broken touch screen fixed itself - Nexus 5 Q&A, Help & Troubleshooting

A couple weeks into using my new nexus 5, half the touch screen stopped working (if you really had to, you could still press buttons by pressing the thing really hard). It seemed like it was a hardware issue so I unrooted and wiped the device with this guide
http://forum.xda-developers.com/google-nexus-5/general/tutorial-how-to-flash-factory-image-t2513701
with the intent of returning it. Part of this process involved TWRP (where there are touch controls), and the problem occurred even there. (to me, that seemed to confirm it must be a hardware issue).
Now after everything is factory-reset, the touch screen has magically started working again. I'm extremely confused how this could have happened. My best guess is that the issue was intermittent and i accidentally jiggled the phone in a certain way to make it start working again.
Does anyone have an idea what could have happened, or how I could stress-test things to find out? If it is indeed an intermittent issue and the phone needs to be replaced I'd like to do that ASAP because I'm leaving the country and dealing with warranty will be difficult from overseas.

Related

[Q] HTC HD2 Screen Not Working

I don't know if this was ever fixed but I just bought the HD2 off a friend and i saw it work for him but when i received it, it boots up normally, but then when i try to touch the screen, nothing responds except for the actual buttons. It seems to be running fine, just the screen doesnt respond to anything. No warranty. Is there a fix?
It sounds like the digitizer may be busted... You could consider trying to replace it yourself but it's a tricky business, especially when some models of the Leo require soldering to get the new one on
You could also try a different ROM. To be honest though, I would ask for your money back, as it's not in the condition you wanted.
I am wondering if this truly is a digitizer issue. This happened to me the other day. I reflashed my nand rom, and it eventually "woke up" and started working fine after about an hour.
Very strange, indeed. I'm hoping it is a software issue and that my digitizer is not failing...
love to hear some more thoughts on this!
I also have this issue, but when I press the screen very hard (very very hard) or when I press the end call button continuously then it works all again.
Same thing here. I got my HD2 since last March. It works really well until recently. If I let it sleep, the screen would not respond at all when if I wake it up. Luckily, it still under warrantee so T-mobile will replace a new one for me.

[Q] MORE HTC HD2 problems... this one is bad.

I've been having a reoccurring freeze issue with my HD2 no matter what build I am using. On the initial first time startup everything works fine until the display goes to sleep. Once it does, the touch pad freezes. Hard buttons still work although don't do anything since it's stuck on the lock screen, and even if I soft reset or reflash anything, the problem persists.
Not even disabling the lock screen helps. Even if I install lock screen disabling apps (I've tried them all), the touch screen is still non-responsive when I wake the display.
Whether I use stock winmo, custom winmo or android (NexusHD2 gingerbread 2.3.4 as of late, but I've also used the old Desire Android 2.1) makes no difference; neither does reflashing HSPL, radio, ROM, Recovery CWM, reformatting SD card, fixing file permissions or even performing Task29. I've even restored everything all the way back to stock winmo which didn't work, so I performed every step along the road to getting back to Android. No success. I'm at a loss because I've tried every solution I have found online in just about every order imaginable.
There has to be some solution to this issue and I'm hoping that SOMEONE out there will rescue me. It's been a problem since I first got the phone and although even once in a while it will work for no apparent reason, it has been in this status for some time.
PLEASE help. I'm tired of paying a bill for a phone I can't use.
It's most likely a hardware problem. Your digitizer has most likely went out, I'm not a pro but it happened to me before.
little13193 said:
It's most likely a hardware problem. Your digitizer has most likely went out, I'm not a pro but it happened to me before.
Click to expand...
Click to collapse
Is the digitizer easily fixable or would I need to replace it? Or would it just be overall cheaper to replace?

Problem with the proximity sensor, please help

Hi all, I have a weird problem with the proximity sensor in my HTC Titan. I got a new Titan about a week ago, to which I immediately installed HSPL and Dynamics rom. After I did all the tweaks and installs I like, I noticed that every time I dial a phone call the screen goes off and stays that way until the number I called answers. If the number does not pick up, only thing I can do is remove the battery basically to hang the call up. I noticed that removing the back cover slightly affects the issue and its easier to get the screen back on (by pressing the power button), but still removing it does not solve the problem. With a handsfree I can actually stop the call as it has an accessible end call button.
I tried flashing another custom rom and also a stock rom, both had the same issue. So, I took the device for warranty repair. I got it back today from HTC, with a note saying that software has been updated and problem has been fixed. I tried the device and surely it was working. Well I can’t live without an fully unlocked device and against my better judgment flashed a custom rom again… And surprise surprice the problem appeared back.
Im thinking here that could I adjust the proximity sensor from the registry, if its somehow too sensitive or something. Strange part naturally is that other people with same rom are not experiencing this behavior, so it is device specific problem. Also I don’t think I can take the device back again and say yeah I was flashing some custom roms on it and lost whatever you did with it.
There a Proximity folder at HKLM and I tried changing some values there but no affect at all. It probably would be better to have someone who understands about the values little try to take a look.
Thanks a lot!
It's a hardware problem. I got the same issue after 2 months of use. I sent to repair but they wanted to charge me to do that, so I haven't fixed it but I still can get the screen back by pressing and rubbing my finger on top of the sensor.
But when I got it back from repair today it was working. I made few phone calls and it was working totally like normal.
you are not alone
Loco5150 said:
But when I got it back from repair today it was working. I made few phone calls and it was working totally like normal.
Click to expand...
Click to collapse
I can tell you that you are not the only one with this problem, it happened the same to me. I'm still unsure if the problem is hardware or software, but I think it's software because it happened just after I install Dynamics_2.0_Titan. I really wish that someone will bring a good solution for it.

