like Endymion.

Jack_R1 said:
GPS fix issues can be as simple and HW-related as bad contact between the phone cover that includes GPS antenna (I guess it's the lower cover, but it might be an upper cover too), and the golden connector pin on the board. If you test all possible SW workarounds and they don't help - try to locate the antenna and make sure the connection is firm. Look for Vibrant GPS problems, they had such problem in the early batches.
Click to expand...
Click to collapse
The GPS and WiFi antennas are in the upper (camera lens) plastic cover, and, yes they use sprung pins to (hopefully) make connection. The phone antennas are in the lower (battery) cover.
I have found that many types of case massively deteriorate GPS reception of my phone. What puzzles me is why some users seem to be entirely unaffected; it's almost as if individual phones vary; even as an experienced engineer I cannot expalin it.

Since cases create mechanical pressure on the phone body and the contacts are very sensitive to their cover bending (they usually have a very light touch), it might be one of the reasons for reception deterioration. Sometimes even a hit of a falling phone can either destroy reception or improve it - saw it happening live on friend's Desire HD, it was very funny to see how the GPS that wouldn't lock properly for weeks, after the phone fell, started locking in 5 sec all of a sudden. Pure plastic cases shouldn't matter for reception otherwise, or at least I can't think of how can they possibly interfere.
By the way, Desire S' GPS is a bit on a weaker side - I compared it side-by-side to my MT4G, and it's always several lock seconds and a couple of locked satellites below. It should be plenty powerful for a good fast lock, though, and that's why I suspect disturbance on the HW side, rather than SW misconfiguration.

now that you guys are talking about cases, I was using a case mate barely there case before... long time ago gps fix was on the slow side (around a min).. but somewhere down the line of moving across ROM's I moved to MIUI GB (with the case still present) and the fix improved (without any AGPS patches or GPS fix apps).. now I dont use the case and have moved to Reaper CM7 based ROM and the GPS fixes are brilliant... looking at the build of Desire S I dont think that the contacts for GPS, wifi or phone antennas are at fault or can change with just a fall.. I can't pin the problem but I definitely feel removing the case has helped the gps fixes.

Jack_R1 said:
GPS fix issues can be as simple and HW-related as bad contact between the phone cover that includes GPS antenna (I guess it's the lower cover, but it might be an upper cover too), and the golden connector pin on the board. If you test all possible SW workarounds and they don't help - try to locate the antenna and make sure the connection is firm. Look for Vibrant GPS problems, they had such problem in the early batches.
Click to expand...
Click to collapse
Seems legit. By so far I am experiencing also constant GPS problem. It really might be the problem. I will make a try and let here know how it goes.

Forwox said:
Seems legit. By so far I am experiencing also constant GPS problem. It really might be the problem. I will make a try and let here know how it goes.
Click to expand...
Click to collapse
Clining contact did not help..
adding some wires to the antena (made some improvement)..
Than i orderd "new antena" for 8 eur form "Taiwan".
no may fix quick and with 12-18m an i does not lose fix anymore..
(and now i have working gps.. after 1 year of trying roms and waiting for better radio firmwares)
---------- Post added at 08:11 PM ---------- Previous post was at 07:38 PM ----------
fasty said:
What puzzles me is why some users seem to be entirely unaffected; it's almost as if individual phones vary; even as an experienced engineer I cannot expalin it.
Click to expand...
Click to collapse
You have first version of gps antenna which has been silently improved..
I bougt new antena (upper cover) and wifi antena is printed the sesame number, but gps antena has an number increased by 10. (which by my means, mean new version)
And with "new antena" i have reliably working gps now.
(htc service (here in SLO) wanted th have the phone one service for 14 day-s thats teh reason i didnt apply for warranty repair)

on stock rom gps is really slow..i have that experience before,actually one of the reason i rooted mine...now,got gps locked in less than 15 minutes...(my gps always turn off,on when want to use navigation only)

oTeMpLo said:
Clining contact did not help..
adding some wires to the antena (made some improvement)..
Than i orderd "new antena" for 8 eur form "Taiwan".
no may fix quick and with 12-18m an i does not lose fix anymore..
(and now i have working gps.. after 1 year of trying roms and waiting for better radio firmwares)
Click to expand...
Click to collapse
That's awesome! Could you please share a link to that item, please? I am really interested in that. I am still fighting with GPS. Sometimes it works, sometimes it don't...

