Hello guys,
following these steps solved my bad GPS as you can see with the screenshots.
for each GPS test i used "Gps status & toolbox" and i tested gps fix outside, on a balcony.
Starting situation: 6/24 satellites found.. no fix.. sometimes 8-10 satellites and then fix with about 80meters error
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the idea is that GPS antenna lies on the detachable module and LG did a mess designing it.
basically, if you take out your module sometimes out, probably you'll result in bad gps behaviour.
here a pic of GPS antenna's contact/hook
i taped it with electric tape in order to test if effectively it was GPS antenna
and, as expected, my gps signal went worst than first.
then i prepared a little square of aluminium foil by folding it about 4 times in order to get a certain amount of thickness
i also prepared a slice of adhesive tape by making a hole on the center
and finally i attached them to GPS antenna contact
after this i tested GPS in the same place and...et voilà!
which is exactly the same performance the phone had on the first weeks!
maybe this fix is not as elegant as possible but my aim is to make gps working before getting mad.. maybe you could simply change the module but i think that responsibility is of the other side of the contact, located on the frame. it's aluminium and maybe for warm and other reasons it loses his shape by making difficult communication between antenna on the module and phone.. take my theory as it is.. and enjoy!
albenex said:
Hello guys,
following these steps solved my bad GPS as you can see with the screenshots.
for each GPS test i used "Gps status & toolbox" and i tested gps fix outside, on a balcony.
Starting situation: 6/24 satellites found.. no fix.. sometimes 8-10 satellites and then fix with about 80meters error
the idea is that GPS antenna lies on the detachable module and LG did a mess designing it.
basically, if you take out your module sometimes out, probably you'll result in bad gps behaviour.
here a pic of GPS antenna's contact/hook
i taped it with electric tape in order to test if effectively it was GPS antenna
and, as expected, my gps signal went worst than first.
then i prepared a little square of aluminium foil by folding it about 4 times in order to get a certain amount of thickness
i also prepared a slice of adhesive tape by making a hole on the center
and finally i attached them to GPS antenna contact
after this i tested GPS in the same place and...et voilà!
which is exactly the same performance the phone had on the first weeks!
maybe this fix is not as elegant as possible but my aim is to make gps working before getting mad.. maybe you could simply change the module but i think that responsibility is of the other side of the contact, located on the frame. it's aluminium and maybe for warm and other reasons it loses his shape by making difficult communication between antenna on the module and phone.. take my theory as it is.. and enjoy!
Click to expand...
Click to collapse
Awesome guide
Verification
Can anyone else verify that this is indeed a gps contact on the bottom module? I'm using the Hi-Fi module and it doesnt have a pin like the standard chin piece does.
I believe that this is unfortunately not the gps contact .
I have tried this fix now and it had no effect on me .
But let's wait on the experience of other users .
And thank you for your efforts, albenex!
AngryDad3 said:
I believe that this is unfortunately not the gps contact .
I have tried this fix now and it had no effect on me .
But let's wait on the experience of other users .
And thank you for your efforts, albenex!
Click to expand...
Click to collapse
to be honest i'm not sure too..
i made this fix and noted so much differences on gps quality so i had to share it with you.
maybe this could be a starting point in order to understand why (in my opinion) every G5 at first has perfect gps and then after normal use get worst G# series GPS ever... any help/add will be appreciated
I've written to ifixit to get their impression. If I look at the teardowns for this phone, there is an antenna inside the bottom module and the lead does connect to the phone's metal back. But then again, there are multiple leads on the motherboard which does the same! As others have noted in other posts, opening the phone and raising these leads has provided positive results as well, so could it be a combination of both?
Will keep everyone posted on what ifixit says.
For me the Fix didn't work at all. I still get no GPS Connection....
GPS is NOT in bottom cover cuz camplus and hifi dont even have that + you would hold antenna in your hand ( doesn't make any sense ) , there are multiple threads overhere and no one even reads them... USE YOUR BRAIN GUYS
karendar said:
I've written to ifixit to get their impression. If I look at the teardowns for this phone, there is an antenna inside the bottom module and the lead does connect to the phone's metal back. But then again, there are multiple leads on the motherboard which does the same! As others have noted in other posts, opening the phone and raising these leads has provided positive results as well, so could it be a combination of both?
Will keep everyone posted on what ifixit says.
Click to expand...
Click to collapse
no it doesn't hook to the metal back.. it hooks to a while flat *Something* which is electrically conducive (tested with a multimeter)
you can note a black line which i assume is scratch made by detachable module contact when it enters and exits
Let me get this straight, the bottom part does contain a antenna, it is connect by the PCB that you see sticking out within the phone, the wide one is the connection for mic, speaker and charging, whiles the thin long one has 2 copper conductor is for the radio antenna, I have opened the bottom unit, but if people who has the hifi plus or cam plus, the manual does state it contains the anttena for the radio, meanning the GPS antenna is within the phone.
Hope this clears up any misunderstanding.
kms108 said:
Let me get this straight, the bottom part does contain a antenna, it is connect by the PCB that you see sticking out within the phone, the wide one is the connection for mic, speaker and charging, whiles the thin long one has 2 copper conductor is for the radio antenna, I have opened the bottom unit, but if people who has the hifi plus or cam plus, the manual does state it contains the anttena for the radio, meanning the GPS antenna is within the phone.
Hope this clears up any misunderstanding.
Click to expand...
Click to collapse
thanks
i tried again isolating the mysterious hook and got not gps signal at all for all day long.
reversing back lead to immediate gps fix.
maybe it's not gps antenna but definitively is a gps-related thing!
i guess gps signal is in such way interfered with that and maybe cleaning up the connecting spot on the white-thing attached to rear case would be a good fix. just try and explore yourselves!
interesting:
i tried some aluminum foil and I got about the same amount of fixed satellites (7) and same first fix time but there were only 16 satellites available instead of 22-28.
Just maybe there are different antennas in our phone, one for gps, one for glonass (russian) and one for bds (chinese) as they all use different frequencies. That by the way would support the fact that those 3 little pins are indeed for the positioning system
lolmensch said:
interesting:
i tried some aluminum foil and I got about the same amount of fixed satellites (7) and same first fix time but there were only 16 satellites available instead of 22-28.
Just maybe there are different antennas in our phone, one for gps, one for glonass (russian) and one for bds (chinese) as they all use different frequencies. That by the way would support the fact that those 3 little pins are indeed for the positioning system
Click to expand...
Click to collapse
yep, surely both things are mixed.. little 3pins and wide white antenna hooked with module.. if you isolate one of them you'll break gps signal
On my G5 H850, I had a few cases where GPS was having a problem getting a position.
In all of these cases I used GPS Status and Toolbox to reset the A-GPS state.
GPS Status and Toolbox, "top left hamburger menu", Manage A-GPS state, Reset.
After doing this GPS Status was able to get a fix quickly.
Following this, the Google maps and navigation worked normally.
The H850 comes with the gps.conf file set up to use NTP_SERVER=europe.pool.ntp.org
If you are rooted you can change the gps config file to use NTP_SERVER to be something in your region. They are just commented out.
This obviously won't help if you have a hardware problem, but some might just have A-GPS issues.
daverup said:
On my G5 H850, I had a few cases where GPS was having a problem getting a position.
