Ghost in my phone:( - Sony Xperia Z Ultra

Hello Good People,
Can someone please share some insight here. My issue is that every now and than my phone acts as if it is being controlled remotely. Home screens progress to the next screen, apps will open and close, widgets resize themselves or close, the notification pull down menu is goes up and down.
When this happens it all happens back to back within seconds and I cannot stop it. All I can do is do a hard reboot.
Any solution or tips as to what is going on? I have tried different ROMS and yet it has been known to happen again.
T.I.A.

Mine does it while charging and using the phone. Perhaps because of the lack of proper ground a charge builds up and starts "ghost click".
Its the expected reaction because the touch panel is a "capacitive" type. This model has support for a pen with stock rom. So there might be that the sensitive threshold is set too high to what is optimal when charging?
You can change this setting by editing a file. (that's for another day).
For me it can be minimized for a while by turning off the screen and swiping the whole palm over the screen and downwards. Like you give the charge to go somewhere with the largest possible surface area.
If I remember this right I can recall that SONY had a picture showing how the phone was designed.
It was made part of nylon, glassfiber and magnesium...
Nylon and copper is an excellent material that gain negative charge, aluminum and glass that can gain positive charge.
Magnesium mold is an alloy with part aluminium and other neat stuff.
ah found it:
http://blogs.sonymobile.com/2013/09...rlds-slimmest-full-hd-smartphone-infographic/
What I am saying is that the materials are there to create ghost clicks. Its not a hardware failure. I think it is only the interaction of the material the designers desided to use for this device.

SÜPERUSER said:
Mine does it while charging and using the phone. Perhaps because of the lack of proper ground a charge builds up and starts "ghost click".
Its the expected reaction because the touch panel is a "capacitive" type. This model has support for a pen with stock rom. So there might be that the sensitive threshold is set too high to what is optimal when charging?
You can change this setting by editing a file. (that's for another day).
For me it can be minimized for a while by turning off the screen and swiping the whole palm over the screen and downwards. Like you give the charge to go somewhere with the largest possible surface area.
If I remember this right I can recall that SONY had a picture showing how the phone was designed.
It was made part of nylon, glassfiber and magnesium...
Nylon and copper is an excellent material that gain negative charge, aluminum and glass that can gain positive charge.
Magnesium mold is an alloy with part aluminium and other neat stuff.
ah found it:
http://blogs.sonymobile.com/2013/09...rlds-slimmest-full-hd-smartphone-infographic/
What I am saying is that the materials are there to create ghost clicks. Its not a hardware failure. I think it is only the interaction of the material the designers desided to use for this device.
Click to expand...
Click to collapse
I would agree with you, I remember my phone used to have ghost touches with certain usb cables. Try a different cable if it is occurring while it is charging.
If not, do you have a screen guard on?

mofoahh said:
I would agree with you, I remember my phone used to have ghost touches with certain usb cables. Try a different cable if it is occurring while it is charging.
If not, do you have a screen guard on?
Click to expand...
Click to collapse
Any cable does the same thing. Received three SONY EC450 cables in the mail the other day.
The charger used today is a a bulk order of Samsung eta-p10x because of the removable plug so that I can put any longer C7 cable for long distance from the outlet. I do have a front+back glass panel.
It can be related to ghostclicks because I dropped the phone strait on the asphalt a month back. Luckely with a battery case taking the hit. But the glass is shattered. Two days after I replaced the glass..............
However ghost clicks have occured to and from during the three years time I have had this device. When charging.
Worth notice is that I have removed the asf sheet.
I am aware that the tempered glass isn't just recycled glass molded thin with a silicone residue on one side. There are metals and other possible conductive and charge holding ingredients mixed in the mass. Not to mention the most common sale argument: "HD clear visibility" what many sellers advertises their product to give you. This also has some fact in the paper...can't remember what they use for that at the moment. If it was a mineral or whatever.