[q] jiayu g4 gps

Hi everyone pretty new to the Chinese phones and apologies if this has been done before (i cant find it) but i have a JIAYU G4 youth which is running the latest custom rom off needrom.com (JY-G4 Yabe V7.0.2) this is the 3rd rom i have flashed and each one the GPS is very slow or does not work at all and you can not get a fix. The only way i can get it to pick up satalites is to use the engineer mode on mobille uncle tools which is quite long winded.
Ok so to my question "can the gps be improved by some sort of configuration?" I notice in the root of the sd card is a gps config file does this need altering somehow when used in UK?. Any help would be much appreciated as other than this it is a great phone.

The problem is rather the antenna in the back of the device when the device screen up and metallic body, the blocked antenna. GPS works well when the device display down.
But there are some guides on how to improve GPS software (according to me do not work):
http://gizbeat.com/2159/gizbeat-101-gps-not-working-on-mtk6589-mtk6577-mtk6575/
http://www.youtube.com/watch?v=ZnY_425NgB0

This is more than only a hardware (antenna) problem. I've noticed that when I connect an external BT mouse that the mouse itselfs gets a "spot on" fix, but the phone is struggling to keep this fix.
By editing the build.prop and disable JIT the phone has a much better GPS fix.

GPS fix issue in Jiayu G4
Finally the issue is solved by 100%
The problem is rather the antenna in the back of the device .
The PCB has contacts for GPS antenna , the 1st & 3rd are the ground & the middle i.e 2nd is the main antenna.
I just skipped 1 & 3 contact by putting insulating tape between contact & the antenna.
Only 2nd point is touching the antenna .
just that's all.
Now my phone fixes GPS with in a minute in cold start.
I tried with most of the available ROM.
Pls note : If you are not a technical person do not open.
refer to some mobile repair person .
soon release the photos of the same.

Re:Finally the issue is solved by 100%
pankaj459 said:
Finally the issue is solved by 100%
The problem is rather the antenna in the back of the device .
The PCB has contacts for GPS antenna , the 1st & 3rd are the ground & the middle i.e 2nd is the main antenna.
I just skipped 1 & 3 contact by putting insulating tape between contact & the antenna.
Only 2nd point is touching the antenna .
just that's all.
Now my phone fixes GPS with in a minute in cold start.
I tried with most of the available ROM.
Pls note : If you are not a technical person do not open.
refer to some mobile repair person .
soon release the photos of the same.
Click to expand...
Click to collapse
Hi Pankaj459,
I tried the software fixes, which got me a quicker fix. Unfortunately the fix is not very accurate.
Very often the GPS loses its way and I find myself about 100yards beside the road or in a nearby street.
I opened up my G4A and noticed that the 3rd pole had already been isolated with black tape. I did also isolate the left pole. Nevertheless, did not see any difference.
The fix took just as long/ short. Accuracy was just as dismal.
Is there anything else I can do? Would it actually help if I modded some copper wire to the GPS contacts, or would that not solve the issue?
Thanks in advance for your help.
Litening

for those who can speak german (like me) here's a link to my gps antenna project
h ttp://w ww.android-hilfe.de/jiayu-g4-forum/441446-jiayu-g4-gps-20.html#post7161636

litening said:
Hi Pankaj459,
I tried the software fixes, which got me a quicker fix. Unfortunately the fix is not very accurate.
Very often the GPS loses its way and I find myself about 100yards beside the road or in a nearby street.
I opened up my G4A and noticed that the 3rd pole had already been isolated with black tape. I did also isolate the left pole. Nevertheless, did not see any difference.
The fix took just as long/ short. Accuracy was just as dismal.
Is there anything else I can do? Would it actually help if I modded some copper wire to the GPS contacts, or would that not solve the issue?
Thanks in advance for your help.
Litening
Click to expand...
Click to collapse
So do you think the solution has to do with putting aluminium paper in the antenna? I have seen that fix in THL and it seems to fix the accuracy, maybe it is the solution.
Would anybody share a little tutorial on how to do it?