In all of these cases I used GPS Status and Toolbox to reset the A-GPS state.
GPS Status and Toolbox, "top left hamburger menu", Manage A-GPS state, Reset.
After doing this GPS Status was able to get a fix quickly.
Following this, the Google maps and navigation worked normally.
The H850 comes with the gps.conf file set up to use NTP_SERVER=europe.pool.ntp.org
If you are rooted you can change the gps config file to use NTP_SERVER to be something in your region. They are just commented out.
This obviously won't help if you have a hardware problem, but some might just have A-GPS issues.
Click to expand...
Click to collapse
thanks for reply.. but g5 suffers from hardware problems.. further tests showed me that even cleaning the hook point between module and white antenna, helped a lot.. a g5 of a friend went from +-80m error to +-4m !
besides this i'll try this gps.conf thing
Hi all,
Thanks for this topic, just see it, after receiveing my G5 coming back from french LG'service (SBE by Allo PSM) for this problem
Default was : MKGF - GPS out of order. It takes 9 days to come back
Last time (I hope not) try first this solution
Mine wasn't rooted so warranty worked and pay nothing
See ya
Hello. The gps problem is a hardware issue, not software. I had the same problem, but it's now been gone for over a month and so far gps works like it should. There was a solution for bad gps on this forum, it included opening your device and pulling gps antena contact pins, located on the back of the display a bit up in order to make a better contact between the pins and gps antena contact pads which are placed on the inside of back cover, but people reported it only helped fo a day or two, probably because those fragile pins went back to their previous position, and that means bad connection with the antena pads. Now i took a bit different approach... If those f....ing pins are so fragile that putting the phone back together pushes them back down and gps gets broken again afted a day or two, why now make the antena pads a bit thicker. So i did.... I bought thinnest solder i could get (0.3 or 0.4mm wire diameter) to be able to be super accurate with the solder dosage, and i put a little solder on each pad, making them stick up about 0.1mm, maybe 0.15mm higher. I put the phone back together and voila.... Over a month later and no issues with gps at all. It connects to satelites quicker than my wive's G4 which does it super quick.
If you decide to do it with your device be very careful. Too much solder on the pads can cause a shortage in your device. Better to put less, then test, then put a tiny bit more etc. Than put too much and destroy your G5
Considering this phone is on warranty for most people, just SEND IT BACK! No point in finding weird ways of working around poor design from LG... They replaced the motherboard on mine and GPS locks just fine now. My Z force is still faster, but it's less of a pain than it used to.
Well... Weird or not, it works and about poor quality... I'd rather have a phone that needs a bit of tweaking done, than a device that can set my hands or trousers on fire without a warning
Related
EDIT: 30/1/2012.
Just a follow up on this fix. Well, got sick of constantly having to replace the tape under the battery cover. Over time it flattens, so since I now use the S2 as my daily phone I decided to open it up.
First I found the GPS connection on the motherboard. It connects to / touches a small metal piece on the inside of the rear housing. It's like a U shaped connector so I decided to lift it up with my fingernail.
For a little while it worked great but the problem returned. So I decided to open it up again and lift the connector even higher. Unfortunately I broke it leaving only a flat bottom metal piece on the motherboard side. There was now no way for the 2 pieces to touch so I screwed it completely.
So I then decided to solder a small bit on the rear housing side. I did that and put it back together. Ever since then the GPS has truely been 100% fixed. It hasn't missed a beat over the last 3 or so months of trying.
END EDIT.
NOTE: This is a hardware fix for those whose GPS is completely busted (NO sat views & lock). It is NOT a fix to improve tracking or lock or make an already working GPS better.
After flashing every modem, fw and kernal version I had completely given up on my galaxy s GPS. It had to be a hardware fault.
Back when I first got it, it was OK but a few months later became useless. This fix is hardware related and takes only minutes to diagnose and fix.
It's also probably more useful for pre-October models (i9000 international) which had this fault.
I do not take credit for finding out the fix. Credit for that goes to member 'allottios' (who heard about it from 'cbdrift') for bringing it to my attention on another forum topic.
The fix is simple. Remove the back cover and to the right of the speaker is the GPS antenna. It is covered by what looks like some sort of soft plastic tape.
Now open a GPS test app and then apply light pressure to the very top of the antenna with your finger. NOT the middle or bottom - that makes it worse.
If, like me your GPS shows instant improvement then you have just worked out your problem.
Simply attach a small piece of double sided tape or similar to the top of the antenna so that when you put the back cover on again their is pressure on that spot.
Hope you get the same results I did.
Edit: PICS ADDED: 1ST PIC - AT THE TOP RIGHT CORNER, YOU CAN SEE A WHITE STRIP WHICH IS THE DOUBLE-SIDED TAPE I ATTACHED TO THE TOP OF THE GPS ANTENNA. I DID NOT PEEL THE TOP LAYER FROM THE TAPE SO IT WOULDN'T STICK TO THE BACK COVER.
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,
Edit (03/05) - If this fix doesn't help, you may also want to try out another fix posted by 'stockie78' (post 209).
There is also a link below for more detail, including pics for this fix.
It is not as simple as the above fix and it involves removing the housing. I have not tried / tested this myself and am not responsible if you break your phone.
"stockie78
Unfortunately the g-spot trick did not work for me, so I decided to look a little closer and removed the plastic housing.
Another guy installed on the metal thingys there a cable and I did some test, too. Again no improvement with different cables and lengths.
But while fiddling around with the metal connector I thought maybe lifting it could help and indeed this was the trick for me. Improved my gps dramatically!
So instead of something pushing the antenna tighter, the metal connector now pushes harder and improves the signal quality.
Maybe a solution for some of you too..."
Link: http://forum.xda-developers.com/showthread.php?t=878970
Sent from my GT-I9000 using XDA Premium App
I can confirm that this works for me! Got a lock in two seconds and the arrow followed my path perfectly while I was on the bus, a feat that seemed impossible before! Thanks a million!
If I let go of the antenna the gps loses it signal straight away..
Seriously this deserves a bump! Got a lock on 12 Satellites(!) when putting pressure on the top of the antenna and lost it as soon as I let go.
I`m seriously impressed. Tested on Sygic Aura, iGo and CoPilot and they localyze me immediatly !!!! THANKS A LOT !!!!!
Tried on my SGS and can't honestly see and difference
I did something similar a while back by taking the phone appart to access the interior parts of the phone. I then bent the connector for the GPS up so that more pressure would be applied. It worked great at first then started to get worse after some time. I'm guessing this is because the connector reverted back to its original position (kind of like an elastic).
I suppose this is a similar trick, but instead of applying more pressure from the connector, it does it from the cover. I'll try to get hold of some tape to try this.
By the way I have a Galaxy S from July, and GPS sucks badly on mine.
Need detailed pictures!
Hope it works!!
THANK YOU VERY MUCH!!!!
My jam just dropped. I just got gps lock within seconds... in my living room, where I had occasionally one sat in sight.
Just applied a small piece of that blue sticky stuff on the very top of the gps antenna and voilà. Cover on and lock is a go go.
Thanks for sharing this
nice one! locked 12 sats after 5 secs!
so a small tape should do the trick eh?