Capacitive buttons haven't worked for a long time

Had the phone since August, and never really had any of the touchscreen issues that people typically post about. Over the months I flashed many roms, always successfully, however at some point I noticed that my capacitive buttons stopped responding at all. I always had the nav bar enabled so it was fine, however recently I've wanted to get them working again. I followed the guide to restore to 100% stock CM12S, thinking that may fix it, however it did not. I haven't found anyone else that has this issue...is it likely hardware related and an RMA is my only hope of fixing this?

S6 Pressing Back Button By It's self (Capacitive key)

I'm not sure how this is possible, but about once or twice a day, the back button on my S6 is pressed on it's own. It has happened when the device has been on the desk, I see the soft keys light up, the device vibrates like they've been touched and the app I was on went back, all while I was not even touching the device.
It's happened mostly when I'm holding the phone but not even close to touching the buttons, and once it happened and pressed the back button about 10 times in a row while I watched it.
The phone is completely undamaged, perfect condition, never touched water, not dirty at all, buttons are 100% clean. Happens while it's charging or on battery.
Has anyone else experienced this?
(My device was repaired by Samsung for a different issue, motherboard replaced, this only started happening after the repair)
i have, started like yours random. then it started happening more and more so when i was at the store waiting for someone i decided to factory reset ( factory reset twice while at the store) but it got worse. couldn't even get passed initial setup the phone just kept spamming back button so i just kept going back. luckily i already ordered a replacement s6 from tmobile since i was having some other issue with the phone. sadly the replacement s6 took over 7 days to get here. shipped through UPS and got to hawaii then for some reason UPS gave it to USPS for delivery. kinda sad that i ordered screen protectors 2 days after i ordered replacement phone and the screen protectors got here 4 days later through USPS. but other than that my NEW ( we all know its refurbished) galaxy s6 so far has no issues. even the no audio on calls is fixed.
also if you are going to order a replacement, be sure to let them know you have a GALAXY S6 and the date it was released. i say this because the 2 tmobile reps i talked to kept asking questions they say it was for them to determine if my galaxy s6 that was what 2 almost 3 months old at the time was still under warranty
My s6 was showing the same issue with the stuck back button.
It started randomly but than it went crazy and stuck. I wasn't even able to use it.
But 1 factory reset fixed it.
But yesterday the random stuck back button started again when the phone was on my desk and it was really hot (weather was hot as well as the phone). I turned it off for a while and apparently the issue stopped.
I'm not sure it's temperature, firmware, whatever related but I really don't want to factory reset it again.
No solution here, but it is happening to me as well
Solved
Hi i had the same problem aswell , i bought samsung s6 in Pakistan, after the update the back button kept pressing ghostly, i went to local samsung repair shop and the assistant reset something from the setting and then it was fine, i even asked him what you did and how you did? but he said it is secret lol very stupid. i could have post the solution if i know it, but i think it is very easy and something to do with setting. i am sure it is not hard/soft reset. i will post this on other forums to help other people.
thanks
having this problem with my phone too, i cant even get it to stay on the settings screen long enough to back up my stuff
edit: well i think i solved it. i tried clearing the cache, didnt work. then i did a hard reset, didnt work. then i went back and cleared the cache and did a hard reset at the same time and it seems to have worked.
+1 same problem. It happens mainly when the phone is on the move. Funny thing it happened 3-4 times while taking the metro (go figure) with the data on. Usually when I turn off the data, it reduces the amount of back press.
Normal reset doesn't solve the problem. It stops after a while, probably when the phone cools down. I can't seem to reproduce it, but I believe it has something to do with the data on.
I don't really want to factory reset so I'm going to write to samsung directly as the phone is brand new.
i am having same issue too.
---------- Post added at 09:20 PM ---------- Previous post was at 09:16 PM ----------
Did anyone try loading a custom rom and got it fixed ?
I've had that issue with my first one. Took it back ASAP as it was DOA. Got a brand new one 3 days later as they didn't have any in stock. This one doesn't have any problems. Don't worry to mutch about it. Get it exchanged.
It is a hardware defect: When the phone turns up power to the radio to strengthen the connection, it can cause Electronic Noise to leak over the connection into the capacitive buttons (due to poorly insulated shielding tape), causing the phone to think the buttons were pressed. That's why you notice the problem more when roaming -- the device needs to be repaired/replaced.
I have the exact same problem...did anyone contact the manufacturer and got a response on the matter?