Thank you SUPERUSER and mofoahh for the response.
Yes I do have a screen protector on the device. Weird that most of the time it happens when the usb cable is connected to the computer. I was getting freaked out as I thought someone might have been accessing my device remotely. I will get another charging cable.
Thank you again for the informative and technical insight, much appreciated!

You can check your touchscreen's responsiveness using an app called YAMTT:
https://play.google.com/store/apps/details?id=com.rn.yamtt
My phone has ghost or phantom touches all over the place.

PamelaGirl said:
Thank you SUPERUSER and mofoahh for the response.
Yes I do have a screen protector on the device. Weird that most of the time it happens when the usb cable is connected to the computer. I was getting freaked out as I thought someone might have been accessing my device remotely. I will get another charging cable.
Thank you again for the informative and technical insight, much appreciated!
Click to expand...
Click to collapse
If you are worried that someone is tapping your phone you can monitor the network with wireshark and dump a log every day. And use a keylogger. Or/and run catlog with dump at the end of every day.
Or to do this without any suspension from the hacker, run a man in the middle proxy to your computer. Have all traffic dumped there and you can review what's happening every now and then.
If you find anything suspicious then the first thing to look at when it comes to hacking is DNS servers. Google it.

electrical grounding issues.
change the charger.

tsiros said:
electrical grounding issues.
change the charger.
Click to expand...
Click to collapse
In general it is the recommended choice.

Related

Une Bobine (Kickstarter Project)