Getting a lock as soon as I start GPS Test! No more jumping around in Google Maps either! This is THE best fix for the SGS yet! Finally I'll be able to use my phone as my primary GPS navigator!
Is it possible for someone to post picture of area that needs to be pushed! Thanks!!!
Toss3 said:
Getting a lock as soon as I start GPS Test! No more jumping around in Google Maps either! This is THE best fix for the SGS yet! Finally I'll be able to use my phone as my primary GPS navigator!
Click to expand...
Click to collapse
same here too, wtf if i knew that before ... i would not have so many gray hairs
thanks for sharing
p.s.: connection stays good without any further pressure here, put the cover on again, gps still great
I can't believe this all these months, kernels modem and all kind of fixes and the solution is a duct tape, wow!
Thanks works for me!
Asterix040 said:
Is it possible for someone to post picture of area that needs to be pushed! Thanks!!!
Click to expand...
Click to collapse
You should see an elongated rectangle shape on the rightmost part of your phone after removing the back cover(just to the right of your speaker and sim card) - just apply some pressure on the top part(for me it takes a fair bit for it to work) and voila you're done. I'll try to post pics soon!
Second pic taken while indoors on a cloudy day!
Twinsis said:
I can't believe this all these months, kernels modem and all kind of fixes and the solution is a duck tape, wow!
Thanks works for me!
Click to expand...
Click to collapse
Not Duck. Duct, like air duct ; )
Toss3 said:
You should see an elongated rectangle shape on the rightmost part of your phone after removing the back cover(just to the right of your speaker and sim card) - just apply some pressure on the top part(for me it takes a fair bit for it to work) and voila you're done. I'll try to post pics soon!
Click to expand...
Click to collapse
That would be most appriciated. I'am visual person!
This actually works!!! I bought the galaxy s back in july and the last few months I have been unable to get a gps fix no matter what I tried! After reading this thread I went outside and pushed the top of the antenna. In a few seconds i got 5 meter accuracy and 8 satellites in use! Now I have to find a way to keep the antenna pressed! Thanks a million for the tip!
Samsung should buy you more than one beer!
How much money did they spent to fix that issue?
Thanks man!
This must be the sweet spot?
Edit: ops, to late ; )
/qsec
Well guys, I would like to try it, but my display seems to stop working as I remove the back cover?! Anyone has same issue? What could be wrong?
With backplate cover on, everything works just fine, but without....black screen. Although that phone seems to be responding
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"Climb the mountains and get their good tidings. Nature's peace will flow into you as sunshine flows into trees. The winds will blow their own freshness into you, and the storms their energy, while troubles will drop away from you like the leaves of Autumn."
--------------------------+----------------------------------+------+-----------------------------------------------------------------------+-------------------------------------------------+-------------
Hi,
WARNING!!! ------>PLEASE READ THE ENTIRE POST BEFORE DOING ANYTHING WITH YOUR DESIRE HD
TO ALL THE DHD OWNERS: IF YOU HAVE NO KNOWLEDGE OF REPAIRING THEN PLEASE DO NOT MAKE ANY ATTEMPTS. KINDLY LOOK FOR EXPERTS/PROFESSIONALS WHO SHALL HAVE ALL THE TOOLS, WHO SHALL KNOW SOLDERING (WHICH I WOULD DEFINITELY NOT RECOMMEND) AND SO ON. JUST A GENTLE REMINDER: YOUR PHONE IS EXPENSIVE AND ISN'T SOMETHING TO BE PLAYED/MEDDLED WITH.
--------------------------------------------------------------------------------------------------------------------------------------------------
TO THE MODS: I have tried my best to make sure the solution is genuine. I have requested the Desire HD owners to understand thoroughly the procedures of repairing . I presume that the readers are well educated and sensible. Despite that, if you feel that many are disappointed or not satisfied with the method i've described, you can terminate this thread. What I've mentioned is based on my true experience and my only intention is to help people.
--------------------------------------------------------------------------------------------------------------------------------------------------
RECOMMENDATION: Install GPS apps such as GPS Status and GPS test and see if you happen to get a good fix, if not please proceed.
--------------------------------------------------------------------------------------------------------------------------------------------------
After having searched for GPS solution, I literally gave up on this. Now, after the fix, I am so happy that I keep looking at my GPS software locking the coordinates even though i am not travelling.
You might have heard of the following:
a) GPS signal is low during rainy days due to clouds
b) GPS signal is weak inside buildings due to concrete walls etc..
I had the same issue and I thought I ended up with a hopeless phone, later that I realized that It is the best phone I bought.
I finally fixed my GPS issue, the results are:
a) My Desire HD got locked with all the 12 satellites, during the rain
b)I am in my bedroom and I get around 6 - 7 GPS signals.
What could the issue be: SOFTWARE/ RADIO -------> NO
The issue is------------------------------------------> HARDWARE
Procedure
[credit: waveking9 from XDA and knglaser from Youtube]
1. At the rear of the DHD is the camera Flash zone (A small Rectangular casing)
2. First, Turn off your DHD and remove the battery.
3. Then open the casing: You need sharp tipped tool to open it. Be careful, take your time: Place the sharp tip tool( like your screwdriver etc.) at the right side of the casing and pull it out.
4. Once you succeed, you notice that the casing has two gold contacts and your DHD has two spring contacts (gold).
5. Blow off the dust, if any, and mildly pull the spring upward so that the casing and the spring have a firm contact when you place back the casing.
6. Once done with the spring contact, clean the casing contacts properly.
7. Place the casing back: from left to right: pretty tricky but you can do it.
8. Thats it, power up your DHD, install a software called "GPS Test" and see the magic for yourself.
http://www.flickr.com/photos/4588147...7626706509210
[credit: lrm537]
Disclaimer: I am not responsible for any damage, do it at your own risk. It worked for me. I hope it works for you too.
Peace,
Rakesh
Latest Addition: Dated 4/16/2012
Soldering has never been recommended in the main post. I would request every DHD owner with soldering in their mind to first use standard repair procedure which must work by the way. The alternative is to invest $5 on the antenna casing which could be found in Ebay or other popular E-shopping websites.
Only those with soldering expertise could take the extreme steps because extreme heat can burn the internal circuitry or adversely hamper the very intention of this post.
--------------------------------------------------------------------------------------------------------------------------------------------------
For those successful and unsuccessful in solving the GPS issue:
I stumbled upon this post and, to my astonishment, someone has already dealt with this issue. This post offers a clearer and technically insightful detail on GPS and it's working. The smarter readers shall make most out of it even though it is for Samsung phones. All the credit goes to this gentleman:
http://forum.xda-developers.com/showthread.php?t=878970
please thank him.
