Database Develop

[Q] No Signal at all after replace the housing

After the replacing of my X1's housing with the new one in the SE Service center I went home gladly with my new X1 housing. I noticed there's an error in signal in my X1 when I was checking my phone at the SE center.. But I thought it was maybe due to poor reception thus I neglected it. (the officer in the SESC say so)
Now I know that there's some new problem arise.. Any idea what might cause this error? the phone can read the Sim card but there is no signal (no connection, no call or no data can be made). i try to check the antenna module, but it seem to be OK (i did not see any problem on it).
the next day i came to the SE center, they said it might be something wrong with the software (since i am used using cooked rom) how come it can make any different while i'm using it before i replace the housing. and they have to take it into the HQ. and guess what, it may take another 6-7 week... WTF
is there anyone having the same problem with me?

Well if you have the tools, you can try openingu p the bottom cover, that little rubber thing where it has the mini sony ericsson logo. Open that rubber up, and you should see a mini screw in the middle, open that up take it out, maybe just give it a quick clean, fit it back properly, and make sure everything is tight and see how that works out.
I've seen/heard a few people having such issue when taking the housing off, and not placing that radio/reception thingy back properly, therefore causing issues with reception.

briian_ said:
Well if you have the tools, you can try openingu p the bottom cover, that little rubber thing where it has the mini sony ericsson logo. Open that rubber up, and you should see a mini screw in the middle, open that up take it out, maybe just give it a quick clean, fit it back properly, and make sure everything is tight and see how that works out.
I've seen/heard a few people having such issue when taking the housing off, and not placing that radio/reception thingy back properly, therefore causing issues with reception.
Click to expand...
Click to collapse
I did it twice, just to make it sure that everything was on their place, also try to flash the ROM, The Radio but still remain the same....
any other suggestion or idea what should I do?

Same problem!
I had disassembled my phone by myself twice; the first time it worked perfectly, the second, unfortunately, it didn't!
I bought a new antenna module for U.S. $10, installed it myself (warranty ended three months ago), walked out of the service centre and voila; I had reception and managed to make a few calls. However, on the way back home, all calls placed while driving dropped every 5km, which means the hand-over between cell towers was failing. The moment I walked home it was dead; no reception whatsoever indoors.
Now the way I see it, this could be due to one of the following two reasons: either the RF power amp failed, which means that most probably the phone needs a new main board (too expensive, not worth it) or something went wrong during the assembly, like the smearing of a sensitive part by skin oil (thus causing a short circuit) or failure to position a connector or multiple ones to connect properly to their respective terminals/connection points.
Upon further investigation, I noticed that my phone wasn't properly grounded; whenever I connected it to a computer to sync using ActivSync or in disk drive mode, I got a small electrical shock (painful though) whenever I touched the phone. This, however, doesn't occur at all when I connect the phone to the wall charger. I disabled USB charging since day 1 of owning my X1i
I believe that the battery cover acts as a ground for the phone electronics; it touches four golden connectors which in turn touch the mini USB port, the GPS/Wi-Fi/Bluetooth antenna, a point on the main board half an inch away from where the loudspeaker is, and the metallic cover placed over the phone RF chips. Failure to ground the phone properly can result in either damaging any of these chips, building up a static charge that affects the antenna performance, or an open-circuit condition for one of the many systems on board.
Since my phone is fully working as a PPC now (PPC functions, Panels, Keyboard, Camera, GPS, Wi-Fi, Bluetooth, etc...) and since I get reception outdoors, and since I have a brand new antenna module, I am guessing that either the RF amplifier is dead, or the housing is ****ed up beyond repair (i.e. it can't be aligned perfectly to get perfect contact on all said points) that it's either shorting a connection, or opening one that is vital for the cellular radio to function properly.
So what to do? Well I forced my phone to do two things:
1. Settings > Phone > Band
- Network type: I chose GSM instead of Auto, as we don't have consumer CDMA in Egypt
- GSM/UMTS Band: I chose the correct band for my provider instead of Auto.
2. Settings > Connections > Advanced Network > Disabled HSDAP
What happened? It worked indoors for a minute, and then stopped working again! Frustrating! So what did I do? I ordered a completely new housing off CNN and will attempt to rebuild the damned thing.
I will update you if I find out anything or reach any results with this phone that I love so much and hate more than anything I have ever hated in my life...

