Database Develop

[Q] Network and SMS working, call is mute for me and other person

A few weeks ago my phone started to have a problem on calls. Sometimes everything works properly (usually when I just turn on the phone).
BUT, after first call, or a few seconds, the phone complete call, starts counting the call time, but I can't hear anything and other side also can't hear me.
The network and the messages are working fine.
I have already installed several ROMs, originals and custom ... the problem persists.
Has anyone experienced this? Or has any idea what problem is this?
Thanks!

you are not the first and not the last. I'm into this too. i think it's a hardware issue. I've tried everything, even this from S3, I opened the phone but I can't find the corespondent chipset. Si if someone will look into this and point to the chipset to press, I'll test it

tofanpc said:
you are not the first and not the last. I'm into this too. i think it's a hardware issue. I've tried everything, even this from S3, I opened the phone but I can't find the corespondent chipset. Si if someone will look into this and point to the chipset to press, I'll test it
Click to expand...
Click to collapse
This is hardware issue and some people from http://4pda.ru reporting successful repair.
I can only suggest, how to avoid the problem.
Aviod overheating, especially when flashing new ROM. Do it in cool place with battery cover open and do not close, until "Android is upgrading" message has gone.

can you explain/link the repair method? (point me to the 4pda topic and I'll try gtrans)
So if I flash the rom in a cold place the problem will be gone until the first overheat of the phone, which will be with the first over 5 min call, and that means it is a temporary solution until MB replaced?

Решил проблему со звуком при звонках у своего Active путём прогрева соседнего с предыдущим перепаянным (WCD9310) чипа "325A",
Translated:
Problem solved by heating (soldering) chip near previously replaced 325A
Another post explains, that chip was replaced because it was overheated and burned because missing experience.

yep. i think that right. I just found this on t-mobile support forum.
For those that haven't had any luck trying various software, firmware, setting fixes, be aware that there is a hardware problem related to this.
If you have all of the following symptoms:
-no dial (ringing) tone in the earpiece when connecting
-phone call connects but mic doesn't work
-phone call connects but no audio for both parties (where neither parties can hear)
There may be either a faulty 325A audio switch IC chip, or the solder points on the 325A chip is bad. The chip is located on the back of the motherboard, if your looking at it with the volume switch on the left with the two extension for the headphone jack on the top. You can find the chip if you follow the right headphone jack extension straight down and it's directly above the silver heatshield (basically the first IC chip you run into following the extension), it should say 325A on it. If you have a phone repair store nearby with a hot air rework station, they can reflow the solder and see if it helps or they might have to remove the chip and reball the solder on the chip. Or you can simply have them replace the chip with a new one, new chips cost like 9+ bucks, plus labor. Or if you're really brave (or stupid), you can buy a hot air soldering station with a small tip for like 60 bucks and try and reflow it yourself, but I'd advise against if you don't have experience soldering IC chips. If it's still under warranty, obviously get a new replacement handset because no amount of fiddling with software, firmware or settings will fix a hardware related problem.

Missing incall sound FIXED!!!
Following this tutorial I removed the mainboard and took it to a good friend who did a reflow to 325A chip. Reassembled the phone and after 2 calls the bug was on again. Reopened the phone and my friend did another reflow to WCD9319 chip (see picture in post 5). Since then no more missing sound. I played some games and listen some music from sdcard to overheat the under-flash zone (when there was heat, sound was not working) but the heating never happened again.

tofanpc said:
Missing incall sound FIXED!!!
Following this tutorial I removed the mainboard and took it to a good friend who did a reflow to 325A chip. Reassembled the phone and after 2 calls the bug was on again. Reopened the phone and my friend did another reflow to WCD9319 chip (see picture in post 5). Since then no more missing sound. I played some games and listen some music from sdcard to overheat the under-flash zone (when there was heat, sound was not working) but the heating never happened again.
Click to expand...
Click to collapse
Thank you, reflow the two chips and no more sound problem with call for two days now.
Sent from my SGP321 using XDA Free mobile app

d8389 said:
Решил проблему со звуком при звонках у своего Active путём прогрева соседнего с предыдущим перепаянным (WCD9310) чипа "325A",
Translated:
Problem solved by heating (soldering) chip near previously replaced 325A
Another post explains, that chip was replaced because it was overheated and burned because missing experience.
Click to expand...
Click to collapse
Thank you very mutch. Its really work.