--------------------------------------------------------------------------------------------------------------------------------------------------
I never gave a check on the SNR before the repair, but now I get around
[22dB-avg/32dB-peak/6-7 sat/15 meters max accuracy/3 min max hot fix/ 30 sec max cold fix] within the house(near the window).
under open sky, it comes to around
[25dB-avg/36dB-peak/11-12 sat/6 meters max accuracy/20 sec max hot fix/6 sec max cold fix]
--------------------------------------------------------------------------------------------------------------------------------------------------
I totally agree with the point that it's hardware and it is not something to be messed up with. This is a delicate process needing surgical precision in repairing. For anyone planning to use this technique, please think twice and make sure that you are equipped with required tools. Watch YouTube videos on disassembling, or look for HTC tech support. I too am disappointed with HTC and I feel that HTC guys need to pick up with Apple guys when it comes to hardware testing. It's a shame that they are not able to rectify such issues. May be they will rectify this issue, but the future generation phone customers will benefit out of our disappointments.
The challenge is to make the GPS work without the support of WiFi and/ or data plan. In my case, I don't use data plan due to expenses, so I rely solely on GPS and not A-GPS. Apart from the radio signal for audio communication, the GPS uses extremely high frequency (around 1560 MHz) and other than the internal software performing complex convolution of Baseband signal along with the acquired GPS signal (could be weak) in order to triangulate our locations based on the radio stations nearby, I don't think they will be of any help for this matter. The issue arises when there are few radio stations or towers, specially in outskirts or country sides.
Internal GPS receiver module defect is like 1:1000 and GPS antenna contact issue, I believe, is around 20:100 due to mechanical wear/ vibration and hence the probability of making your GPS work, using the technique I mentioned, is pretty much high.
Like most of the posted messages: BE CAREFUL.
--------------------------------------------------------------------------------------------------------------------------------------------------
Apart from the aforementioned solution, we also need to consider the external casing used for DHD and how it affects the GPS performance, following video shows one such test:
[credit: shishengsun from Youtube]
again, it is up to the user to decide the quality of the casing, not just in terms of their robustness, but also their affinity towards in-coming GPS signals. However, it is highly recommended for the DHD owners to use external casing so as to protect them from impact fracture, dust and scratches.
--------------------------------------------------------------------------------------------------------------------------------------------------
My final quote is "being half-witted is worse than not being witty at all".
So study through various informations posted elsewhere in internet, understand the technical aspects of the device (for example: which material could affect the SNR of GPS signals (plastic, silicone, metallic etc..), circuital aspects of GPS receiver etc.
Good luck
can get GPS signal indoor too?
yes, it worked for me.
I haven't had any issue with GPS since i got my DHD in December
GPS (by definition: Global Positioning Satellite) systems inherently need a clear view of the sky to work and get a "fix" on your location.
Hence it doesn't work indoors. Or will work very briefly right after going indoors from a running session outside.
Sent from my Desire HD using XDA App
I stay in a three-floor apartment in California (I stay in the 2nd floor) . I get GPS fix while Sitting/Standing besides/around windows and, to my astonishment, I happen to get the signal even in my living room after dealing with the hardware. I didn't mean building in a literal sense, it could be around the vicinity of sky like windows and patio etc..
Worked on both my DHD's thanks alot. Also found out some interesting information. DHD's with the hole arnt just for eazy access to that cover, there is in fact a second microphone inside. I know this because one of my dhd's has it and the other does not...INTERESTING!
OMG
you are a life saver!!!
hard to get in and added a little scratch to my phone :-(
but once in i found a little piece of plastic covering the gold contact
removed it and blow in that area
then lifted the 2 gold contacts up a little
very sceptically put phone back together and
connected straight away in 20 seconds to 6 Satellite
happy to say the least.......
What type of tool are you using to open it ? having some difficulties
thanks man
mero01 said:
What type of tool are you using to open it ? having some difficulties
Click to expand...
Click to collapse
If you take out the battery you can partly push it up with a slim screwdriver from within,then with another very small screwdriver wrapped in tape to avoid scratching pry it open from above.
By the way are you guys using gingerbread Rom? I tried this a while back but could only get gps to work properly on gingerbread using software method aswel.
thanks a lot.
Thanks for this solution. It's simply amazing! I always had problems finding a good signal. Now my phone found 6 satellites in a half minute.
Thanks a lot
Thank you,I had also given up.
This is one to store away for future use - thanks a bunch.
Push the THANKS button on him
10000 Thanks !
Thanks Dude !
Finally someone give the solution for that issue.
<youtube><dot><com>/watch?v=JfatoeWbMRk&feature=related
Wow. Wow, Wow, Wow, Wow, WOW!
Your are a legend!
I was just about to buy a bluetooth gps receiver, as I'd given up on ever getting the built in receiver working.
I've gone from occasionally being able to get a bad fix, to a good fix in a matter of seconds. This thread needs to be made sticky.
I accessed the underneath of the cover, via the battery compartment as suggested, it seemed to open up pretty easily for me.
Its just a shame that I didn't know this a few weeks ago, when I found myself in a foreign country with no working GPS!
Thanks once again!
Hi guys, correct me if I wrong, but doesn't these 2 gold contacts belong to the flash ?
How does it influence the GPS ?!
This thread is only interesting for technical gifted people, because you can brick your device !!!
I would like to share a GPS Antenna Hardware Hack i found here "http://www.androidpit.de/de/android/forum/thread/435065/HTC-Desire-HD-Hast-du-GPS-Probleme-mit-deinem-DHD"into the internet some time ago.
I tryed allot of fixing apps and software modifications but nothing works realy good for daily work with gps so i started to soldering a cable (0,8mm) to the GPS Antenna contacts (have a look to the picture)
after the assembly and a new start I had after 10sec sat-fix from 5-6 satellites in the room!!!
Outside I have sat-fix within 2 sec
Here some steps how to do, but be carefull you will lose the warranty of your device
1. open the device like in the youtube video described (http://www.youtube.com/watch?v=7qm_z65LA8k)
2. solder a cable to the antenna contacts like the picture shows
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
3. assembly the device ... reboot and have fun
Big THX goes to pooganes for sharing his idea on Andropit
ROM: CoreDroid DHD V8.2 RC8
Phone: HTC Desire HD
Android Version: Android 2.3.4
Build No: 1.45.401.2
Sense Version: 3.0
Kernel: 2.6.35.14 - Lord Clockan V4 CFS (with Killersloth UV Scripts)
Radio: 12.62.60.27U_26.13.04.19_M
So phones don't really have an antenna?
Sent from my PG86100 using xda premium
ceyo14 said:
So phones don't really have an antenna?
Sent from my PG86100 using xda premium
Click to expand...
Click to collapse
of cause it had a antenna, but the oryginal antenna doesnt works realy good
i had no gps fix without my cable here and after soldering the cable i had a satfix within 2 seconds outside
Great mod!
Yep, GPS is probably the biggest problem in the DHD.
In my case, I usually get fast fixes in GPS Status, but then CoPilot or Sygic take forever to pick up the signal
The solution seems to leave GPS Status opened in the background and then opening the gps program.
Other times, rarely though, not even GPS Status can get sat fixes.
I'll be trying other radio versions. But it's annoying stuff.
Sadly, I'm not very good with soldering.
joooe said:
Great mod!
Yep, GPS is probably the biggest problem in the DHD.
In my case, I usually get fast fixes in GPS Status, but then CoPilot or Sygic take forever to pick up the signal
The solution seems to leave GPS Status opened in the background and then opening the gps program.
Other times, rarely though, not even GPS Status can get sat fixes.
I'll be trying other radio versions. But it's annoying stuff.