This Kickstarter project is about to ship:
http://www.kickstarter.com/projects/fusechicken/une-bobine-for-people-who-love-iphone
One of the devices that was tested was a Note, and it performed flawlessly. I backed the project, and will give my review once I get it. Really looking forward to it - works on both desk/countertops as well as in your car.
Be careful when adjusting it, could really bend or break your ports. Otherwise it looks like a cool product. Could see it being great in the car.
Sent from my SAMSUNG-SGH-I717 using Tapatalk 2
welchertc said:
Be careful when adjusting it, could really bend or break your ports. Otherwise it looks like a cool product. Could see it being great in the car.
Sent from my SAMSUNG-SGH-I717 using Tapatalk 2
Click to expand...
Click to collapse
For sure. It looks like they made a nice, fat base for the mini USB connector to rest on. Hopefully it will support a good deal of weight. Supposedly it will even hold it in landscape, which I am cautiously optimistic about.
That does look pretty cool. As the others have said, the microusb port is such a shallow port, it may not provide a lot of support if any when adjusting, or if set at an angle of any sorts. Be curious to hear your review when you get it!
Im not impressed. Micro USB ports arent designed to hold weight.
jimmer411 said:
Im not impressed. Micro USB ports arent designed to hold weight.
Click to expand...
Click to collapse
The port doesn't hold the weight. The base does. Same concept as a dock.
meatlocker said:
The port doesn't hold the weight. The base does. Same concept as a dock.
Click to expand...
Click to collapse
I watched the videos, I dont see where your getting the idea that the base holds the weight. They only show a glimpse of the iphone connector in one of the videos and it doesn't look any different from my ipad2 cable.
I would love to see a Note held horizontally via USB. Its one thing to position an iphone in every position since the port is 100x more secure and locks to an extent.
This has no base. Your USB port will support the entire wieght of the phone. Won't be long before USB port is loose and ceases to function.
By 'base', I mean 'connector plug'. The USB port is on a large plug which distributes the weight across a larger area than if your phone sat on just the cable end. Still, small port, certainly not made to be jostled around on. I bought mine for my desk, so should be fine. Again, more details when I get the thing.
Sent from my SAMSUNG-SGH-I717 using xda premium
meatlocker said:
By 'base', I mean 'connector plug'. The USB port is on a large plug which distributes the weight across a larger area than if your phone sat on just the cable end. Still, small port, certainly not made to be jostled around on. I bought mine for my desk, so should be fine. Again, more details when I get the thing.
Sent from my SAMSUNG-SGH-I717 using xda premium
Click to expand...
Click to collapse
From what I'm seeing that would only be true if the phone were completely balanced at a 90 degree angle otherwise much of the weight is actually distributed as shear stress against the inside of the micro USB plug which is not good.it needs some kind of backplate to cradle with.
cityhunterxyz said:
From what I'm seeing that would only be true if the phone were completely balanced at a 90 degree angle otherwise much of the weight is actually distributed as shear stress against the inside of the micro USB plug which is not good.it needs some kind of backplate to cradle with.
Click to expand...
Click to collapse
I've asked Jon Fawcett, creator of Une Bobine, to drop by this thread and comment on concerns. I think they are all valid.
Hey all. Meatlocker sent me an email to address your concerns. I'll give some info here, but please feel free to ask more questions of me.
We made 2 substantial changes to the standard details around the micro connector that are intended to resolve the issues with all of the weight on the connector. First, our connector housing for the micro is about the same width as a standard iphone cable. The extra width spreads the weight of the phone to a greater area, which places less weight on the connector itself. Also, if the phone is tilted slightly, the phone body will hit the connector housing and stop the phone from putting additional sideways strain on the connector.
The second thing we did was to make replaceable caps on the housing end. These caps adjust the space between the connector body and the tip of the connector. This essentially adjusts how far out the connector comes. These allow us to reduce or remove the gap between our housing and the body of the phone so that the 2 items listed above are as good as possible. We have 3 caps designed to adjust this spacing to keep the phone tight in position. We also have one cap with a right angle bracket to assist with some side-port phones. And we have another cap that leaves a small portion of the traditional micro end sticking out that will let it fit into cases. Each device comes with all 5 caps.
Of course, these won't solve every phone and every usage. But we have tested with 30 different androids, windows, bb's, and feature phones and these have made the difference for most of them. Also, we don't recommend adjusting the position of the phone while it is connected to the cable except for small amounts to get it to the exact right position.
jonfawcett said:
Hey all. Meatlocker sent me an email to address your concerns. I'll give some info here, but please feel free to ask more questions of me.
We made 2 substantial changes to the standard details around the micro connector that are intended to resolve the issues with all of the weight on the connector. First, our connector housing for the micro is about the same width as a standard iphone cable. The extra width spreads the weight of the phone to a greater area, which places less weight on the connector itself. Also, if the phone is tilted slightly, the phone body will hit the connector housing and stop the phone from putting additional sideways strain on the connector.
The second thing we did was to make replaceable caps on the housing end. These caps adjust the space between the connector body and the tip of the connector. This essentially adjusts how far out the connector comes. These allow us to reduce or remove the gap between our housing and the body of the phone so that the 2 items listed above are as good as possible. We have 3 caps designed to adjust this spacing to keep the phone tight in position. We also have one cap with a right angle bracket to assist with some side-port phones. And we have another cap that leaves a small portion of the traditional micro end sticking out that will let it fit into cases. Each device comes with all 5 caps.
Of course, these won't solve every phone and every usage. But we have tested with 30 different androids, windows, bb's, and feature phones and these have made the difference for most of them. Also, we don't recommend adjusting the position of the phone while it is connected to the cable except for small amounts to get it to the exact right position.
Click to expand...
Click to collapse
Do you guys have any pictures?
Looks cool...but I don't trust it.
I know the Note doesn't weight a ton, but it seems a little top heavy/big to be comfortably used with this thing.
Hmmm...maybe they could come out with something that'll attach to the USB port and allow the phone to be rested on or something to prevent all the weight from being on the phones port?
jimmer411 said:
Do you guys have any pictures?
Click to expand...
Click to collapse
http://www.kickstarter.com/projects...or-people-who-love-iphone/posts/238347?page=2
Lots of good pics there (Note included), along with a video of both the micro usb and iPhone connector in action with a phone.
This is a cool idea, and I like that the maker takes time to come and talk. I understand what he means that the weight is on the plug and the base and it seems like it would work fine under ideal use, but my concern is that I would smack it, hit it, knock it over, something that would cause far more then normal amount of weight on the plug. Im glad to see some innovation though, I may give it a whirl, we'll see.
Managed to get my hands on 2 of these and they are great - if you have a smaller phone. I have no problems with HTC wildfire s or Sony Xperia Ray. When it comes to the rather large Samsung gs3 it is a different story. I have to lean the phone forward to get it to charge and this defeats the purpose of the bobine. Also in portrait mode it doesn't charge just rest against the connector casing.
Great idea for small phones! Just hope they can get a solution for larger devices as the concept is great!
Sent from my GT-I9300 using Tapatalk 2