ertioct said:
So do you think the solution has to do with putting aluminium paper in the antenna? I have seen that fix in THL and it seems to fix the accuracy, maybe it is the solution.
Would anybody share a little tutorial on how to do it?
Click to expand...
Click to collapse
Hi
You should try to follow this step by step tutorial about configuring GPS + antenna mod , it reaches up to two meters accuracy in motion in a Jiayu G4T :victory: :victory:
A version in Spanish is available as well --> Versión en español :highfive:

GPS is not working

Hello. i have a question. I have a problem with my mate 8. It's that that my GPS is not working (i don't get a GPS fix). I've sent my phone to the repair shop with guarantee, but they refused to fix it couse i have 2 slight dents in housing and apparently that is what is couses the GPS problem. (one dent is in area of volume buttons and the other is where the charging port is). It's really the dents that can couse this, or is the GPS itself? I could probably change the housing myself (they want me to pay 110€ for replacing it), but how is with replacing the GPS module itself? is it even possible? thank you in advance

its called an SoC (system on a chip) for a good reason, namely that the whole system is built into one chip or the same motherboard. so ud basically have to exchange the whole mobo ^^ maybe its just a bad gps antenna contact though...how did u get those dents?
Sent from my Huawei Mate 8 NXT-AL10

Ok, that sucks actually then
Is it possible to figure out if the gps is bad without changing the housing first? I tried AndoiTS GPS TEST and i get AGPS in orange. Does that mean that module is fine? (I added a screenshot).
Oh, and I've got the dents whit dropping my phone -.-
And another question. Where is the actual antenna? Or is the whole housing that works as antenna?

Hi. I bought the phone on the 8th October 2016. GPS was fully working. On the 10th, I updated as there is an update showing on my phone. After the update. I cannot get any GPS signal at all. This is a bad update.

Flash
I had same issue after I incorporated the KANGvip tools into AL10369 , just flash the cyst from another ROM like b200 or similar. If you don't know how then flash ROM to a working Rom with GPS. Extract the custom backup from twprp. Reload the nonworking ROM and flash only cyst and boom cops can find u after via gps lol

gps antenna fix
jbmc83 said:
its called an SoC (system on a chip) for a good reason, namely that the whole system is built into one chip or the same motherboard. so ud basically have to exchange the whole mobo ^^ maybe its just a bad gps antenna contact though...how did u get those dents?
Sent from my Huawei Mate 8 NXT-AL10
Click to expand...
Click to collapse
thanx to finding this thread i kept on searching
i recently changed the screen on my phone and since gps failed completely (wifi also seemed to be lesser)
as the phone lays on the screen, the copper nipple in top left corner is the contact the gps antenna has to make with the case.
i placed some paper beneath the element holding this niple, thus pushing it up - BINGO
i get a 3d fix in no time like before
also wifi connection improved

Where is this nipple? https://d3nevzfk7ii3be.cloudfront.net/igi/BPviD4orcNjWNIdi
geerthugo said:
thanx to finding this thread i kept on searching
i recently changed the screen on my phone and since gps failed completely (wifi also seemed to be lesser)
as the phone lays on the screen, the copper nipple in top left corner is the contact the gps antenna has to make with the case.
i placed some paper beneath the element holding this niple, thus pushing it up - BINGO
i get a 3d fix in no time like before
also wifi connection improved
Click to expand...
Click to collapse

Mate 8 GPS fixed !
Finally, after weeks of researches & tests I found the "nipple" or copper pin !!!
It's indeed the one on the top left once the screen is on the table. Either you find a way to put it back in position... without breaking it (the best way is probably with your nail) or you just put some Aluminium (a tiny sheet of aluminum folded several times to get 1mn maxi alu to allow the final winding) in the rectangular "hole" on top right (opposite) of the metal cover of MATE8.
I discovered the "right pin" while testing to put a small aluminium foil on several places of the main board (once opened naturally) AND using GPS TOOLS (playstore) ! you have to wait several seconds to get the signal or at least orange dots on the "radar". Better to test first such tool first with a smartphone where the GPS is working fine and compare both phones while changing the place of the aluminium. Nevertheless, I hope you would not have to repeat my tests as I will clearly show the right "copper pin" in an attached picture ...
Hoping that helps.

keyid said:
Where is this nipple? https://d3nevzfk7ii3be.cloudfront.net/igi/BPviD4orcNjWNIdi
Click to expand...
Click to collapse
Please read my answer below

Wifi, Bluetooth and mobile hotspot are NOT WORKING ! G930F

I have a problem with my s7 G930F, wifi and moble hotspot are not working at all, when i turn on wifi or hotspot it just showing turning on ..
and when i turn on bluetooth it works for 5 seconds and then keeps switching off and on after every 5 seconds
i tried to wipe cache, factory reset, return to stock rom, install custom roms, install latest modem and bootloader but that did not fix the problem.
please help !!!