Sadly, I'm not very good with soldering.
Click to expand...
Click to collapse
with my hardwarehack u can delete faster fix and every other gps fix apps, i tested something around 10 fix aps and mods but nothing works realy good for me.
after soldering the cable to the device it works like my garmin gps system
and hey u dont need to be a soldering good, have a look to the contacts and think about it
If I could find a way of isolating only the pins while soldering, that would protect the motherboard from any mistake I make. Like a piece of aluminum foil with two little holes in it or something.
Hmmmm... Might try that.
Thanks!
By the way, what kind of cable did you use? Anything special?
joooe said:
If I could find a way of isolating only the pins while soldering, that would protect the motherboard from any mistake I make. Like a piece of aluminum foil with two little holes in it or something.
Hmmmm... Might try that.
Thanks!
By the way, what kind of cable did you use? Anything special?
Click to expand...
Click to collapse
nothing special , i used 0,8mm copper cable that i had from an old headset
Hi, I had the idea of this set several months ago. It works fine but the signal quality is not as good as an original antenna that works well.
After 2 months of use, I bought a new GPS antenna DHD and I withdrew my cord.
The signal with the original HTC antenna is better (available on Ebay).
My Fr Tutorial (april 2011)
thats a nice mod, but really dangerous for non technichal used people.
but really interessting!!
Ok, tried this yesterday.
No soldering though, as I was scared to ruin the phone.
Grabbed a 3 cm cable from a 12v car leds and just hooked them up to the 2 pins, just twisting a little so they don't come off.
At first the results where not much different. Opened it again, rewired them and voilá.
It's like magic. Just got close to my window and bang!, less then 5 seconds.
I even wiped the phone and installed the rom again and still works!
By the way, I looked at the contacts of the cover itself and tried to rub a little bit with a screwdriver to remove possible rust. Bad news.
Most certainly, the gps problem lies with these contacts. They are too thin!
When I tried to rub a little, I started to see the plastic underneath!!!
So, maybe, the little dark dots we see in them are just the plastic showing up due to use. That's why gps doesn't work as it should.
joooe said:
Ok, tried this yesterday.
No soldering though, as I was scared to ruin the phone.
Grabbed a 3 cm cable from a 12v car leds and just hooked them up to the 2 pins, just twisting a little so they don't come off.
At first the results where not much different. Opened it again, rewired them and voilá.
It's like magic. Just got close to my window and bang!, less then 5 seconds.
I even wiped the phone and installed the rom again and still works!
By the way, I looked at the contacts of the cover itself and tried to rub a little bit with a screwdriver to remove possible rust. Bad news.
Most certainly, the gps problem lies with these contacts. They are too thin!
When I tried to rub a little, I started to see the plastic underneath!!!
So, maybe, the little dark dots we see in them are just the plastic showing up due to use. That's why gps doesn't work as it should.
Click to expand...
Click to collapse
The GPS chip will store satellite location data (in itself) even through a ROM wipe, afaik. So once you get a fix once, it will usually be much faster to lock thereafter (for a day or two, in the same location). You can use GPS Status to wipe the GPS chip's data to get a true cold fixes for testing.
I don't remember if I wiped the gps data with Gps Status.
Going to try it now.
---------- Post added at 01:17 PM ---------- Previous post was at 12:38 PM ----------
Reseted the A-GPS data, didn't even dowloaded an updated one (my monthly data plan is over for this month) and I can confirm that the lock showed up in less than 10 secs, both in GPS Status and CoPilot.
I'm indoors, on the second floor, with big windows. Phone was left against the window glass.
Brilliant stuff.
joooe said:
I don't remember if I wiped the gps data with Gps Status.
Going to try it now.
---------- Post added at 01:17 PM ---------- Previous post was at 12:38 PM ----------
Reseted the A-GPS data, didn't even dowloaded an updated one (my monthly data plan is over for this month) and I can confirm that the lock showed up in less than 10 secs, both in GPS Status and CoPilot.
I'm indoors, on the second floor, with big windows. Phone was left against the window glass.
Brilliant stuff.
Click to expand...
Click to collapse
Congratulation
Damn, your too late
Took my phone apart a few weeks ago to pimp it
But don't want to take that thing of again because it's a pain in the ass.
Overloaded said:
Damn, your too late
Took my phone apart a few weeks ago to pimp it
But don't want to take that thing of again because it's a pain in the ass.
Click to expand...
Click to collapse
Not really. Use a small customized tool, slightly bent at the tip and insert it carefully through the battery compartment, aiming at the cover. Just a little effort will do. The cover will pop up sligthly, just enough for you to put your nail in it.
Wonder how easy it would be to get 2 of the small ipex connectors and make a small cable yourself?
would be a lot safer then soldering it...
Firstly this "hack" takes longer than 2 seconds...
Secondly a large majority of GPS reception issues in DHD are related to bad contact between phone and antenna.
So check this connection before voiding your warrenty.
otherwise thanks for the info.
so i tried this, and i had to solder the contacts on the antena to have contact with wire and little doohickey thing that pops out of the motherboard, it works better but its not that big of a difference sure i get 3 more satellite locks, unless you guys are using a patch, which i don't know about, plus sometimes it takes more than 10 second to find satellite, are you guys using a patch??
Big thanks. My GPS works again and faster than ever !
This is really handy as I have bent my contacts up so much now that they have snapped through weakness, which means I get NO signal at all. I was thinking about trying to replace them with small springs or something a bit clever like that, but this idea is even better!
Thanks for the idea
Before to procede, remember all electrial component can have fault so exist warranty. If you want, procede at your own risk loosing warranty
For this tutorial is raccomanded professional leadfree soldering iron
i solved my gps problem, it is hardware problem, so no settings, gpsaids and no other solution helped me.
Problem is caused by bad gnd conductivity between mainboard and antenna. It is conduced by:
1) CONDUCTIVE GUMMY (suggest me better name if you have ) This kind of rubber was used for old nokia 8210 for connect display to mainboard. It was the mayor fault for nokia 8210.
2) back cover gps antenna: When phone become hot, antenna go back and not good touch with motherboard. Then, when phone isn't hot, gps antenna remains with a kind of "hole"
First try software fix (it not helped me) then try my solution
Solution:
Attention: it will avoid warranty, do it at your own risk, i'm not responsable for any fault.
SOLUTION:
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"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
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}
here is antenna contact not used for my european i9000
Please check by yourself if it touch with your variant antenna,
if it is not used, you can remove and solder where was rubber
Now gps signal is immediate for me
Best regards
Leeno
The first picture is before and the second afterwards?
i moved in this third post the other solution,
it is easyer then solution in first post but i not like it because is not clean
Attention: it will avoid warranty, do it at your own risk, i'm not responsable for any fault.
For solve it i just removed rubber and soldered antenna to gps gnd mainboard like the picture.
Attention: if you use unprotected wire like picture, make sure it touch only gnd, not other components or you can damage phone.
Gnd require hard conductivity so
DO NOT USE VERY THIN WIRE
Ping-Pong said:
you csn also use gps files extracted from nexuss gingerbread
i think those have not changed in GRK39F
but i will be checking that today
ics.samsung-updates.com/stockplusmod/GPS_GRK39C.zip
Click to expand...