Phone Difficult To Wake Up

Sometimes if my G5 has not been used for an hour or so, it is refusing to wake up from double tap, power button or volume button quick shortcut. Only plugging it in has seemed to wake it up on these occasions.
Has anyone else had this issue?
Not yet.
I am chocking this up to poor software implementation using the ambient sensor. I found similar issues that the OP was describing, and in my testing, was able to verify something is wonky with how the phone "thinks" it is being looked at or not.
Simply put, if you cover the ambient sensor and the camera (on my device) with your finger, while the phone is asleep/screen off, no matter how many times you press the power button on the back/fingerprint scan, the screen will fail to come up. The moment I introduce some light into the room (open up the sensor), I am able to get response back on the phone.
Ran into this issue last night and for the life of me couldn't figure it out until daylight hit . Also, my case might be obstructing the sensor (lifeproof fre), but I also noticed the issue with no case on.
Logically, I imagine LG was trying to limit power consumption with accidental presses, etc. If the phone knows it is in a dark place, it won't respond (because it thinks it is in a pocket or a bag of some sort). My rebuttle for this is how do they anticipate planning for night-time use of the phone, or are we limited to a daywalker only device?
I am heading down to an AT&T store and seeing if I can replicate this on demo units as well. In which case, we know the issue is inherent in the device (and hopefully addressed in a software update). If I am not able to replicate this at the store, then I bet OP and I got bad units.
Thanks for looking. If anyone has any feedback, or can repro or not repro this issue, please chime back .
mikeythedude said:
I am chocking this up to poor software implementation using the ambient sensor. I found similar issues that the OP was describing, and in my testing, was able to verify something is wonky with how the phone "thinks" it is being looked at or not.
Simply put, if you cover the ambient sensor and the camera (on my device) with your finger, while the phone is asleep/screen off, no matter how many times you press the power button on the back/fingerprint scan, the screen will fail to come up. The moment I introduce some light into the room (open up the sensor), I am able to get response back on the phone.
Ran into this issue last night and for the life of me couldn't figure it out until daylight hit . Also, my case might be obstructing the sensor (lifeproof fre), but I also noticed the issue with no case on.
Logically, I imagine LG was trying to limit power consumption with accidental presses, etc. If the phone knows it is in a dark place, it won't respond (because it thinks it is in a pocket or a bag of some sort). My rebuttle for this is how do they anticipate planning for night-time use of the phone, or are we limited to a daywalker only device?
I am heading down to an AT&T store and seeing if I can replicate this on demo units as well. In which case, we know the issue is inherent in the device (and hopefully addressed in a software update). If I am not able to replicate this at the store, then I bet OP and I got bad units.
Thanks for looking. If anyone has any feedback, or can repro or not repro this issue, please chime back .
Click to expand...
Click to collapse
I have also experienced this issue (opened a thread a week ago). I have the exact same lifeproof case and my problem occured at night as well. Phone did not want to wake up at all until I either restarted it or had some light in the room.
Same problem, same case.
What I have found is if you pull the phone out of the case it wakes up. Thinking proximity sensor.
Sent from my LG-H830 using XDA-Developers mobile app
Yup. It really doesn't take much extra coding for them to allow the power button to "Always Wake" the device... I imagine there will be an update in the near future.
As for me... jumping ship to the S7 edge. I really liked the G3, and was hoping this phone could have been that for me... Well, not like I really swap batteries out often anyway
Same case. Same issue. Take the phone out of the case and throw a blanket over yourself and the phone. (Simulating night) and my screen unlocks easy peasy. Something about this lifeproof case. You would think this issue would have been caught in testing and QC.
Yes the phone has a built prox. override. But it only becomes an issue at night. Outside of the case I have no issues with prox. sensor.
I have experuenced this exact same issue with my g5. Whenever its in the dark the power button nor the double tap will wake the screen when in the lifeproof fre case. When out of the case the phone works just fine.
Word to the wise though if you have a zagg glass screen protector and drop your phone both the screen protector and the screen with shatter even if in the lifeproof case. I just experienced this and now have a replacement phone. Just a heads up.
soninja8 said:
I have also experienced this issue (opened a thread a week ago). I have the exact same lifeproof case and my problem occured at night as well. Phone did not want to wake up at all until I either restarted it or had some light in the room.
Click to expand...
Click to collapse
