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as you konw, S200 GPS is not easy to fix, let me tell you a simple method to fix this problem.
1. Turn off your S200, open rear cover, remove the battery, locate the gps antenna position.
refer to f1.jpg
2. Peel the black gps antenna carefully and turn over from left to right. use the multimeter to measure resistance between two electrodes and you'll find it's short-circuit status (~0 Ohms).
Look carefully at the root location of the antenna, there is a black transparent line, at the end of this line,you can find the short-circuit point, cut off this copper chips until the short-circuit point completely disconnected, then measure resistance between two electrodes to determine it is no longer short-circuit (Infinity ∞ Ohms).
refer to f2.jpg d1.jpg and modification diagram.jpg or this (surcart's pic).
recovery the antenna, turn on your S200 and test gps. Enjoy it !
refer to c1 and c2 pics (compare with HTC P3600, left is P3600, right is S200)
c1.jpg is before modify, c2.jpg is after .
btw, tracking speed is faster than before.
d1.jpg is a large pic
d2.jpg is the details after modified
maybe you can do it without peeling antenna off, try to cut the short-circuit position directly if you are not sure you can completely peel off. refer to d2.jpg or s200_p1.jpg(provided by wysxs, thx) or Victor79's pic .
Has someone tried it already?
of course, i‘ve finished this modification and tested, gps now is very fast to track
what do you mean with "confirm it's short-circuit status"?
but if this methode works, this would be great
Well, this would be excellent if it works as gps signal can be a pain in the ass to get on this phone. Can you explain in more detail and maybe a before and after-picture comparison on the removed "copper chips"? One that is more of a close up than the 2nd picture in your guide.
I'd like to know exactly what I'm doing before trying this out.
Thnx.
So can you make a video of this?
Yes a video would be fantastic
sorry for my english,
pls see these two pics (compare with HTC P3600, left is P3600, right is S200)
c1.jpg is before modify, c2.jpg is after modify:
btw, tracking speed is faster than before.
joyqing said:
sorry for my english,
pls see these two pics (compare with HTC P3600, left is P3600, right is S200)
c1.jpg is before modify, c2.jpg is after modify:
btw, track speed is faster than before.
Click to expand...
Click to collapse
That's great but can you open your modified s200 and take a picture like the f2.jpg that shows how it should look after you have removed the copper chips ?
We would like a more detailed guide of how to do this.
surcart said:
That's great but can you open your modified s200 and take a picture like the f2.jpg that shows how it should look after you have removed the copper chips ?
We would like a more detailed guide of how to do this.
Click to expand...
Click to collapse
pls see d1.jpg in the first post for details.
Wow... I tried and it works great. Find satellites in a flash.
thank you very much
Lucio
bbrulez said:
Wow... I tried and it works great. Find satellites in a flash.
thank you very much
Lucio
Click to expand...
Click to collapse
Good for you. I just lift up the tape a bit in one edge and realized that the tape is actually the antenna. Haven't done the mod yet. I expected a chip beneath the tape. How bad was your reception before the mod? Could you get a signal at all or nothing?
This thing might need a little more research. I was about to try this mod and started to peel the antenna off. I started at the top and the antenna accidentally tore a bit as you can see in the picture. Above and a little to the right of the white spot in the picture you can see the torn part. It's not torn all the way across but it's there. Anyway. I got a bit freaked out thinking I had ****ed the antenna up beyond rescue so I put the battery back in and started the gps viewer. Lo and behold I now have a stronger gps signal than before. Putting my phone in the same spot as before the tare i now have 5-8 satellites instead of the 2-3 I had before.
pls see modification diagram.jpg in first post, understand how to.
Why you guys don't use some tape to seal this? I don't think Acer put it there with no use. Did you check radio reception? Maybe that's the reason being there.
freco said:
Why you guys don't use some tape to seal this? I don't think Acer put it there with no use. Did you check radio reception? Maybe that's the reason being there.
Click to expand...
Click to collapse
what do you mean "radio reception" ? GPS radio reception or GSM radio reception? If it's GPS, pls see c1.jpg and c2.jpg in above to compare signal strength. if GSM, pls see GSM.jpg to find where is GSM antenna location. i just modify GPS antenna. i don't think the reason that Acer put it there is just to “reduce” the signal strength.
do you think S200 GPS signal strength and tracking speed are too bad? compare with my HTC P3600, i think yes, but after modified, i think no.