Does your gps works ?

NeoDJW said:
Does your gps works ?
Click to expand...
Click to collapse
Yes it's.

NeoDJW said:
Does your gps works ?
Click to expand...
Click to collapse
Yes it works.

Check water sticker on botton of sim slot

I had the same issue with a board i fitted to G930F bluetooth wasnt working nor wifi for no apparent reason i went through absolute everything firmware wise and system wise and couldnt figure out what the problem was i then removed everything once again looking for a loose connection it turns out the board i fitted in the top right hand corner there is a silver chip that controls wifi and bluetooth under the antenna there was a small black spot i noticed once carefully cleaned up i found the culprit there are 2 tiny fuses that blew conecting to the wifi chip this chip must also control bluetooth and NFC as that no longer works also.

Martty
Do you find a solution

daliyoos said:
Martty
Do you find a solution
Click to expand...
Click to collapse
I did find the solution unfortunately it requires the wifi ic chip to be replaced along with the fuses accompanied to the chip on the logic board but that means micro soldering the new chip on the other solution is change the board out when you take the antenna at the top off at the top right is the silver chip look at the circuitry and you should find a black burnt out spot also check the aerial for plastic burn where the chip sits
Thats the only solution available that ive found, not even the factory binary found the issue with the hardware though
That one chip though controls the wifi/bluetooth/android hostspot/NFC funnily enough though even though its blown visually the wifi toggles on still and will every now and then pick a network up for a second, the bluetooth toggles on but will not find any other device and other devices cannot find it either, the android hotspot turns on and broadcasts a signal but when trying to connect to it it will not connect, the NFC toggle is also set to on with the writing and toggle greyed out and NFC apps asking to turn on the chip but it cannot be toggled these are symptoms of the error,
If you would like to inspect your device,
If you dont know what your doing order a new backing i can successfully remove them without cracking them with a hair dryer, screen puller the cheap ****ty ring ones, and a guitar pick,
To start heat the backing of the phone up with hair dryer until its warm/hot next step is my secret trick to pop the watertight seal take the sim tray out and no **** blow into it youll hear the seal break get the ring puller pull it up enough to get the guitar pick in and just slide it all the way round,
Once the backs off theres 3 screws at top on antenna your gonna wanna use a phillips #00 for them once the screws are out get a pair of tweezers and slide them into the slot on the left side of the antenna where the vibrator is and pull up it will probably go flying if you use to much force but it wont break, the circuit and wifi module are now exposed on the top right diagnose the board for burnt spots if there is there, take the NFC chip off below the antenna and then the speaker to expose the charging port check the bottom right hand corner for circuitry burning also.

Matty1993 said:
I did find the solution unfortunately it requires the wifi ic chip to be replaced .
Click to expand...
Click to collapse
Hi, I have same problem for long, I tried all software options: factory reset, network reset, hard reset, wipe, firmware upgrade, downgrade,,
I can use NFC without problem but WiFI and Bluetooth are greyed out or stucking on turn on without finding anything.
Could you confirm what is the right IC for it ? I found two different IC number one on Ebay another on Part4reparirs , not sure which one is legit as both claim to be G930 wifi-IC (can't add link as I am new user)
also I would be interested to know where to buy fuse for it
I really miss my phone for few month using spare xiaomi now