I have the rs988 variant and I have noticed this behavior when screen is in always on mode: if I suddenly change from light to dark by covering sensors, the always on clock goes out and nothing I do will allow it to wake up, until I allow brighter light again and the clock reappears. and I can use the double tap and power button again to see the screen. I also notice that the always on clock seems to have an auto brightness independent of the screen settings - I leave screen at 50% no auto brightness, yet I still see clock light levels dim in low light, One other thing - I notice that when I answer a call the screen blanks out (the way it is supposed to ) but does not reappear until I press the power button, just taking away from my ear does not bring display back; I also have the lifeproof case. and just removed it and verified my display now works when I take away from my ear; I just took some spray lens cleaner and cleaned all the surfaces of the phone and case with a microfiber cloth and put it back together and has vastly improved the issue, maybe gone, not sure yet. Update: seems like no matter how clean it is there is still a problem with the case doing something to the proximity detector, cleaning made it better. I can always wake up with the power button for the calling screen(sometimes swiping across top sensor too), wonder if the sensor is a passive light sensor or active (rf/infrared emission)
Same issue here same life proof case however it's getting worse as I am a mechanic and this phone goes through greasy hell. The plastic lenses on the lifeproof case are getting scratched and it's getting worse. It is also having a hard time autofocusing through this case. When you pull it out the phone is gorgeous and looks brand new. Good case but it has some downsides. Still better than a broken phone.
daniel3016 said:
Same issue here same life proof case however it's getting worse as I am a mechanic and this phone goes through greasy hell. The plastic lenses on the lifeproof case are getting scratched and it's getting worse. It is also having a hard time autofocusing through this case. When you pull it out the phone is gorgeous and looks brand new. Good case but it has some downsides. Still better than a broken phone.
Click to expand...
Click to collapse
There are allot of other cases you can use but not waterproof. That really sucks good thing for this thread I was going to buy a lifeproof case. Using a otterbox defender right now. Thanks for the post guys saved me some grief.
still under warranty?
daniel3016 said:
Same issue here same life proof case however it's getting worse as I am a mechanic and this phone goes through greasy hell. The plastic lenses on the lifeproof case are getting scratched and it's getting worse. It is also having a hard time autofocusing through this case. When you pull it out the phone is gorgeous and looks brand new. Good case but it has some downsides. Still better than a broken phone.
Click to expand...
Click to collapse
if still under warranty, see if they will honor it. They did with mine but that was right at the beginning when these problems were linked to the case; mine was in the first 3 months, but the new one worked well for a while, now a little flakey again but not enough to bother me...too bad, a great case otherwise
mikeythedude said:
I am chocking this up to poor software implementation using the ambient sensor. I found similar issues that the OP was describing, and in my testing, was able to verify something is wonky with how the phone "thinks" it is being looked at or not.
Simply put, if you cover the ambient sensor and the camera (on my device) with your finger, while the phone is asleep/screen off, no matter how many times you press the power button on the back/fingerprint scan, the screen will fail to come up. The moment I introduce some light into the room (open up the sensor), I am able to get response back on the phone.
Ran into this issue last night and for the life of me couldn't figure it out until daylight hit . Also, my case might be obstructing the sensor (lifeproof fre), but I also noticed the issue with no case on.
Logically, I imagine LG was trying to limit power consumption with accidental presses, etc. If the phone knows it is in a dark place, it won't respond (because it thinks it is in a pocket or a bag of some sort). My rebuttle for this is how do they anticipate planning for night-time use of the phone, or are we limited to a daywalker only device?
I am heading down to an AT&T store and seeing if I can replicate this on demo units as well. In which case, we know the issue is inherent in the device (and hopefully addressed in a software update). If I am not able to replicate this at the store, then I bet OP and I got bad units.
Thanks for looking. If anyone has any feedback, or can repro or not repro this issue, please chime back .
Click to expand...
Click to collapse
It's not a bug and not poor implementation. Its not light for "dark rooms" lol.. As far as I know it's the proximity sensor. When it is blocked it means the phone is in a pocket or bag and should not register taps. It really makes sense. If you dont xover the sensor and double tap doesn't work ..well.. Well, eother you have defective device or sensor , or the sensor is blocked (maybe bad screen protector?). This didnt happen with my G5 even once. It works 100% (assuming I tapped the same place)
Are the problems as described in this thread still manifesting on current firmware?