I meant FM radio reception. Does ti still work fine with no hands free?
freco said:
I meant FM radio reception. Does ti still work fine with no hands free?
Click to expand...
Click to collapse
FM works fine, listening now, no hands free.
Hi!
Isn't any other way to solve this problem of short-circuit without cutting things inside phone?
Something to isolate it, as freco said?
I wanted it to be reversable, you know, there must be a reason to acer build it that way, they aren't a bunch of incompetent that could not see this short...
PS: What tools did you use to cut it? Just a little stiletto would do it?
joyqing said:
FM works fine, listening now, no hands free.
Click to expand...
Click to collapse
Thanks. Maybe I 'll give it a try on weekend.
Hey guys as soon as I notice this connection/data problem I decied to make a thread about it because this issue has been posted before but with little success on fixing it.
So have you guys notice that the signal of the HD2 will go from HSDPA or 3G to EDGE to GPRS and so on (sitting on the same spot) has this happened to you...?
I think that 99% of HD2 users have experience this. One of the the things that was causing for such a bad reception is also the 2.08.50.08_2 radio (in some areas) I live in L.A. California and I had that problem then the new 2.09.50.20_2 Radio seem to help out with this issue.
BUT!
That is not the actual problem, its not just software its actually a HARDWARE problem as well, Yup!
For you see HTC decied to put the Antenna AT THE BOTTOM OF THE PHONE not on the top. Almost 99% of the devices that receive some sort off signal (such as a radio or a phone) are made with an antenna ON THE TOP for obvious reasons, probably one of the reason why HTC decided to go through with this (even knowing that this issue would emerge) is because of the camera and the phone being so thin.
Check out the picture (the antenna is right under the batterie pins) so every time you hold your phone just around the buttons section at the bottom you are actually blocking the signal therefore making the connection go back and forward
SO WHAT'S THE SOLUTION?
Well one solution is...
You might be right on. My 1st gen iPhone had the antenna on the bottom and that would cause poor reception if you covered it up. There was even testing done to prove that was the case. It only had edge so it didn't bounce around like your HD2. BTW, I live in LA and have never had an issue with the 3G, as a matter of fact, I'm nearly always on 3G, I can't even remember the last time I saw E. I live on the West Side, maybe more towers around here, or I'm holding it "right"???
I personally think it's a combination of what you found and the T-Mobile network.
I think its more than just antenna placement. I have set my phone on the table and watched it go from H to 3G to E. The antenna is not covered up so there is some other issue going on. My coworker also has the phone and doesn't have the 3G issue. While the placement of the antenna could be part of the issue I think it can also be fixed with a radio update. I remember when I had the Wing I was able to boost reception with a radio update, yeah it shortened battery life but not by much. I'm hoping for a radio update that would make it a stronger connection.
tuppaacc said:
For you see HTC decied to put the Antenna AT THE BOTTOM OF THE PHONE not on the top. Almost 99% of the devices that receive some sort off signal (such as a radio or a phone) are made with an antenna ON THE TOP for obvious reasons, probably one of the reason why HTC decided to go through with this (even knowing that this issue would emerge) is because of the camera and the phone being so thin.
Link to the HD2 hardware pictures
http://forum.xda-developers.com/showthread.php?t=582652
Click to expand...
Click to collapse
-Exactly what item in that picture are you saying is "the antenna"?
-Can you please reference a link where you found that identification?
EDIT: A question for the others experiencing the "connection flipping" that this thread is about: do you ever notice the connection icon changing while you a have an "active" connection (i.e. when you're actually passing data), or only when the connection is live but idle? I'd like to add this to some other anecdotal evidence that a couple of us are looking at for a related theory on the cause.
Sorry to say, but it is not the antenna placement. My wife's phone gets 3G all the time and mine doesn't. I called Tmo and is waiting for a replacement.