More info!
- During the drive mentioned above, the phone was switching between H, E and G, which means that all three RF chips are, or all components of the whole RF chip if it's one responsible, are working. At one point I got 4 bars of H and call quality was perfect between hand-over failures.
- Before disassembling my phone for the second time, people were complaining about high-pitched static; it can blamed over the mic, the RF (antenna or chip) or humidity levels (which are currently as high as 85%) affecting cellular communication channels.
- Flashing the firmware (R3A Generic UK) and hard-reseting didn't solve the problem.

More Info!
- The battery cover isn't the phone's ground; it's grounded by being connected to four ground points: the mini USB port metallic frame, the GPS/Wi-Fi/Bluetooth antenna ground, a ground point on the main board and the metallic cover over the sensitive RF chips.
- This is definitely an assembly problem. The reception is great outdoors switching between all bands and speeds. On my drive to work today it worked getting G, E, 3G and H all in 4 bars. The signal, however, is completely unstable, jumping from one speed to another. I am more inclinded now to believe that a new housing will fix this problem. Your housing was probably handled poorly at the service centre, which in turn caused this problem.
My advice is to shake them a little bit and see what they will do.

A New Housing didn't fix it!
I purchased a new housing from CNN. It came in good condition. The phone looks brand new now but still no signal. I am sending it in for service. I guess I blew up my Power Amplifiers...
Good luck mate!

melaskalany said:
I purchased a new housing from CNN. It came in good condition. The phone looks brand new now but still no signal. I am sending it in for service. I guess I blew up my Power Amplifiers...
Good luck mate!
Click to expand...
Click to collapse
Same problem haa...
I still waiting for a good news from the service center... I have been waiting for a month..
I wish You a good luck too...

I'm having the same problem. I opened up my phone a few days ago to clean the keyboard. The bottom row wasn't working correctly. Unfortunately after I closed it up again, it wouldn't get any reception (and the keyboard's bottom row was still not working correctly).
So I figured it was the antenna and tried to reposition it. I even removed the rubber layer as described here: http://blog.whitesites.com/How-to-Increase-Reception-on-Sony-Xperia-X1__633958291637656250_blog.htm
Outside I get ok reception, but it's far from stable, inside I get none. And even if I get reception inside, once I pick up the phone, signal drops. So I thought about grounding as well, problem is I even tried rubber gloves and that doesn't solve the problem. I'm afraid replacing the antenna's won't help here and my xperia is dead. Anyone has any other ideas?

Been there too!
I tried the same solution the blog explained. However, I ended up not getting any signal at all. It's only after I purchased a new cellular antenna+buzzer module that the phone started getting an unstable signal outdoors.
Did you notice any small pieces falling off the main board or the housing? It's either a hardware failure or a simple short/open circuit situation that can be fixed in a blink of an eye!

Question
Is there any possible way, hardware or software, to test whether all chips on the main board function properly? I tried the diagnosis tool available here but it doesn't check the chips one by one.

Service Centre
I took my phone to the service centre 6 hours ago. With the new housing on, and new screws that I scored from a secret source of mine, they deemed the phone untouched and serviceable; i.e. it passed for a phone that hasn't been tampered with!
They told me to call back in four days. I will keep you guys updated. Cheers!

I wonder if that'll fix it So to summarize you have:
- new housing
- new screws
- new vibramotor
- new antenna
And those things twice and that fixed it maybe?
I guess it's time for a new phone for me

Vibramotor?
Who said anything about changing the vibration motor? I installed a new antenna + buzzer module; i.e. a new cellular antenna and a new loud speaker (external speaker). The loud speaker is housed within the antenna module. My bad, maybe that part was vague because I never explained it enough.
And yes, it has a brand new housing too. I only installed the lower part though, as the upper part is just fine. Maybe they will fix it man; maybe they won’t I really don't know. I do hope they will fix it though.
I am currently using a backup cheap Nokia and ordered the Sony Ericsson Aspen. If they ever fix my X1 then I can change seamlessly between both phones. If not, then I will just use my X1 as a media/GPS device in my car and an Internet device over Wi-Fi.

Lucky you..... if they can fix yours in a few day... since mine has been in the service centre more than a month, without any news...
they said to me that it will take about 6 week...