What happened to my Z5C screen????

So, long story short, my phone's battery had a sudden death. After I had it serviced by a 3rd party company, it came back with the screen somewhat damaged.
Here are some pictures for example, using the display service test:
I can't prove they did it because I simply couldn't turn the phone up until they replaced the battery. The battery might have leaked or something. They obviously didn't take the blame for it, but they also messed up the usb port so they are definitely a potential suspect. But, if they did it, what could be it? Looks like it got stained or wet or something... Definitely weird.
That kind of display issue is typically caused by a polarizer that is warped, usually caused by applying pressure to the display when it is hot. It's an all too easy thing for an inexperienced or careless repair person to do while the phone is face down on the bench, especially if they heat the entire device to loosen the seals, not just the back, or if they cool it down too quickly. It's even more common if the LCD itself is removed, but they should not have needed to do that to replace your battery. You may be able to improve it some by putting if face up, using a hair dryer to slowly heat the display a bit (not too close and moving continuously), and then letting it slowly cool down. If you have a screen saver installed, remove it first. You may be tempted to try and "work out" the warping. You are much more likely to make it worse if you try, so I don't recommend it. If you do nothing, it may slowly reduce on it's own as well.
Tiger Shark said:
That kind of display issue is typically caused by a polarizer that is warped, usually caused by applying pressure to the display when it is hot. It's an all too easy thing for an inexperienced or careless repair person to do while the phone is face down on the bench, especially if they heat the entire device to loosen the seals, not just the back, or if they cool it down too quickly. It's even more common if the LCD itself is removed, but they should not have needed to do that to replace your battery. You may be able to improve it some by putting if face up, using a hair dryer to slowly heat the display a bit (not too close and moving continuously), and then letting it slowly cool down. If you have a screen saver installed, remove it first. You may be tempted to try and "work out" the warping. You are much more likely to make it worse if you try, so I don't recommend it. If you do nothing, it may slowly reduce on it's own as well.
Click to expand...
Click to collapse
That might be the case. I can see the patterns shift a bit when I apply pressure to the screen. What is a way to confirm this? Could I do something with polarized sunglasses or something? If that is correct, the areas affected should darken/brighten differently from the rest of the screen.
I didn't try to mess with heating the screen up. Like you said, I might make it worse and I'm already really pissed about it. But I kinda want to try anyways. Where have you seen this before? Is it possible to fix it without opening the phone?
It's more common on tablets than phones, just because of size. I've seen it on screens that have been sat on but didn't break, but heat in combination with pressure is the more typical culprit. The sun or a hot car might do it if the heat was uneven, but I've not seen that. I'm not sure how you could confirm it. Maybe some sections will darken faster as a polarizer is rotated toward perpendicular to the polarized axis of the screen. Essentially, the glue layer between the polarizer and LCD panel is thinner in some places than others, so the polarizer is on a slight angle. In those areas, there is more polarization, and you see a darkness. The only real fix is to replace the screen assembly. The steps I gave will typically just help reduce, but never fully eliminate, the issue.
Unless they did a full, written inspection of the phone before you left it for repairs and you did a full inspection before walking out with it and noted the discrepancy then (which is always a good idea), your repair person is likely to continue to claim they did not do it.
The phone wasn't like that when the battery died. For obvious reasons, the screen couldn't be inspected before the company made the repairs. So I can't say it was their fault, although I'm pretty positive that it was. The suspicion is big because they also messed up the USB port pretty good. But, again, I can't prove it. It sucks because I wanted to sell the phone, and it was in pristine condition.