I dont even get an H i only get 3g or edge im in los angeles but this makes sense.I doubt the antenna booster might work
guys, guys, it is not just an antenna placement problem as xeebot and speoples20 are stating is a COMBINATION OF BOTH I've been using the newest radio updated for one day and it seem to fix most of the Issue (haven't gone down all the way to E) like I said on my first post if you feel its the radio try the 2.09.50.20_2 Radio or the 2.7 they seem to be the most reliable ones.
if you still having doubts try covering up the bottom part of your phone with one or both hand and see your bars go down and sirphunke look at the attached picture that's where the antenna is, if you look thoroughly on the others you will notice the cable that hooks to the antenna at the bottom.
tuppaacc said:
guys, guys, it is not just an antenna placement problem as xeebot and speoples20 are stating is a COMBINATION OF BOTH I've been using the newest radio updated for one day and it seem to fix most of the Issue (haven't gone down all the way to E) like I said on my first post if you feel its the radio try the 2.09.50.20_2 Radio or the 2.7 they seem to be the most reliable ones.
if you still having doubts try covering up the bottom part of your phone with one or both hand and see your bars go down and sirphunke look at the attached picture that's where the antenna is, if you look thoroughly on the others you will notice the cable that hooks to the antenna at the bottom.
Click to expand...
Click to collapse
so with the new radio you haven't had the data outage???
tuppaacc said:
if you still having doubts try covering up the bottom part of your phone with one or both hand and see your bars go down.
Click to expand...
Click to collapse
just tried this and I'm afraid to say it's the truth...I think this is the worst thing the engineers could have done!
tuppaacc said:
sirphunke look at the attached picture that's where the antenna is, if you look thoroughly on the others you will notice the cable that hooks to the antenna at the bottom.
Click to expand...
Click to collapse
Uh....I am looking at the attached picture
Again, there's a number of components in that picture, and I'd like to know exactly which one you're saying is the antenna. The only cable I see in this shot is the one hanging loose in the middle right of the picture...and in the other pictures that cable can clearly be seen plugged into the side of the SIM card housing.
I've seen this same set of pics that was first posted here at xda, and I've seen all manner of other tech sites link and refer to these pics, but in none of them have I seen indiviual components identified/located...so I ask you again to please reference where you found your information, because as far I can locate these are the only component-level views of the inside of the HD2
josemedina1983 said:
so with the new radio you haven't had the data outage???
Click to expand...
Click to collapse
yeah with the new radio the signal is amazing as loong as I'm not holding the phone from the bottom
sirphunkee said:
Uh....I am looking at the attached picture
Again, there's a number of components in that picture, and I'd like to know exactly which one you're saying is the antenna. The only cable I see in this shot is the one hanging loose in the middle right of the picture...and in the other pictures that cable can clearly be seen plugged into the side of the SIM card housing.
I've seen this same set of pics that was first posted here at xda, and I've seen all manner of other tech sites link and refer to these pics, but in none of them have I seen indiviual components identified/located...so I ask you again to please reference where you found your information, because as far I can locate these are the only component-level views of the inside of the HD2
Click to expand...
Click to collapse
Reference where i found this info!? Like I said on my first post IT IS SOMETHING I NOTICE!! (its right at the top) haha
There... I updated the pictures on the first post I think that's the antenna (because it resembles many other phones I've open myself) the top ones could be the speaker or the flash GPS or BT, so no room for the antenna. Now you get what I'm talking about??
If you want to confirm this just open you own phone or contact HTC as I'm not a tech and neither was I there wen they build this phone...
lol
A few months back my Legend went through a cycle in the washing machine. Afterwards I did all the recommended things (take everything apart, leave it in the sun for a day or two, keep it in a jar of water absorbent silica in the evening). Anyway, after three or four days of that, I put it back together again and my battery was dead. Tested it with someone else's battery, and everything worked perfectly, I even made a call with it.
I then waited about 3 months for a new battery (it got stuck at customs) which I finally go this week. Thing is, I now have 0 connectivity with the phone no matter what I do. I always have 0 bars, I can't connect to wireless networks (even though I pick them up perfectly), and I can't get the GPS to turn on at all. Everything else works fine (including the FM radio), but there's no connectivity.
I was hoping it might be a software issue of some strange sort, since the wireless picks up well but just says "connecting--disconnected" when I try to connect. A hard reset did nothing to the phone though.