What a joke!
The phone remained at the service centre for a week. They called me yesterday, and told me that the phone was fixed and that the total cost was EGP 100 (~U.S. $18). I went over and as soon as I held the phone in my hand to test it, it lost the cellular signal. When placed on the counter, the phone had a constant E signal.
I asked to speak to the manager, who told me that they just reflashed the phone with the latest firmware (Generic UK R3A, which I already had installed). Oh, and before that, he said he was sorry but the phone had a hardware problem and that they don't fix hardware; they only flash firmwares and if that doesn't fix the phone, then the user is pretty much on his own! I refused to receive the phone, so he gave me a refund for my money and promised to have its hardware checked and get back to me in 24 hours!
What a joke, what an f'ing joke! I already regret ordering the Aspen that is due to arrive next week with a friend of mine returning from Paris...

melaskalany said:
The phone remained at the service centre for a week. They called me yesterday, and told me that the phone was fixed and that the total cost was EGP 100 (~U.S. $18). I went over and as soon as I held the phone in my hand to test it, it lost the cellular signal. When placed on the counter, the phone had a constant E signal.
I asked to speak to the manager, who told me that they just reflashed the phone with the latest firmware (Generic UK R3A, which I already had installed). Oh, and before that, he said he was sorry but the phone had a hardware problem and that they don't fix hardware; they only flash firmwares and if that doesn't fix the phone, then the user is pretty much on his own! I refused to receive the phone, so he gave me a refund for my money and promised to have its hardware checked and get back to me in 24 hours!
What a joke, what an f'ing joke! I already regret ordering the Aspen that is due to arrive next week with a friend of mine returning from Paris...
Click to expand...
Click to collapse
OMG...
I do hope that you will get the good news next...

Bad News!
Deep breath... Ok!
Here is the deal: the service centre officially announced that the fault lies within the Mainboard; i.e. my guess that the Radio Frequency (RF) Power Amplifier Chip is toast was correct. They want to charge 90% of the phone's original retail price (which was EGP 4000 = U.S. $700) for a new Mainboard. I replied that that was impossible. They will contact SE's HQ and get back to me on Saturday to see if they can offer any other alternatives.
I guess that is the end of my ride with the X1. I will sorely miss it; it was a great phone while it lasted. Let's hope that the Aspen won't die on me in a year as well...

[Q] Camera, LED, headphones not working. Hardware issues?

My girlfriend's N1 has gradually developed some problems. At first the headphones were not being recognized properly. Then camera stopped working. Now that I've taken a look at it the flash light does not work either. If you call someone, 4 times out of 5 the screen goes blank and you cannot end the call. Sometimes this happens when receiving calls as well.
I was using CM7 before and no additional apps were installed. Tried with or without SD card, rebooting, resetting to factory defaults, putting another ROM, restoring to factory ROM.
The symptoms:
- any camera app starts with a black screen and later throws wait/close dialog
- flashlight apps seem to work but no light is coming out
- headphones do not get recognized, tried 4 brands, compressed air, pushing, pulling, pressing. Not a lint issue.
- immediately after pressing a call I get a black screen which I can come out of by pressing a random combination of keys
I tried moving the camera and LED modules with my finger but nothing happened.
Everything else works: calls, trackball with led, bluetooth, wifi.

I had a similar problem with the flash and camera and it was fixed when I swapped out the main board which also has all the ports your having problems with
Sent from my Nexus One using Tapatalk 2

That sounds unfortunate because the original seller has now closed the shop: site is offline, amazon and ebay products are delisted, does not respond to email.
Even worse, I'm located in Germany and bought the phone here, but I don't really speak the language well enough to contact consumer protection authority and even the HTC support site is all in German. Original box and warranty are in my home country. Sounds like a recipe for disaster.
I've written a mail to HTC support since GooglePhone has closed shop as well.
Since I'm still on a rant, touchscreen has been acting up since day one, upon heating it registers wrong touches, but this is already a known issue.
It was a nice phone while it lasted, but in hindsight I wouldn't recommend it to anyone anymore. It still looks like new fwiw.

locorito said:
I had a similar problem with the flash and camera and it was fixed when I swapped out the main board which also has all the ports your having problems with
Sent from my Nexus One using Tapatalk 2
Click to expand...
Click to collapse
same problem

Hardware
Its hardware issue caused mayb y dropping the N1
so try to replacing ur main board or mayb u can get it repaired if u have a good engineer around u
Thank If my reply helps u ..