Repairs gone wrong.

Hi guys. I've been working on a RN2 for a while now and something has been bothering me.
BACKGROUND
___
Basically, it was a side phone I kept in emergency but as you know siblings who can't keep stuff safe, I ended up lending it to him (after having it broken by my other sibling and having to change the screen) and he ALSO broke it, so I changed it again.
___
Now, my problem is the following:
When I was working on the screen, I noticed it wouldn't turn on again, so, after buying aforementioned screen, I placed it and it still didn't turn on. When I tried the heat measuring, I noticed it was heating around the area where you plug the flex cable (black cable with 2 identical plugs that connects the charge module (which I also changed) and the motherboard. The heat is on the side of the MB. I tried to switch the plug backwards but it doesn't work either (and doesn't fit as it is backwards). I bought another flex cable (Theseus' boat much) and it still heated up. So it finally comes to the fact that the issue is in the MB. (I guess ?) Thing is, I don't know what exactly. Does anyone have any idea?
Thanks in advance, I've been on this for a few months now (working it when I have time).
All you can do is look visible damage like a cracked solder joint.
BGA chipsets solder joints can't be examined because they are underneath of them.
Any impact great enough to damage the display or frame could damage the mobo.
Examine your work. Are ground pathways present especially if the phone is "open"?
Look for damaged ribbon cable and connector pins. Try disconnecting/reconnecting the battery (hard reboot).
blackhawk said:
All you can do is look visible damage like a cracked solder joint.
BGA chipsets solder joints can't be examined because they are underneath of them.
Any impact great enough to damage the display or frame could damage the mobo.
Examine your work. Are ground pathways present especially if the phone is "open"?
Look for damaged ribbon cable and connector pins. Try disconnecting/reconnecting the battery (hard reboot).
Click to expand...
Click to collapse
HI, thanks so much for the quick reply! Unfortunately, I didn't see anything. I might come back to it with a better lens tomorrow for the week end. Would it be necessary to post a picture or two here tomorrow, to have a more professional opinion?
Thanks!
Iliassine said:
HI, thanks so much for the quick reply! Unfortunately, I didn't see anything. I might come back to it with a better lens tomorrow for the week end. Would it be necessary to post a picture or two here tomorrow, to have a more professional opinion?
Thanks!
Click to expand...
Click to collapse
You're welcome.
I'm afraid though that I contributed little to your cause...
You can try gently flexing the pcb and pressing on components with a pencil, eraser end to try to localize the trouble. The mobo is likely toast though if that's the cause. Mobo diagnostics just aren't available except at the manufacturer's level. Even then most repairs require a hot air station and a high level skillset to execute successfully. A few 3rd party shops probably rework them if there's high enough demand.
Always use a good case to protect internal components as well as the display and frame.
blackhawk said:
You're welcome.
I'm afraid though that I contributed little to your cause...
You can try gently flexing the pcb and pressing on components with a pencil, eraser end to try to localize the trouble. The mobo is likely toast though if that's the cause. Mobo diagnostics just aren't available except at the manufacturer's level. Even then most repairs require a hot air station and a high level skillset to execute successfully. A few 3rd party shops probably rework them if there's high enough demand.
Always use a good case to protect internal components as well as the display and frame.
Click to expand...
Click to collapse
Oh no, you did great! You gave me probably more information than I found the last few months! I will try the eraser thing, maybe I'll have some luck. I didn't really touch the board unless the un clip removal of components bands. I will take it down and see if this is what is going on! Thank you. I will keep the thread up to see if someone else has ideas and keep you updated!
Examine the mobo under an excellent high lumen point light source and use optical aids. Stereoscopic ones are best for this. Examine at different angles to look for solder cracks. They tend to be difficult to spot.
Remember out of circuit assemblies like the mobo are sensitive to ESD damage. Use a bare wood surface if no ESD mat/wrist strap are available. Raise room humidity to at least 50%.
Wear cotton not wool or synthetics.
Discharging yourself directly to an earth ground immediately before handling it helps. Nearly every object can retain a static charge to one degree or another even paper. Humidity helps to dissipate it once present but almost any material movement/friction can generate it.