Click to collapse
software can't fix hardware issues,
your posted file will only update settings and north american server for gps
i fixed i9000 froyo with my fix
Looks interesting. Might give this a go thanks.
Sent from my Android shizzle!
Where do you find the "third antenna contact"? I guess there are three and I do not want to take the second ...
here is antenna contact not used for my european i9000
Please check by yourself if it touch with your variant antenna
I thought that the other connection was for GPS
What is the reason of this post? This fix is well known. A search might be helpful from time to time. The only useful info in this thread is the fact that you figured out that the other antenna is not used.
http://forum.xda-developers.com/showthread.php?t=878970
Besides yours there is also another post that does the same thing. Takes you to the first one http://forum.xda-developers.com/showthread.php?t=1043034
So no need for another one.
Trak-X said:
What is the reason of this post? This fix is well known. A search might be helpful from time to time. The only useful info in this thread is the fact that you figured out that the other antenna is not used.
So no need for another one.
Click to expand...
Click to collapse
No, sorry, you're wrong.
THIS fix were not known at all! The thread you linked just refer to pull up the OTHER contact of the gps antenna, not the RUBBER ONE, which actually is the source of the problem.
So the next time please read carefully before suggesting someone a search.
This thread is VERY USEFUL! This man deserves all the praise and should be acknowledged of the REAL FINAL GPS FIX which turned my phone into what should have been since the first day!
I was skeptical to say the least.
but this time, I have to admit: this solution works INSANELY WELL.
I made my own modded version, though. I removed the third unused antenna contact, and placed it over the conductive rubbed. no soldering involved. pressure keeps the contact in position and enhances the connection between antenna and mobo, similar but more effective than the other older solutions.
btw, I also changed server from europe.ntp.org to xtra1.gpsonextra.net, just like in my old acer liquid which locks really instactly.
connecting now in seconds in my living room (!!!) with 7 to 9 satellites. awesome. never happened before.
you deserve a huge thanks.
I did it this morning. I removed the rubber and soldered a wire between the contacts. I never had such a signal on my i9000, the gps works perfectly.
Huge thanks from here too.
anyone can post a picture of the contacts to connect on european i9000 ?
any screenshot of gps test ?
thx a lot to everyone
oracula whedka
wowww:good:
duffymm said:
anyone can post a picture of the contacts to connect on european i9000 ?
any screenshot of gps test ?
thx a lot to everyone
Click to expand...
Click to collapse
pictures in first post are self explaining.
I did not bother soldering anything. Just removed the unused antenna with some tweezers and placed it on top of the existing conductive rubber (but reversed upside down, though, to keep it level), I used a tiny bit of duct tape to hold it in place and to be sure it does not touch any other contact on the mobo.
I cannot exclude to solder it or use some conductive glue in the future, anyway, it sounds safer.
I can confirm this is THE solution. I am really astonished.
duffymm said:
anyone can post a picture of the contacts to connect on european i9000 ?
any screenshot of gps test ?
thx a lot to everyone
Click to expand...
Click to collapse
Sent from my GT-I9000 using Tapatalk 2
I use tutorial from first page, remove useles antenna connector and ruber. Put connector on rubber place (after clean connect) and gently fix with hot glue. After assemble phone use gps test but speed is same slow like before first fix time 03:06. I check contacts and all god.
@lcampori where u change from europe.ntp.org to xtra1.gpsonextra.net ?
(sry for bad english)
trut said:
I use tutorial from first page, remove useles antenna connector and ruber. Put connector on rubber place (after clean connect) and gently fix with hot glue. After assemble phone use gps test but speed is same slow like before first fix time 03:06. I check contacts and all god.
@lcampori where u change from europe.ntp.org to xtra1.gpsonextra.net ?
(sry for bad english)[/QUOT
gps.conf in /system/etc, you need a rooted phone the mod this file.
default server in sgs1 is "north-america.pool.ntp.org" which supposedly is not correct for european users. following suggestion here at xda, I changed the line to "europe.pool.ntp.org" months ago, and now after givig a look to gps.conf in the acer liquid to "xtra1.gpsonextra.net" and live happily with that.
I do not think this is the point, anyway. My old acer liquid uses "xtra1.gpsonextra.net" and locks sats in the blink of an eye, ditto for my wife's htc desire which has "pool.ntp.org". Any software related mod could be just placebo.
as far as I know (google search..), hot glue is not conductive. if so, you are not fixing anything. but I might be wrong.
Click to expand...
Click to collapse
I use hot glue just from side to fix connect in place and check with multimeter all good. In my gps.conf i change from "pool.ntp.org" to "europe.pool.ntp.org" voila first fix time 00:31 and also me not use any help like wifi or mobile data just clean gps. However this fix work...
Hmmm....
I will give it a try soon.
Thanks man!!!
Gesendet von meinem GT-I9000 mit Tapatalk 2
I updated with possible permanent solution HERE
Hi, I'm opening this thread in hope to make some order with the GPS issues many of us are having.
There is a lot of misleading information as to the cause and solutions that have nothing to do with fixing the GPS (the 3 pins which are for the volume rocker, for example).
My phone is H850 version, but relevant to all variants.
I would like to thank Rick Jones for putting me on the right track, you can read some on iFixit here
What are the issues?
GPS reception getting worse over time.
Not getting a fix.
Getting a fix but losing signal sporadically.
OK, let's start:
All the "magic" is concentrated in the very top - right of the phone (viewing from the front).
Digging through FCC site for documents, I found this:
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
As you can see the GPS antenna is top left (view from the back).
It was thought that the antenna is on the metal back, but this is not the case.
In fact, it is on the plastic frame that holds the LCD, sandwiched between the LCD and it's frame.
Here is a photo of an LCD frame without the LCD:
The strip then goes to the other side and under the PCB:
And connects to the PCB here:
and here you can see with the PCB removed:
This is with the PCB in place:
Now, this is the metal back where the grounding mesh is:
Now, to elaborate, The Antenna for the GPS is of a "planar inverted-F antenna" type. (see Wikipedia here)
This is where the grounding part comes to light - It is part of the antenna plane, though not the antenna itself.
The pin(s) mentioned must make good contact between the antenna, PCB, mesh.
Problem is one or both pins do not make good connection to PCB/mesh. this can happen over time.
Adding some additional layer in the form of a conductive foil, yields better connection (see photos, they explain what to do).
I did this on my phone, and reception became very good, though not exceptional when I compared to other phones.
I usually get 5-10 meter accuracy outside. While certainly good, should be 3 meters or better with GPS+GLONASS+BeiDou.
And indoors close to a window, I get better accuracy and fix time with other phones.
A strange thing that might be software related, I get much better results both in fix time and accuracy, while using the diagnostic menu (*#546368#*850# on the dialer and "field test" then do "GNSS POS test")
when compared to apps like "GPS test"
Not satisfied with this, I decided to find a better solution for the pins, and found a suggestion to replace/solder on the pins a better connector in the form of a spring contact (similar to the springs on the vibration motor).
I salvaged from some faulty phone, (not G5), those springs an soldered on top of both pins, to make a hopefully long term solution. Also I removed the mesh, cleaned the glue residue as I suspect this is part of the problem.