Just as an update, the issue with all these phones is the ribbon cable connecting headphone jack, camera, proximity sensor and perhaps [front] speaker. It's probably an easy replacement and the part cost is around 25-40$. The cellphone repair guy said that he has done it a lot of times for this phone type, so it's probably a production/engineering issue.

[Q] Replaced speaker, now no wifi/bt/cell.

I replaced the speaker in my i897 and now I get no signal for WiFi, Bluetooth and cellular service. I pulled the case back off and noticed the smaller gold spring loop that makes contact with the inside of the case in the corner near the camera is broken off. Would this be causing my issue or is the new speaker or something else to blame. Where do I start diagnosing and is there a DYI to fix the broken gold spring piece. (Identical to the one that touches the battery cover but smaller and under the case.
Thanks, I'm not ready to give up this phone.

rogleete said:
I replaced the speaker in my i897 and now I get no signal for WiFi, Bluetooth and cellular service. I pulled the case back off and noticed the smaller gold spring loop that makes contact with the inside of the case in the corner near the camera is broken off. Would this be causing my issue or is the new speaker or something else to blame. Where do I start diagnosing and is there a DYI to fix the broken gold spring piece. (Identical to the one that touches the battery cover but smaller and under the case.
Thanks, I'm not ready to give up this phone.
Click to expand...
Click to collapse
I haven't opened mine in a while but if I remember it right, the connections are right beside the speaker so you most likely damaged it. I can't help you much myself on how to repair it but mobiletechvideo.com might be able to (or even repair it for you). Good luck!

BWolf56 said:
I haven't opened mine in a while but if I remember it right, the connections are right beside the speaker so you most likely damaged it. I can't help you much myself on how to repair it but mobiletechvideo.com might be able to (or even repair it for you). Good luck!
Click to expand...
Click to collapse
The white antenna cable near the speaker appears fine, the new speaker works fine, WiFi works withing 8' of the router. Leads me to believe there is some antenna connection servicing BT/WiFi/cell in one not making a solid connection. Its not the large white cable though.

rogleete said:
The white antenna cable near the speaker appears fine, the new speaker works fine, WiFi works withing 8' of the router. Leads me to believe there is some antenna connection servicing BT/WiFi/cell in one not making a solid connection. Its not the large white cable though.
Click to expand...
Click to collapse
Our phone is known to have bad signal (Wifi, GPS and such) when there's something covering the top of the phone so perhaps there's something interfering near the antenna?

[Q] Wifi not turning on

I bought a galaxy note n7000 from a friend. It has android 4.1.2 installed. build number is n7000XXLSA.
the problem is wi fi doest turn on.I mean whenever i want to switch it on it seems its trying to get on but fails. The green light never shines on it.
The problem i cant understand lies with hardware or software.
Sometimes the wifi gets connected and then it works like a charm. But most of the times no matter how hard i try it never gets turned on. Ive tried factory reset, restart, removing batter and memory card nothing seems to work. I tried wifi fixer app but nothing happened.
I am not very technically aware of rooting, and how to modify it. But i think from what ive learnt is it is caused by updating from ICS to jelly bean 4.1.2
I dont know whether my phone is locked or unlocked, rooted or un rooted cause im totally new with phone.
Please someone guide me how can i rectify this problem, I dont mind taking risk with my phone but wanna know what all should i do to solve wifi issues.
Plus i also would like to update to 4.2.2 kindly let me know step by step starting from basics how should i go about it.
regards

Go to settings and wi-fi and there when you turn on the wi-fi it should show the your network which is remembered and show read something as authenticating obtaining ip addreas and such.. Just select your netwirk once and click on forget and then try to connect again putting in your network key.. To check if you are rooted or not: you must have an app which saya superuser or su.. You can also download root checker app from market to see if you are rooted or not..
Sent from my GT-N7000 using xda app-developers app

I upgraded my android to paranoid android 4.2.2 but the problem is wifi button doesnt turn on. whenever i try to tap it on it slips to off mode.
kindly suggest any remedies
Regards

Wifi never shines green
nashbloom said:
I upgraded my android to paranoid android 4.2.2 but the problem is wifi button doesnt turn on. whenever i try to tap it on it slips to off mode.
kindly suggest any remedies
Regards
Click to expand...
Click to collapse
have xactly same problem...upgraded to jellybean but atill prob is same .plz help

I suggest you move on to stunner rom instead. It has all the features of the Rom you are currently using. Stunner is, if I've got it right, built from parts of PA.
Sent by Tapatalk from my Samsung Galaxy Note.