Teardown question

My phone was recently stolen, and a friend gave me her Note 20 ultra and said I could just have it if I could get it to work. First off, the back was cracked in several spots but the screen is pristine.
I plug it in and nothing, no sound that it connected, nothing visual on screen. I leave it plugged in for 1/2 hr still nothing. I connect to my laptop and nothing. So I decided to take off the back and see if anything is obviously out of place due to damage done to back panel. After taking screws out and starting to disassemble I notice the power button is not connected. So I look up how to reconnect by watching some teardowns and I notice ummm the inside of my phone doesn't look the same as the ones in the teardown videos. So I search different Samsung white phones with stylus and I don't see anything similar. Since I can't turn on I couldn't verify it actually is a Note 20 ultra. It's not built like any of the videos, so now I'm like well sh*t I just ordered a replacement back panel and stylus from Amazon....
Anyhoo, my question is two fold.
1. Is this a Note 20 ultra? (I'm in Canada but couldn't find a specific video for that)
2. How do I reconnect the power button ?
Please help if you can I cannot continue with my old A02 the lag is driving me batty!
I've added a pic of a note 20 ultra from google as reference and the pic of mine is exactly how it looked when I removed the backing.
Wow
So much emptiness
Well, I've come to the conclusion this is clearly a fake Samsung note..
My first clue should've been the absence of the Samsung logo on the battery. The back panel from Amazon came in and thankfully I have a new galaxy S22 (the real Mccoy) but now I'm determined to fix this faker anyhow. 1. Because i spent the money on the back panel. And 2. I'm stubborn like that.
Does anyone have experience repairing flex cables? I saw a few vids involving soldering but I'm not that confident in my soldering skills..
I have those Bondic kits with the ultra violet light that hardens the glue type substance. It's that an option? The cable ripped right where it goes into place.
Damn it's god awful badly made. Sorry.
The chipsets are likely from an older generation as well. I would write it off.
If you learn to solder on those pads you will likely lift the solder pads. You should have a fine tip temperature controlled iron, fine gauge rosin core 63/37 solder and lots of practice. Soldering is easy once you learn some principles, techniques and get a feel for it. Many never fully master it though.

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