aminkian said:
Hi, I have same problem for long, I tried all software options: factory reset, network reset, hard reset, wipe, firmware upgrade, downgrade,,
I can use NFC without problem but WiFI and Bluetooth are greyed out or stucking on turn on without finding anything.
Could you confirm what is the right IC for it ? I found two different IC number one on Ebay another on Part4reparirs , not sure which one is legit as both claim to be G930 wifi-IC (can't add link as I am new user)
also I would be interested to know where to buy fuse for it
I really miss my phone for few month using spare xiaomi now
Click to expand...
Click to collapse
Hey mate im a phone technician,
Ive got a few boards qnd broken S7 laying around ill pull one down and take a picture and label it and what not & will post it here for you,
The ic chip isn't actually a fuse its an actual chip which controls the wifi and bluetooth functions of the phone NFC is locted on 2 different part of the board aswell as wireless charging coil etc, so if that stuffed best of getting a new board, but however there is a small thermistor (ThermalTransistor) just before the wifi bluetooth ic hopefully for you its blown that and stopped current before getting to the wifi ic, i will also label this in the diagram
Hopefully in your case its the thermistor youll know anyway if it is will be blown with black or white residue everywhere and your antenna may be partially burnt out in that case, you will also need to check the daughter board for black or white burn residues also in the bottom right hand corner ill take a picture and label again also,
If i cant get the pics up straight away for you its because xda app is being a pain in the ass still and wont let me upload being playing up for a week now

Matty1993 said:
Hey mate im a phone technician,
Click to expand...
Click to collapse
Thanks for reply,, based on your explanation still other thing like antenna fuse thermistor could be damaged and ordering them one by one + shipping is not good idea.. I may better find cheap broken LCD S7 and ask technician to swap the board for me.
still looking forward to the pics... my Insta Gram acc is [at]kian.moments :fingers-crossed:

PX5 - GPS not working !! (Oreo 8.0)

Hi,
My px5 unit does not working with GPS . With App GPS Statut, i see many satellites (~22) but my gps does not fix or fix after 5-10 min !
I am root on Android Oreo 8.0 . My device has not file "gps.conf" in /system/etc !
where is configuration of gps in px5 Oreo ??
Thks

WINNY97 said:
Hi,
My px5 unit does not working with GPS . With App GPS Statut, i see many satellites (~22) but my gps does not fix or fix after 5-10 min !
I am root on Android Oreo 8.0 . My device has not file "gps.conf" in /system/etc !
where is configuration of gps in px5 Oreo ??
Thks
Click to expand...
Click to collapse
Try to change your GPS antenna, My unit came with a cheap antenna, I bought a new one by Amazon: same quality and GPS doesn't work.
Buy a best quality GPS antenna and moreover, update your ROM and MCU with the latest available (official files here: https://yadi.sk/d/umCvHqCDzHccr)
You should fix the issues.

giangel84 said:
Try to change your GPS antenna, My unit came with a cheap antenna, I bought a new one by Amazon: same quality and GPS doesn't work.
Buy a best quality GPS antenna and moreover, update your ROM and MCU with the latest available (official files here: https://yadi.sk/d/umCvHqCDzHccr)
You should fix the issues.
Click to expand...
Click to collapse
I've been pondering buying a replacement GPS module instead of using the stock one that came with my head unit. What improvements did the new antenna provide for you?

Entity 0 said:
I've been pondering buying a replacement GPS module instead of using the stock one that came with my head unit. What improvements did the new antenna provide for you?
Click to expand...
Click to collapse
Simply: The new antenna work properly, the old antenna did not!
I think the issue was simply the bad quality of the product, like cold solder, bad cable or poor antenna inside the plastic case. Once I changed the antenna, the GPS get satellites fastly and it fix the position very well. Pay attention while mounting it...I understood that sun, too warm, cable pulled/mashed/spoiled, make the antenna working bad. My antenna is now mounted and totally hidden inside the right pillar, and it works so good as it fix the position almost instantly after power up. Pay a bit more for a better antenna, those selled by "Pumpkin" are excellent and cheaps!

giangel84 said:
Simply: The new antenna work properly, the old antenna did not!
I think the issue was simply the bad quality of the product, like cold solder, bad cable or poor antenna inside the plastic case. Once I changed the antenna, the GPS get satellites fastly and it fix the position very well. Pay attention while mounting it...I understood that sun, too warm, cable pulled/mashed/spoiled, make the antenna working bad. My antenna is now mounted and totally hidden inside the right pillar, and it works so good as it fix the position almost instantly after power up. Pay a bit more for a better antenna, those selled by "Pumpkin" are excellent and cheaps!
Click to expand...
Click to collapse
May I ask what antenna you bought to make your GPS instantly lock onto satellites? I bought a new one but it's been more or less the same results, which are very minimal results lol.
Also keep it mounted on my dashboard with a magnetic mount. Do you think that could affect anything with the signal?
Sent from my LM-V350 using Tapatalk