While this did NOT improve the reception, it does work fine. However, it does have the risk that you can damage the pins/PCB, so unless you have good soldering skills, I suggest avoiding this and using the foil method.
Some extreme close-up photos of the springs soldered on the pins:
To summarize, the antenna is in 2 parts - 1. the flex strip to the LCD frame, 2. the ground plane to the metal back.
The pins, probably through stress, heat, lose good contact to their relevant mates.
The other solutions (such as the 3 pins which was PROVED to be the volume rocker) gives temporary, if at all, solution because all it does is lift the PCB and not even on the correct side - avoid THIS IS FALSE.
Yep. You're right.
I checked out the posts here where people where offering elaborate soldering of wires, or that volume rocker connection. I quickly found a post, or site, elsewhere that described the same as you and I knew that was correct almost immediately.
Actually it probably was that iFixit page you mention.
shloms said:
Hi, I'm opening this thread in hope to make some order with the GPS issues many of us are having.
There is a lot of misleading information as to the cause and solutions that have nothing to do with fixing the GPS (the 3 pins which are for the volume rocker, for example).
My phone is H850 version, but relevant to all variants.
I would like to thank Rick Jones for putting me on the right track, you can read some on iFixit here
What are the issues?
GPS reception getting worse over time.
Not getting a fix.
Getting a fix but losing signal sporadically.
OK, let's start:
All the "magic" is concentrated in the very top - right of the phone (viewing from the front).
Digging through FCC site for documents, I found this:
View attachment 4337847
As you can see the GPS antenna is top left (view from the back).
It was thought that the antenna is on the metal back, but this is not the case.
In fact, it is on the plastic frame that holds the LCD, sandwiched between the LCD and it's frame.
Here is a photo of an LCD frame without the LCD:
View attachment 4337810
The strip then goes to the other side and under the PCB:
View attachment 4337812
And connects to the PCB here:
View attachment 4337823
and here you can see with the PCB removed:
View attachment 4337822
This is with the PCB in place:
View attachment 4337821
Now, this is the metal back where the grounding mesh is:
View attachment 4337820
Now, to elaborate, The Antenna for the GPS is of a "planar inverted-F antenna" type. (see Wikipedia here)
This is where the grounding part comes to light - It is part of the antenna plane, though not the antenna itself.
The pin(s) mentioned must make good contact between the antenna, PCB, mesh.
Problem is one or both pins do not make good connection to PCB/mesh. this can happen over time.
Adding some additional layer in the form of a conductive foil, yields better connection (see photos, they explain what to do).
I did this on my phone, and reception became very good, though not exceptional when I compared to other phones.
I usually get 5-10 meter accuracy outside. While certainly good, should be 3 meters or better with GPS+GLONASS+BeiDou.
And indoors close to a window, I get better accuracy and fix time with other phones.
A strange thing that might be software related, I get much better results both in fix time and accuracy, while using the diagnostic menu (*#546368#*850# on the dialer and "field test" then do "GNSS POS test")
when compared to apps like "GPS test"
Not satisfied with this, I decided to find a better solution for the pins, and found a suggestion to replace/solder on the pins a better connector in the form of a spring contact (similar to the springs on the vibration motor).
I salvaged from some faulty phone, (not G5), those springs an soldered on top of both pins, to make a hopefully long term solution. Also I removed the mesh, cleaned the glue residue as I suspect this is part of the problem.
While this did NOT improve the reception, it does work fine. However, it does have the risk that you can damage the pins/PCB, so unless you have good soldering skills, I suggest avoiding this and using the foil method.
Some extreme close-up photos of the springs soldered on the pins:
View attachment 4337842
View attachment 4337843
View attachment 4337845
To summarize, the antenna is in 2 parts - 1. the flex strip to the LCD frame, 2. the ground plane to the metal back.
The pins, probably through stress, heat, lose good contact to their relevant mates.
The other solutions (such as the 3 pins which was PROVED to be the volume rocker) gives temporary, if at all, solution because all it does is lift the PCB and not even on the correct side - avoid THIS IS FALSE.
Click to expand...
Click to collapse
Can you look over to the Antenna3 (top middle) and help me with my Cell reception problem? The phone's reception is horrifyingly terrible.
You are right , this helped me. I got this images from some forum post.]I tried the three contact one but that was just a dumb idea and broke my volume up
Don't try the three pin (those are volume contact points)method anyone who come here please read this
ChristopherXI said:
Can you look over to the Antenna3 (top middle) and help me with my Cell reception problem? The phone's reception is horrifyingly terrible.
Click to expand...
Click to collapse
Hi, I opened this thread for GPS antenna, but I'll try to help
Which model of the G5 you have and which frequencies? Also is the reception bad on LTE, 3G, GSM, which?
Any how take a look at those photos, to see where the contacts for ANT3, should you check:
View attachment 4340158
Great thread thanks alot Shloms!
that will be helpful to many people.
prannoytambe said:
You are right , this helped me. I got this images from some forum post.
Click to expand...
Click to collapse
Thats the wrong one!
it may work because it's the ground connection but the actual GPS antenna is the one above.
thetool said:
Great thread thanks alot Shloms!
that will be helpful to many people.
Thats the wrong one!
it may work because it's the ground connection but the actual GPS antenna is the one above.
Click to expand...
Click to collapse
oh might be mine had ground issue, but will try the other one once i open it for the vol button fix.
Still please lets help boost this post , other are killing peoples vol button with no fix.
Hi, I'm using Rs988. I live in Ukraine and here the operators support only 2g and 3g. The phone does not catch the signal of all operators. I think that the problem is in the antenna. As I understand the antenna for wcdma, gsm is at the bottom of the phone. How to improve the signal?
Отправлено с моего RS988 через Tapatalk
spinoza_web said:
Hi, I'm using Rs988. I live in Ukraine and here the operators support only 2g and 3g. The phone does not catch the signal of all operators. I think that the problem is in the antenna. As I understand the antenna for wcdma, gsm is at the bottom of the phone. How to improve the signal?
Отправлено с моего RS988 через Tapatalk
Click to expand...
Click to collapse
Yes for 2G, and some of the 3G it's the antennas on the removable battery "chin"
This is for your model.
However, as you can see some of the 3G are shared with Antenna 3 on the top.
You can check the Bottom removable part if the 2 contacts make good connection with PCB.
Do you get good signal with other phones?
shloms said:
Hi, I opened this thread for GPS antenna, but I'll try to help
Which model of the G5 you have and which frequencies? Also is the reception bad on LTE, 3G, GSM, which?
Any how take a look at those photos, to see where the contacts for ANT3, should you check:
View attachment 4340158
View attachment 4340159
View attachment 4340160
Click to expand...
Click to collapse
Using the At&t version. the reception is bad on all LTE/3G/2G
Another post a while back used liquid nickel epoxy. Can be found on Amazon on the cheap to basically dab extra material which would harden creating a contact surface. This would be a lot more practical than soldering on new springs.
Genial hombre!
Enviado desde mi LG-H850 mediante Tapatalk
I have not yet managed to fix my gps permanently.
I took a copper solder-wick, cleaned it well with contact spray and put it at the gps contacts mentioned here.