Is there anything else for me to try? I'm running pretty thin on ideas at the moment. Would replacing the back cover fix any of the connectivity issues? Also, is it still possible for it to be a software problem, and should I maybe try to install a custom rom on it?
Any advice at the moment would be much appreciated. Thanks!
EDIT: I just realised that I had made things worse with my reset. Now I have no file browser with which to sideload apps and no internet connectivity. EDIT2: Managed to fix the file manager problem with ADB. Now just the actual problem again
The GSM antenna is in the bottom part that covers the battery compartment - I'd say you have some oxide on those two contacts.
Take a small screwdriver (or a needle) and gently scrub those pins on your phone.
As for the two on the cover, you'll notice those two parts come apart, so I'd take the inner part and gently brush the two contacts with a piece of cloth and a toothpaste - it's a good thing to gently brush something.
If that fails and you're sure you plugged all inside as it was...it could be another problem...
You may also try bending the two contact in the phone out - these act like a spring, but be gentle about it
P.S.: Is your Legend at least clean now?
EDIT: Now that I think about it, you can try the phone with piece of wire:
cut a wire of : speed of light/frequency in Hz and connect it to the two pins inside the phone
For USA:
299 792 458 m/s divided 1 900 000 000 Hz = 0,15778 m
Thanks Dr.Romca.
I'm trying the clearning out for now. when you say the battery cover comes apart, are you talking about the piece of plastic inside the rubber? There seems to be an additional piece of plastic inside the rubber which might come loose, but I'm not quite sure how to pry it out without breaking it. Any tips on how to do this?
I'll give the piece of wire a skip until the very end
It's not glued or anything, just push the rubber part in the middle and try to click it out...
Dr.Romca said:
It's not glued or anything, just push the rubber part in the middle and try to click it out...
Click to expand...
Click to collapse
Ahh ok, I wasn't sure what to expect on the other side. Didn't want to jam a screwdriver in between the plastic and rubber and hurt some electronic component. Managed to get it loose though, and gave it a thorough but gentle rub down.
EDIT: Nope, still no service on it. I still find it strange that it doesn't want to connect to the GPS or the wireless either. As far as I know, those shouldn't be affected by an antenna issue right?
That's strange... WiFi and GPS antenna is in the other rubber part....
It seems there might be something wrong with the PCB...
I'm at a loss here...
Damn I have connectivity issues here...
The strange thing is it worked once after the washing...
If you have the courage for it, you can also try this:
Take the phone apart, I mean really apart, if you can unmount the display/touchscreen. Then take the PCB - mainboard, try to put a sticker over a microphone and the repro, then take a toothbrust and a detergent and brush the PCB - make sure you clean all, there will probably be some metal plates that look they can be unmounted, so try to unmount them and clean beneath them.
After this take the PCB and put it in the hot-air oven (if you have one - NOT a Microwave! ) 40 - 50 °C for like an hour should do the trick...
You can also use alcohol to clean the PCB, but since it was water that caused this, I'm gonna presume you'll have more luck dissolving with water again...
Anyway, that's what I'd do, but I'm and engineer, so if you're not sure, just take the phone to service
Hello,
The WiFi and gsm signal are at seperate places on your phone, so you either got a major problem with the hardware, or the ROM just went nuts. I suggest you flash a new ROM before you take the phone apart, cause it might get damaged irriversably..
Goodluck, keep us updated!
Sent from my HTC Legend using XDA App
Thanks for the continuing advice. You're right about the engineer thing though; since I'm not an engineer I'll leave taking the phone apart until the very end.
I've never flashed a ROM before, but I'm sure I'll be able to figure that out. What initially made me think that the ROM might have gone crazy is the fact that the wireless actually picks up networks. The further I get from a network, the worse the signal, and the closer I get the better, so the wireless signal is working properly. It just seems to have a problem connecting, which seems like a software issue rather than a hardware issue.
If that fails, I'll send it to HTC and see if they can do a repair for me. I already sent it to them for a check-up and a new battery directly after I had it dried out. I included explicit instructions that it got water damaged, that I was not looking for a warranty repair, and I would just like them to make sure everything is working and bill me for the repairs and a battery. Two weeks later I get the phone back with a note saying that they noticed some water damage, and they don't do warranty repairs on water damaged phones Anyway, I'll try them again.