Rear camera turn black when use it

Whenever I try to use the rear camera the display turns black while only showing the HUD. The HUD works fine, but the camera doesn't work at all. Nothing is blocking it either.
When switching camera modes (to manual mode for example), an error pops up saying that the "camera is not available"
IMPORTANT NOTE: The front facing camera is working perfectly fine.
Things I tried to do (aside from shipping it for repair):
1. Android repair via the PC companion software
2. Internal reset
3. Safe mode
4. Clearing cache files for the built-in camera app
5. Installing an alternative camera app (the built-in one was disabled)
6. downgrade and upgrade
7.change camera for new one (tested)

I had same situation with regular Z3. Someone brings it to service where I'm working and my first think was camera fault but changing camera didn't fix it. Near camera connection You can see some small capacitors, we call it filters. It looks like capacitors but it's soldered not only on opposite sides but 2 points on both sides. In regular Z3 there was 5 elements like this to change and after that camera starts working. I don't remember how exactly it's made in Z3c but it's really possible that it's the same issue and same way to fix it.
One more thing, if You can check one one more camera to exclude camera itself cause most issues like this are caused by faulty camera. I had many phones (most Z1 and Z1c) with this issue and changing camera always was the solution.
Good luck.

Same Here. Need help too.
Sent from my D5803 using XDA Free mobile app

I have three cameras and two z3c, I interchange camera and phone and always the same result

At this moment I don't have any Z3c to disassembly (except mu own but under warranty) to check where those capacitors are but if You could take a picture of camera connector on motherboard and near area I can mark which one should change.

@Chamelleon

Main camera not working
I have the same issue with my Z3 compact. The issue started happening on the 11th month of my one year warranty, I sent it for repair (14 business days y + shipping time back and forth). It came back with the same issue. Sent it back right away. After another three weeks without my phone, I got it back. Guess what? EXACT SAME ISSUE!
I called their support line explaining what happened, the guy told me that there is nothing they can do about it since my warranty expired. Of course they didn't have in consideration that I sent my phone before it expired and it took about seven weeks back and forth. There wasn't any sort of damage on my phone, was never dropped or damaged in any way, I never submerged it even if in theory, that would be ok. The report said "it has reviewed the functioning of the unit, unfortunately the defect is in the PCB so it is not able to undergo repairs to it."
The guy on the phone told me what he thought the report meant. It means there is damage on the main board(not caused by me) and the one year warranty manufacturer warranty department won't repair it. Maybe, if I had bought the 2 year "extended" warranty, they could do something about it. I asked if the issue is that my one year warranty was expired or if it is something that they just don't fix unless you get the "extended" warranty. He couldn't answer me and the only thing he said was "is there anything else I can help you with?"
From what I understood, there are two completely different departments, the one year manufacturer warranty that only cover some things. Not even sure what, because if it's broken screen, water damage or any physical abuse, they won't fix it. If it's a problem with the main board or PCB, they won't fix it either. It is a mystery to me what gets fixed in that department. The other department is the 2 year extended warranty. I'm not sure what they are willing to fix there, but from what they guy on the phone told me, it's more than the one year regular warranty.
Long story short, after two trips to FedEx, at least 8 hours total on phone calls, more than 7 weeks without my phone, I ended where I started. Sorry Sony, never again. Worst customer support I have ever experienced.

At this photo I can see only 4 of this capacitors and marked it, maybe it should be four or one I missed cause quality. Anyway regular Z3 has 5 like this and after changing all 5 camera start working again. You can desolder it from most Sony phones, I used capacitors from MK16 (Xperia Pro). So find some Sony board with capacitors like this and ask someone with good hot air solder station (if You don't have one) to change it.

Any news to this problem? I bought used Z3C with black rear camera problem because it was cheap. (Yes, the front facing camera is working perfectly fine). So far I have only tried software fixes and obviously they didn't help. I ordered new camera module from ebay and I'm now waiting for it. Has anyone tried soldering new capacitors if the new camera module doesn't help?
EDIT: Here is another thead with same problem: http://forum.xda-developers.com/z3-compact/help/rear-camera-hardware-detected-black-t3231509

As I said I've done it only in regular Z3 but If You gonna try give me some info is this solution is also working in Z3c case.