Solution found
sorry for the long post but this will work
After three months of dealing with the same problem on my GT N7000 as nashbloom i have found a fix to this wi fi problem.
And I mean WIFI problem. this is not a matter of obtaining a connection, this is a problem where the wifi wont switch on at all.
It trys, to switch on (sort of transition phase) than freezes or fails and turns off again.
Just as I was preparing to back up my phone and take it in to samsung the next day I found a post on a you tube clip saying to clean corrosion built up on wi fi antenna.
Desperate, I tried it,
1. remove 9 screws (dont worry they are all the same size) on back and remove cover
2. with a cotton tip/bud wipe corrosion in top left hand corner (looking at the back of the phone)
3. not knowing what a wifi antenna looks like and having seen no corrosion i wiped everything including the cover.
4. i removed a few connectors and put them back in place.
5. put everything back in place and problem was instantly fixed
I did this two days ago but have had one time where the same problem reoccured, otherwise, perfect.
P.S. This is proof that this is a hardware problem not a software one, but i kind of knew that when i changed every wifi setting on the phone several times

will try these today
I will try these today as soon i get home.. i been looking around for a fix.. I hope these will resolve it
atchya said:
sorry for the long post but this will work
After three months of dealing with the same problem on my GT N7000 as nashbloom i have found a fix to this wi fi problem.
And I mean WIFI problem. this is not a matter of obtaining a connection, this is a problem where the wifi wont switch on at all.
It trys, to switch on (sort of transition phase) than freezes or fails and turns off again.
Just as I was preparing to back up my phone and take it in to samsung the next day I found a post on a you tube clip saying to clean corrosion built up on wi fi antenna.
Desperate, I tried it,
1. remove 9 screws (dont worry they are all the same size) on back and remove cover
2. with a cotton tip/bud wipe corrosion in top left hand corner (looking at the back of the phone)
3. not knowing what a wifi antenna looks like and having seen no corrosion i wiped everything including the cover.
4. i removed a few connectors and put them back in place.
5. put everything back in place and problem was instantly fixed
I did this two days ago but have had one time where the same problem reoccured, otherwise, perfect.
P.S. This is proof that this is a hardware problem not a software one, but i kind of knew that when i changed every wifi setting on the phone several times
Click to expand...
Click to collapse

Wifi Goes Off suddenly trying to reconnect
plutarco said:
I will try these today as soon i get home.. i been looking around for a fix.. I hope these will resolve it
Click to expand...
Click to collapse
Two months now with this silly wifi issue. Did this trick help with your phone?
I did everything possible trying to solve this problem but to no avail.
Wiped anything that could be wiped on the inside, replaced the USB port board, but wifi is relentlessly disconnecting at random times.
Any idea?

WIFI
juliobahar said:
Two months now with this silly wifi issue. Did this trick help with your phone?
I did everything possible trying to solve this problem but to no avail.
Wiped anything that could be wiped on the inside, replaced the USB port board, but wifi is relentlessly disconnecting at random times.
Any idea?
Click to expand...
Click to collapse
I found something weird.. when the phone is without the back cover wifi works perfect. when I put it back the wifi goes off. ???? I really do not know was wrong with the phone.. (i do not use it anymore).. the only guess is that the back cover pressure something to the board and disconnect the wifi.. I really do not have a explanation.. take care..

plutarco said:
I found something weird.. when the phone is without the back cover wifi works perfect. when I put it back the wifi goes off. ???? I really do not know was wrong with the phone.. (i do not use it anymore).. the only guess is that the back cover pressure something to the board and disconnect the wifi.. I really do not have a explanation.. take care..
Click to expand...
Click to collapse
I hope what you say is true. I can live without a back cover..
Sent from my GT-N7000 using XDA Premium 4 mobile app