If HTC fail to do anything again, I'll try my luck with a full teardown. Still, ROM flash first.
EDIT: Ok, so I followed this (http://forum.xda-developers.com/showthread.php?t=894465) post up until the end of downgrading your rom, and the problems are exactly the same. From my understanding, this would have installed a clean rom onto the phone, so any software issues should have been cleared up. I'll still try and install a custom ROM, just because I've always wanted to and just maybe something will work, but the software problem seems an unlikely explanation now.
This is getting very strange now. Using my newfound "Wi-Fi" Hotspot powers, I can actually create a Wi-Fi hotspot that my computer successfully connects to. Once again, if the hardware was broken I don't see how this could work. I still can't connect from my phone to any Wi-Fi network though.
As I mention (for a completely unrelated reason) earlier, I sent the phone in to HTC. This might be a very dumb question, but is it at all possible that the ROM on my phone works at a different wavelength/frequency than what is used by carriers in South Africa (where I'm from)? I'm thinking maybe HTC did a stock reset or something which changed it, because I never tested my phone after getting it back from them. That would also explain why my phone doesn't have reception with the current ROM. Just note that I have no idea how these things work, it's a complete shot in the dark
EDIT: My GPS also works now, or at least the gps indicator flashes when it should. Since I don't have any kind of internet access, I have no way of knowing if the GPS works, but in the past it never flashed.
I'm currently thinking of using my computer's wireless to connect to my phone, and then bridging that connection with my UTP connection to connect to the internet. I have no idea if this will work or what exactly if it will get me closer to a real solution, but at least having internet access on my phone will make things a bit easier. Will let you know how it goes.
So have you succesfully flashed a different ROM?I'm not sure what type of rom should you have but WWE by it's definition should work...So if you have rooted, try any WWE ROM...
Dr.Romca said:
So have you succesfully flashed a different ROM?I'm not sure what type of rom should you have but WWE by it's definition should work...So if you have rooted, try any WWE ROM...
Click to expand...
Click to collapse
I first downgraded it to 1.31, and now it's on BlaYo's B0.2.
can you check what radio you are using?
You may want to update it!
It's in settings / about phone / software / baseband version
My is 47.51.32.17U7.13.35.05
Not sure if there's a special version for SA, but here is a radio update only:
http://forum.xda-developers.com/showthread.php?t=706435
Sorry for the late reply. Real life caught up for a day or two.
My baseband version was 47.26.35.04u_7.05.35.26L. I updated it with the radio update you posted, and it's still not working. As far as I know, South Africa can use any American phone except those on Sprint, if that helps at all.
Also, I was away from home for the last week, and now that I'm back home my phone connects perfectly to the wi-fi here. I am certain that I did not make any mistake in connecting to the other networks I tried, as I tested the settings on multiple computers and entered the passwords multiple times, but the wi-fi seems to have been a red herring. So the only problem left now is normal phone connectivity.
I'm sorry to hear that...I'm not sure what the L means at the end...but about the wifi thing, it has been mentioned here that different locations use different WiFi channels...so at this point it's almost sure you have a driver/settings mismatch somewhere...
but I don't know much about that...sorry..
So after my capacitive keys died I ordered a new power board with the capacitive keys I opened and replaced the board.
But after that I can't get 3g or H+ signal I can only connect to 2g and 4g signals and I get complaints from the person that I speak that they don't hear me well and my voice sounds like I have 1 bar of signal.
Anyone knows anything about this problem?
I have done full restore, wipe everything, installed cm 12.1 but I have the same problem.
Possibly know a little about this......
Back in my S2 days, I had reason to replace the USB socket board.
Before I did it, I did some research and found that this board was in some way connected to the signal reception side of things.....
I also discovered that there are a number of different versions of this board, and buying the wrong one would result in loss of signal. This all may still apply to the S5.....worth checking out.
Look at your old board and look for some printing on it that may or may not say "rev X.X" (the X's will be numbers) then compare it to the new board......
http://i.imgur.com/rVnFwJM.jpg
keithross39 said:
Possibly know a little about this......
Back in my S2 days, I had reason to replace the USB socket board.