Chamelleon said:
As I said I've done it only in regular Z3 but If You gonna try give me some info is this solution is also working in Z3c case.
Click to expand...
Click to collapse
I'm still waiting for new camera module. If the new module is not working I will try soldering new capacitors. I will keep you up to date here .

Any news??

Completely forgot to post this, hope it help someone. I made the same thing with black camera on my Z3c. After I broke audio port in my Z3c and had to send it to warranty I took my gf phone, Z3c also. I restored my TWRP backup to her phone and all except camera was working. Camera was completely black but only main, front was OK. After that I was afraid that it's another hardware problem like Yours but after reflashing to stock problem gone. I repeated it few times to check if I'm right and I was. After flashing backup from another phone even without TA and Kernel backup there is a problem with camera.
So I was wrong saying it's only hardware problem. If anyone still has this issue and didn't reflashed his phone check it first.

@Chamelleon yes it's somehow a software problem (if we could say that ). For me i did fix it.
I did a Nandroid backup for my black Z3 compact (camera works properly) an restored it on my new White Z3 compact (also camera woks fine). after restoring the white z3c rear camera shows black screen, the front one is good.
=> i did a format factory reset : didn't work.
=> flashed a TFT file : didn't work.
=> flashed a D5803_23.4.A.1.232_Customized FR.ftf : IT WORKS !
and then i remembered that my phone was from "SFR" , a french network provider.
i hope this helps also

Edit: too new account, would be nice if a mod unlocks the posting of the direct image links and fixes the links - I think they are useful as this is a common problem and i already invested hours translating russian and documenting my research nobody else should have to do it
for me it was a hardware problem after dropping it.. I even changed the camera module.
Did some reseach, russian sites have some input:
Layout1: directupload.net/file/d/4472/9andayji_jpg.htm
Layout2: directupload.net/file/d/4472/vzvgbqqo_jpg.htm
It was loose, but when i tried to push it down with a hot metal to "solder" it, at some point it jumped away and was lost because it is so tiny!
Missing part: directupload.net/file/d/4472/qmut35qt_jpg.htm
The russian site suggest this soldering of bridges, however its not clear to me if they mean one of this electronic pieces (4pins each) or also the lower one.
Russian: directupload.net/file/d/4472/ag43kmda_jpg.htm
The question is now how these (likely) filters (because so close to the camera have to be bridges, it seemed to have worked for some russians:
Pins: directupload.net/file/d/4472/k86j53hr_png.htm
Not sure if there are 4 indipendend pins or if for those small footprints of electronic devices they use only the edges and then they have the same signal.
I was not able to see any text written on those two things, however i didnt have any magnifying glass.

basmok said:
Edit: too new account, would be nice if a mod unlocks the posting of the direct image links and fixes the links - I think they are useful as this is a common problem and i already invested hours translating russian and documenting my research nobody else should have to do it
for me it was a hardware problem after dropping it.. I even changed the camera module.
Did some reseach, russian sites have some input:
Layout1: directupload.net/file/d/4472/9andayji_jpg.htm
Layout2: directupload.net/file/d/4472/vzvgbqqo_jpg.htm
It was loose, but when i tried to push it down with a hot metal to "solder" it, at some point it jumped away and was lost because it is so tiny!
Missing part: directupload.net/file/d/4472/qmut35qt_jpg.htm
The russian site suggest this soldering of bridges, however its not clear to me if they mean one of this electronic pieces (4pins each) or also the lower one.
Russian: directupload.net/file/d/4472/ag43kmda_jpg.htm
The question is now how these (likely) filters (because so close to the camera have to be bridges, it seemed to have worked for some russians:
Pins: directupload.net/file/d/4472/k86j53hr_png.htm
Not sure if there are 4 indipendend pins or if for those small footprints of electronic devices they use only the edges and then they have the same signal.
I was not able to see any text written on those two things, however i didnt have any magnifying glass.
Click to expand...
Click to collapse
So I changed my camera because I thought it was a hardware failure (tried every other method before: going back to stock, wiping camera files etc.) and it STILL is black. Did you have any success with your camera?

mrfrantastic said:
So I changed my camera because I thought it was a hardware failure (tried every other method before: going back to stock, wiping camera files etc.) and it STILL is black. Did you have any success with your camera?
Click to expand...
Click to collapse
Try flashing stock ROM based on your country as i mentioned up.