Thank you
atchya said:
sorry for the long post but this will work
After three months of dealing with the same problem on my GT N7000 as nashbloom i have found a fix to this wi fi problem.
And I mean WIFI problem. this is not a matter of obtaining a connection, this is a problem where the wifi wont switch on at all.
It trys, to switch on (sort of transition phase) than freezes or fails and turns off again.
Just as I was preparing to back up my phone and take it in to samsung the next day I found a post on a you tube clip saying to clean corrosion built up on wi fi antenna.
Desperate, I tried it,
1. remove 9 screws (dont worry they are all the same size) on back and remove cover
2. with a cotton tip/bud wipe corrosion in top left hand corner (looking at the back of the phone)
3. not knowing what a wifi antenna looks like and having seen no corrosion i wiped everything including the cover.
4. i removed a few connectors and put them back in place.
5. put everything back in place and problem was instantly fixed
I did this two days ago but have had one time where the same problem reoccured, otherwise, perfect.
P.S. This is proof that this is a hardware problem not a software one, but i kind of knew that when i changed every wifi setting on the phone several times
Click to expand...
Click to collapse
Like everyone here, I was having the problem with the greyed out WiFi and also got some practice with flashing firmwares and doing factory resets, backups and restores, all in vane.
I found this post and decided to give it a try, also checking a YouTube video about how to open the GT-N7000
My phone did not have any corrosion, but after reconnecting, i.e. taking out and plugging in again, all connectors to the main board, the WiFi came back to life. That was two days ago. I cannot say it works like a charm, after a couple of hiccups, I just don't trust this phone anymore and I think I had the greyed icon once yesterday when I tried to switch off and on the WiFi.
This experience led me to believe that there is something with the connectors that got loose after my phone has fallen off my pocket a couple of times. If you wear pants that were not designed to carry phablets, this might happen to you as well.
Anyway, a big THANK YOU to atchya for the idea of opening the phone.
Cheers,

[Possible solution]Follow the link how to clean up the connectors
Yeah above solution works. This Is the only way I got my wi-fi to work. Tried re-flashing Rom (downgraded and upgraded) even re-flashed Radio. Finally cleaned up , unconnected and reconnected cables, so far works fine (no greying out of menus etc.) . Will keep you posed
edit: Open the photos in different tabs to see the antenna connectors, they are tagged you will know exactly what to clean

[Q] the wifi HARDWARE problem fix?

Hi
I have the c5502 with the bluetooth/wifi problem , the repair service told me they can fix it with bridges or smth and the problem will appear again,
First i dont believe them that much i just feel that they wanted me to pay for a new PCB
Question: Is this problem really fixable or should i buy a new one
Someone told me he will reweld the wifi and it is fixed
Note: The problem was temporarly fixed when i press hard on the back next to mic 2, but no longer works

Judging by your description, it might be that the WiFi/BT chip isn't attached well - some of the balls in the BGA (Ball Grid Array, look it up) have cracks that prevent proper contact.
If this is indeed the case, it can be fixed by reflowing or just directed heating of the chip area to the melting temperature of the soldering alloy.
However, this might not be the problem - and if it isn't, there might be a host of reasons for it.
You need to correlate the location of the WiFi/BT chip and the pressure you're applying.

Jack_R1 said:
Judging by your description, it might be that the WiFi/BT chip isn't attached well - some of the balls in the BGA (Ball Grid Array, look it up) have cracks that prevent proper contact.
If this is indeed the case, it can be fixed by reflowing or just directed heating of the chip area to the melting temperature of the soldering alloy.
However, this might not be the problem - and if it isn't, there might be a host of reasons for it.
You need to correlate the location of the WiFi/BT chip and the pressure you're applying.
Click to expand...
Click to collapse
wow thank you, i looke it up it should be simple
could you tell me what is the bridging he talked about ?