Before I did it, I did some research and found that this board was in some way connected to the signal reception side of things.....
I also discovered that there are a number of different versions of this board, and buying the wrong one would result in loss of signal. This all may still apply to the S5.....worth checking out.
Look at your old board and look for some printing on it that may or may not say "rev X.X" (the X's will be numbers) then compare it to the new board......
http://i.imgur.com/rVnFwJM.jpg
Click to expand...
Click to collapse
Thx ill give it a try
The Wi-Fi signal on my I9505 is terribly weak. Sitting at the same desk the router is on - full signal; Walk 3-4 meters away - signal drops to 1 line; Go to a different room - disconnects due to no signal. I can only see 3 networks at 1 signal line while on another phone I get 11 networks - all with signal at 2+ lines.
My router is perfectly fine (works as expected and has great coverage on other phones/laptops - it still gives off great signal if I go next door/above/below me).
Phone software side I'd say is fine too, but I'm not 100% sure:
Issue happens both on latest WizCyan (TW based) and on latest RR (CM14 based), both using different kernels.
Currently on XXUHPG1 bootloader and baseband. PDA version is XXUPPI1 (according to the "Phone INFO" app).
Hardware side, I've tried a few things - bent all of the golden springs I could find just a tiny bit upwards, tried to clean the gray contacts on the mid bezel as best as I could (dry microfiber) - they weren't dirty or anything, but they seem scratched/shiny where the spring would have come into contact, is that bad? (I can take pictures if necessary)
I even flipped the blue antenna wire around (though I think that one only affects cell signal).
I also have to note that there's something wrong with my Wi-Fi IC / mobo because sometimes it stops working altogether (won't turn back on), needing a reboot or physical intervention. I doubt that would affect signal strength, as long as it's actually turning on, I guess?
Edit:
SOLVED!
Well, this is probably a very unique/fringe case - I found out there was a crack in my motherboard, just below one of the antenna connectors. I also found out that pushing down on where the crack is relinks the motherboard connections and gives back the full Wi-Fi signal. So I "ghetto-rigged" a piece of plastic to push down on the crack when I put the mid-bezel back in, and it seems to be working for now. Hope it holds up and doesn't cause other issues.
Actually, it could affect signal strength. You might want to check your antenna wire running down the right side of the battery compartment and make sure it isn't broken or partly disconnected.
You should also note that some phones have better antennas, thus having better reception.
So comparing it to a different phone isn't really a good way to measure the effectiveness.
Took some pics, I've no idea if they're of any help. Maybe somebody can tell if there's something wrong.
Strephon Alkhalikoi said:
Actually, it could affect signal strength. You might want to check your antenna wire running down the right side of the battery compartment and make sure it isn't broken or partly disconnected.
Click to expand...
Click to collapse
That's the wire I had flipped around. I even disconnected it to see if there's a difference, and it only weakened the cell signal. Full cell signal when I put it back. No change regarding Wi-Fi. If I run the phone with the mid bezel off, I only get 2 lines even next to the router, and it doesn't even connect - so I suppose the mid bezel antennas connect?
Pwnycorn said:
You should also note that some phones have better antennas, thus having better reception.
So comparing it to a different phone isn't really a good way to measure the effectiveness.
Click to expand...
Click to collapse
True, still, from full signal to 1/0 lines as soon as I go from my desk (and router) to my bed 5m away isn't right. Wi-Fi reception used to be as good on my S4 as on the other phones. (I can't remember exactly when this started.)
I believe you have a radio chip issue. Something that software cannot fix.
Solved. Thank you for trying to help.
@cLick1338: Telling people you solved the issue without revealing the solution doesn't help anyone who may come across this thread in the future. So how did you solve it?
Strephon Alkhalikoi said:
@cLick1338: Telling people you solved the issue without revealing the solution doesn't help anyone who may come across this thread in the future. So how did you solve it?
Click to expand...
Click to collapse
I had edited the first post. Figured it would be most visible for such people.
cLick1338 said:
I had edited the first post. Figured it would be most visible for such people.
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If you edited it yesterday I wouldn't have noticed it. The XDA app automatically drills down to the first unread post and I don't always think to scroll back up.
Sorry.