mrfrantastic said:
So I changed my camera because I thought it was a hardware failure (tried every other method before: going back to stock, wiping camera files etc.) and it STILL is black. Did you have any success with your camera?
Click to expand...
Click to collapse
Me not (also changed the HW cam), the guys on the russian site yes (even with other similar sony).
Just check if there is something loose, maybe you are lucky and its a software problem *fingers crossed*. To me it happend exactly after dropping (and changing the screen which went without problems) so I was quite sure its HW based.

basmok said:
Me not (also changed the HW cam), the guys on the russian site yes (even with other similar sony).
Just check if there is something loose, maybe you are lucky and its a software problem *fingers crossed*. To me it happend exactly after dropping (and changing the screen which went without problems) so I was quite sure its HW based.
Click to expand...
Click to collapse
Hi basmok,
First off thanks for the research and for the pictures!
I have a similar story, phone was dropped, rear camera won't work, tried different ROMs without any luck then took phone apart and saw that one of the four tiny capacitors
just fell off and now it's MIA...
The last pic from your post (directupload.net/file/d/4472/k86j53hr_png.htm) which I assume shows the soldering of the bridge doesn't seem to work...
Do you still have that pic?
Also did you make any progress on the camera fix or gave up?
Thanks,
Ati

AtiGala said:
Hi basmok,
Do you still have that pic?
Also did you make any progress on the camera fix or gave up?
Thanks,
Ati
Click to expand...
Click to collapse
You were lucky, they were already in the recycle bin and deleted on the camera. Best I could do picturewise, i dont have a macro lens. Here we go, added all to imgurl so hopefully they survive longer: http://imgur.com/a/Of1DY
And no, didnt make any progress as i dont know what component they are. Normally all components have lasered some code but not sure if its just too tiny for my eyes or if they dont have it. I was a bit unlucky as i didnt have a soldering tool, so i tried it by pushing the pin down with a paperclip which i headed with a lighter --- well it jumped away and was not the best approach

Moto service center f-kd up my phone? What happened here?

Bought my phone in November and until May it was working perfectly, I thoroughly enjoyed the phone.
During the installation of the April security patch my phone got stuck and I had to reboot it.
As a result, Android didnt work anymore. Even after hard resetting the phone was super slow and full of errors.
I sent it back to an official Moto service center; so they could reset the firmware.
When I finally received my phone back, I notice there were marks on the back-glass that werent there before.
the "repair paper" said that "broken parts have been replaced".
The phone works quick again, except that the loudspeaker cracks really bad on 80% volume... and when calling I can hear a very soft but subtle abnormality in the speaker as well.
I also notice a small delay with the fingerprint scanner, which wasn't there before.
When I look into the android recovery menu I can see that this phone has a different serial number than the one I sent to them.
- Do you also think they gave me someone elses phone? Because my loudspeaker didnt crack at all at high volume.
- Is this legal ?
Simply repairing android doesn't require opening up the phone to "replace the motherboard", right?

Seems like they had to replace mainboard. Which is logical, because Android errors might have been a result of damaged memory.
At least this would explain serial number change.
And the speaker problem might be a result of incorrect assembly after the repair. (this happened once to me, when I received my Lumia 930 after the repair, headphones jack was not working correctly. It did not react when headphones were connected - fortunately, when I started to move the plug in the socket, the socket "jumped in" into its place and it started to work again)
I'd return the phone and request them to fix the problems you described. I don't think much more can be done on the discussion forum

Question Redmi 9T suddenly blackout after rebooted accidentally

Help me please. Just now my Redmi 9T doesn’t want to open after I accidentally rebooted it after charging. I already tried the long press power button also the volume up and down.

Is it overheated?
Will it power on with the charger connected?

It’s not over heated. No, the power won’t open even if I tried to charged it again. My friends said that it’s dead boot and idk what that is.

Sounds like a mobo failure.
Maybe someone here has seen this before.

Someone said from a group that it’s a system failure update.

maeyyang said:
Someone said from a group that it’s a system failure update.
Click to expand...
Click to collapse
Bricked? Damn...
I don't update my 10+... now you know one of the reasons why.

You may have no other option but to bring that thing to a service center near you

@maeyyang can I ask if you updated its system prior to the incident?