He might be suspecting something else.

synos_x said:
Hi
I have the c5502 with the bluetooth/wifi problem , the repair service told me they can fix it with bridges or smth and the problem will appear again,
First i dont believe them that much i just feel that they wanted me to pay for a new PCB
Question: Is this problem really fixable or should i buy a new one
Someone told me he will reweld the wifi and it is fixed
Note: The problem was temporarly fixed when i press hard on the back next to mic 2, but no longer works
Click to expand...
Click to collapse
I have fixed my WiFi but bluetooth is still dead.
The WiFi problem is actually a poor connection between two boards inside the phone. There's two boards that need to make contact but because they aren't hard-wired together they rely on a touch contact. There's a shiny foil square on top board (main pcb) that has to contact conductive square on lower board. The shiny foil square looks like it gets compressed over time which is why the wifi only fails on some phones after a while. Some phones will be fine but I think it's just poor engineering to rely on a soft touch contact!!
When you push in the back against the mic you are pushing the boards together to make contact.
I fixed by placing some of the screen adhesive (which I had plenty of after removing screen) underneath the spacer pad that is under the bottom board. This forces the boards together and keeps the WiFi going.
However, I thought this would fix bluetooth but no such luck. Perhaps there's another connection that's not right somewhere?

so i sent it to a repair center sony told me the board is fried, i dont know what this means , everything works except for wifi bluetooth, they are both working until now, i think they heated the wifi part on the board

Silverdace said:
I have fixed my WiFi but bluetooth is still dead.
The WiFi problem is actually a poor connection between two boards inside the phone. There's two boards that need to make contact but because they aren't hard-wired together they rely on a touch contact. There's a shiny foil square on top board (main pcb) that has to contact conductive square on lower board. The shiny foil square looks like it gets compressed over time which is why the wifi only fails on some phones after a while. Some phones will be fine but I think it's just poor engineering to rely on a soft touch contact!!
When you push in the back against the mic you are pushing the boards together to make contact.
I fixed by placing some of the screen adhesive (which I had plenty of after removing screen) underneath the spacer pad that is under the bottom board. This forces the boards together and keeps the WiFi going.
However, I thought this would fix bluetooth but no such luck. Perhaps there's another connection that's not right somewhere?
Click to expand...
Click to collapse
Hi,
Can you please let me know that how did you open that phone? did you opened it by your self?
Is it possible to open from back side only?
Do you have pictures for wifi solution which you described above?

nikunjnandaniya said:
Hi,
Can you please let me know that how did you open that phone? did you opened it by your self?
Is it possible to open from back side only?
Do you have pictures for wifi solution which you described above?
Click to expand...
Click to collapse
Hi sorry but don't have phone any more. Don't think I have pictures any more either.
You cannot open from back side only. You have to take off screen. Look on youtube to see how it's done.

Silverdace said:
Hi sorry but don't have phone any more. Don't think I have pictures any more either.
You cannot open from back side only. You have to take off screen. Look on youtube to see how it's done.
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Hi,
Thanks for your reply. Currently i had press with pressure back side and it's working for me.
But let say if i open phone as shown in youtube then do i need anything extra to assemble my phone again?
Thanks that you have write your wifi issue here and it will help others.

nikunjnandaniya said:
Hi,
Thanks for your reply. Currently i had press with pressure back side and it's working for me.
But let say if i open phone as shown in youtube then do i need anything extra to assemble my phone again?
Thanks that you have write your wifi issue here and it will help others.
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Click to collapse
Yes, you'll need the screen adhesive stuff. Can find on eBay or Aliexpress or Witrigs etc.

synos_x said:
Hi
I have the c5502 with the bluetooth/wifi problem , the repair service told me they can fix it with bridges or smth and the problem will appear again,
First i dont believe them that much i just feel that they wanted me to pay for a new PCB
Question: Is this problem really fixable or should i buy a new one
Someone told me he will reweld the wifi and it is fixed
Note: The problem was temporarly fixed when i press hard on the back next to mic 2, but no longer works
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old thread but just in case some zr user are still searching for an answer
there is a chip on main pcb which controls wifi and bluetooth, but sony didn't soldered it correctly and thus it needs pressure to make connections with pcb.
Only permanent solution is to apply heat on that chip ( after disassembling pcb from phone ) and then it will work for forever.
My phone's ( zr ) wifi bluetooth and nfc wasn't working, so i dissembled it and took the pcb to a laptop repair shop and told them to apply heat on that chip to solder it correctly ( as i don't have that instrument which is used to apply heat on small point ), and after that it is working without any issue. :highfive:
Note:- be carefull while removing screen as it is very fragile and will brake easily if not handled correctly ( yes i broke my screen and using an after market now which costed me Rs1800 ( for full folder ), i was lucky to still find its screen .

Saw Sooper diff DDI dijauhkan I'd do so