At first it works well but after a few days gps intermittent again.
I removed the copper wire, and bent the gps pin so that it will have a good connection.
checked the connection between the board and the GPS pin (0.00 with multimeter = GREAT CONNECTION)
I suspect the problem is with the antenna inside the back-cover.
Bottom line: Maybe it's possible to improvise the gps antenna with thin wires?
thetool said:
I have not yet managed to fix my gps permanently.
I took a copper solder-wick, cleaned it well with contact spray and put it at the gps contacts mentioned here.
At first it works well but after a few days gps intermittent again.
I removed the copper wire, and bent the gps pin so that it will have a good connection.
checked the connection between the board and the GPS pin (0.00 with multimeter = GREAT CONNECTION)
I suspect the problem is with the antenna inside the back-cover.
Bottom line: Maybe it's possible to improvise the gps antenna with thin wires?
Click to expand...
Click to collapse
Inside the back cover? the antenna is the white flex and goes between the LCD and the main frame.
I doubt that the soft contact (I marked in green, because it was a response to some other post) is part of the GPS.
In theory, yes you could improvise an antenna, but I see 2 problems - 1. it would have to be a very specific length for the frequency (if I recall right 1750Mhz?) 2. the back cover is metal, and once it is closed, practically the inside is shielded to signals.
It is only the very top of the phone between the main frame and LCD that hosts the 3 antennas, including the one for the GPS.
I even thought about drilling a tiny hole in the back cover and connecting a GPS antenna (like you find in most other phones, can be bought as spare parts for many phones), through a thin shielded cable, and sticking it on the back cover from the outside, but so far the springs on the pins prove to be reliable.
What do you mean by "the antenna is the white flex and goes between the LCD and the main frame."?
I have managed to find a replacement Dead G5 to test it. (I'll need to buy it if I want to keep it)
I have replaced the back cover - Instant fix. (get 3m accuracy outside and 10m inside)
That was my thought - the back cover sometimes is the culprit.
Because I tried everything and nothing really works.
With my back cover (no mods) the signal is very bad.
thetool said:
what do you mean by "the antenna is the white flex and goes between the lcd and the main frame."?
I have managed to find a replacement dead g5 to test it. (i'll need to buy it if i want to keep it)
i have replaced the back cover - instant fix. (get 3m accuracy outside and 10m inside)
that was my thought - the back cover sometimes is the culprit.
Because i tried everything and nothing really works.
With my back cover (no mods) the signal is very bad.
Click to expand...
Click to collapse
I mean this:
You can't access this part unless you heat the LCD/frame to separate them, the antenna is the grey flex strip/pcb that has the antenna trace etched on it. you won't see this part as it is between LCD/frame as I mentioned.
View attachment 4337810
Now, can you see the arrow? this is the remaining flex strip that has the connector that you are familiar with. And this connector, as you know, touches the metal mesh on the back case.
View attachment 4337812
What I did, if you read my original post, is solder springs on the connector, and removed the mesh because I suspected it was oxidized and/or the glue was not conducting well.
So far, so good.
My guess would be that your mesh has the same issue and the other case you tested has a good mesh.
If it's not too expensive maybe you should keep this back cover, although reading from other threads, some users bought a replacement cover with good results initially and the problem returned after a while.
From what I see, there is NO antennas on the back cover except the NFC antenna which is around the fingerprint sensor - this is even stated at the document LG submitted to the FCC .
The back cover is used as a ground plane for the antenna and is not in itself an antenna.
Thanks for your detailed reply.
My old back cover doen't have a mesh at all.
I played with it many times and put a cooper shim with a mesh beneath (exactly like you did here)
pulled the gps pin and cleaned every contact on the back with contact cleaner...
Sometimes it worked well for a day or 2... most of the time it was bad from the beginning.
You never know if it's really fixed, just after a few days. so annoying.
been working on it for way too many hours lol
(Picture of the original back and the copper I used, after cleaning well of course)
tried also using some silver wire I took from another phone... was very bad.
thetool said:
Thanks for your detailed reply.
My old back cover doen't have a mesh at all.
I played with it many times and put a cooper shim with a mesh beneath (exactly like you did here)
pulled the gps pin and cleaned every contact on the back with contact cleaner...
Sometimes it worked well for a day or 2... most of the time it was bad from the beginning.
You never know if it's really fixed, just after a few days. so annoying.
been working on it for way too many hours lol
(Picture of the original back and the copper I used, after cleaning well of course)
tried also using some silver wire I took from another phone... was very bad.
Click to expand...
Click to collapse
That is interesting indeed.
Ever since the "springs" fix I get a consistent good signal even when driving for hours and never lost signal, what's weird though, I never get less than 5 meter accuracy on any of the testing apps, but with the hidden diagnostic menu I get better signal and accuracy. I don't know, my model is H850 maybe my firmware V20c-ISR-XX. has something to do with it... for one thing, it only supports Quick charge 2.0, I checked the voltages with various certified QC 3.0 chargers, but that's not relevant to the GPS.
BTW, did you get a good accuracy (better than 5 meters) when using the original cover?
Anyhow keep us updated if it turns out the new cover is good long term.
My phone is Korean (rootable :victory
I got accuracy of 3m when using the copper mesh, but again only for a few days.
I will update. even now accuracy doesn't seem too stable indoors, but outdoors I get 3m.
indoors far from window I get about 10m-12m after stabilized.
I tested with iphone 7 - got 4-6m accuracy indoors almost instantly when far from windows
shloms said:
I mean this:
You can't access this part unless you heat the LCD/frame to separate them, the antenna is the grey flex strip/pcb that has the antenna trace etched on it. you won't see this part as it is between LCD/frame as I mentioned.
View attachment 4337810
Now, can you see the arrow? this is the remaining flex strip that has the connector that you are familiar with. And this connector, as you know, touches the metal mesh on the back case.
View attachment 4337812
What I did, if you read my original post, is solder springs on the connector, and removed the mesh because I suspected it was oxidized and/or the glue was not conducting well.
So far, so good.
My guess would be that your mesh has the same issue and the other case you tested has a good mesh.
If it's not too expensive maybe you should keep this back cover, although reading from other threads, some users bought a replacement cover with good results initially and the problem returned after a while.
From what I see, there is NO antennas on the back cover except the NFC antenna which is around the fingerprint sensor - this is even stated at the document LG submitted to the FCC .
The back cover is used as a ground plane for the antenna and is not in itself an antenna.
Click to expand...
Click to collapse
Strange. My GPS and cell signal dips low when i Touch the glass , and more strange, When i touch the glass part that's close to the notification LED the Cell signal increases from -113 db to -99 db
This this caused by bad Grounding? Because you speculated that the Cover it's just a Grounding plane
should i get a new back cover to test?
The covers you guys shows there is a patch near the LCD cable and the corresponding place it touches there is a Mesh that goes under the LCD flex cable, My cover and Midframe has neither of those.
the mesh that goes under the lcd cable : https://i.imgur.com/XOzFfQe.jpg
the patch that make contacts with the mesh :
https://i.imgur.com/BNjjvEb.jpg
GPS strength: https://i.imgur.com/btT9xtT.png
Touching the glass : https://i.imgur.com/xQ9K0rC.png