I also am encountering this problem you posted. How's your phone now?

I also facing this issue.. any updates on your device?

Delabytes said:
I also facing this issue.. any updates on your device?
Click to expand...
Click to collapse
brought it to the nearest service center, they said i have to wait for 1-2 months :/
they said that it's a mainboard's problem

I search videos on YouTube. The same issues occurred on Poco M3. They said that the issue is on the main board, specifically the power IC.The solution is just reheating the soldered IC on the board.
Here is the sample video:

Delabytes said:
I search videos on YouTube. The same issues occurred on Poco M3. They said that the issue is on the main board, specifically the power IC.The solution is just reheating the soldered IC on the board.
Here is the sample video:
Click to expand...
Click to collapse
That's a BGA. The heat has to be precisely controlled with a hot air station by someone that knows what they're doing. Too little heat/time nothing happens, too much you destroy it and the PCB maybe too.
These are the hardest SMs to deal with.
There's no guarantee that that's the problem and no way to inspect it without a factory test rig*.
All the contacts are underneath. It maybe another SM component that has the cracked solder joint. There are a lot of components in the power section. That maybe a common problem but not the only one...
*you can try gently pressing down on the chipset to see if it triggers an event.

I think it's better to just take it to the service center for the mainboard replacement and I heard about users who did the same method in the video had recurring problems after doing that.

Opening the back cover of the handset also voids the warranty and that's really bad.
derunheimlich said:
I think it's better to just take it to the service center for the mainboard replacement and I heard about users who did the same method in the video had recurring problems after doing that.
Click to expand...
Click to collapse

Pixel 4 XL System UI keeps stopping and other things

FYI: I already posted the same thing on r/GooglePixel, it can be found here:
- Sometimes on startup the phone displays that System UI isn't responding, and at other times System UI actually stops, showing no status bar and a black homescreen background. The phone proceeds to soft-restart and the problem persists. This happens even after I factory reset the phone, either through settings or through recovery mode. I tried re-installing the OTA update using ADB and a .zip file from here.
- Sound isn't working, neither the earpiece nor the bottom-firing are making any noise.
- When resetting the phone in recovery mode, I noticed this message:
E:can't send spi message try again
yet the reset supposedly happens without problems. I suspect this to be a security thing and this could be a main cause of my issues.
- I bought this phone as a spares and repairs item for cheap, that might be a dead giveaway to how screwed up it is
- It's on Android 12, the November 2021 update to be specific.
- Boot time in general is long considering the age of the phone
My main worry as of now is whether this is a software issue or a hardware issue. It would be great if this can be fixed through software like downgrading the OS perhaps.Sorry if this post is a bit long, I just wanted to document it as well as possible for anyone who is in a similar situation.
HELP.
Update:
Turns out that even flashing a full image instead of OTA doesn't solve the issue. I tried Android 10, 11 and 12 and used both manually downloading the image and flashing it through my computer's terminal, and using the Android Flash Tool online.One thing that did kinda help is changing the wallpaper from the stock live pixel 4 one. That removed the "SystemUI isn't responding" message. But the bootloop still occurs after I put the phone to sleep.

Sounds like a mobo failure... sorry.
A custom rom might bypass the area of damage... or not.
With the millions of semiconductor junctions alone it never ceases to amaze me these devices are as reliable as they are.

blackhawk said:
Sounds like a mobo failure... sorry.
A custom rom might bypass the area of damage... or not.
With the millions of semiconductor junctions alone it never ceases to amaze me these devices are as reliable as they are.
Click to expand...
Click to collapse
Guess this phone might be completely screwed up after all...

ukasa said:
Guess this phone might be completely screwed up after all...
Click to expand...
Click to collapse
Take a look inside. Make sure the battery has enough capacity to meet power requirements.
Depending on the phone sometimes a failed (or wrong part) C port PCB can cause bizarre behavior.
Look for bad contacts on the ribbon cable connectors, solder cracks, etc.
-Gently- flex the mobo, chipsets while booted to see if you can provoke it. A pencil eraser works well.
Unfortunately the BGA chipsets solder joints are impossible to inspect, use care flexing near them!
Look for mistakes from previous repairs.
Make sure all ground pathways are good, some devices use unconventional methods like the frame rail or even a slightly longer through screw.