I believe it may be an app setting messing with the system settings. My device did it once and wouldnt allow me to use my device. After factory reset it made it worse so i used twrp and wiped everything but my modem and flashed my stock firmware and it stopped and hasnt done it since
Sent from my SM-G925P using Tapatalk
faiding said:
It is a hardware defect: When the phone turns up power to the radio to strengthen the connection, it can cause Electronic Noise to leak over the connection into the capacitive buttons (due to poorly insulated shielding tape), causing the phone to think the buttons were pressed. That's why you notice the problem more when roaming -- the device needs to be repaired/replaced.
Click to expand...
Click to collapse
Hum that's interesting, thanks for your precious input on this.
I did contact Samsung who asked me to do a factory reset. It didn't change anything.
They redirected me to a Samsung office in Paris, not for repair but for a deeper factory reset... (not sure what they are talking about), but I haven't been there since due to lack of time.
However, I didn't experience the problem since the last update FXXU3QOKN so I'm keeping an eye on it.
Following "faiding's" comment, I'll probably pay them a visit for a replacement.
working "workaround"
workaround:
lower the speaker volume to ~75% in all settings (Media, ringtone, system, notifications, etc...)
Whats going on? why is it working?
some posts ago someone (user called "faiding") mentioned something about EMC leak, or at least he meant to, by mentioning a faulty insulation.
with that in mind i did some testing and found out that the closes radiating component it the speaker... and once you lower its emissions even thought the faulty insulation, the EMC leak is sufficiently low and the 'capacity short' is avoided.
Note: depending on how 'faulty' is your insulation (it varies from one phone to another depending on production line assembly) lower the volume until the issue stops accruing.
not full-proof but working
What worked for me is turn power saving on
possible fix
might be a coincidence, but this worked for me:
(I am a new user so i cant post a link but here is what you should do)
1. enter YOUTUBE
2. find this video: "Samsung Galaxy S6 Touch Screen Sensitivity Fix"
worked like magic for me
Repair tech
It is true that if your in the US and your phone has no damage or any water damage to void your warranty even if you bought it from someone else, u can register the phone at samsung website and then request a repair. It will still have a warranty.
But as I am a Cellphone tech, sometimes I rebuild phones. A s6 came into my shop and i once rebuilt it and worked for a while before doing the phantom touches on task and back keys. So when i pulled the screen up a little off the touch keys, it would stop. I gave up after a while trying to figure it out as i had more things to work on. Back in December i decided to rebuild it again, new screen, new battery, new frame and new back. Turned it into a gold s6 to try and sell it again. Sold it couple days ago, and it came back the next day doing the same thing. So got bored tonight and started to take it back apart. Figured i would try one more thing, replaced the charging port (which is also the soft touch keys) to see if that would resolve it. So far its not wigging out but im letting it sit here and try using it from time to time, with wifi on and a simcard installed. So far its not going crazy, but I will let everyone know if it fixes it or not. As for the "Youtube thing" I tried that, did not resolve. Im guessing its a defective soft touch keys/charging port.
I would not recommend this repair unless your phone is out or voided of warranty.
dslayer83 said:
It is true that if your in the US and your phone has no damage or any water damage to void your warranty even if you bought it from someone else, u can register the phone at samsung website and then request a repair. It will still have a warranty.
But as I am a Cellphone tech, sometimes I rebuild phones. A s6 came into my shop and i once rebuilt it and worked for a while before doing the phantom touches on task and back keys. So when i pulled the screen up a little off the touch keys, it would stop. I gave up after a while trying to figure it out as i had more things to work on. Back in December i decided to rebuild it again, new screen, new battery, new frame and new back. Turned it into a gold s6 to try and sell it again. Sold it couple days ago, and it came back the next day doing the same thing. So got bored tonight and started to take it back apart. Figured i would try one more thing, replaced the charging port (which is also the soft touch keys) to see if that would resolve it. So far its not wigging out but im letting it sit here and try using it from time to time, with wifi on and a simcard installed. So far its not going crazy, but I will let everyone know if it fixes it or not. As for the "Youtube thing" I tried that, did not resolve. Im guessing its a defective soft touch keys/charging port.
I would not recommend this repair unless your phone is out or voided of warranty.
Click to expand...
Click to collapse
Hi dslayer83,
I've the same problem with my S6
Could you solved the problem replacing the charging port?
It would be very important to me knowing how to repair the phone because I buyed it abroad. In my country Samsung does not cover warranty.
Up with this thread!
I had an S6 since January.. initially the problem was very random, maybe 1 or 2 times per day, sometimes would go crazy for a while
Then i had some time with no defect at all (a couple of weeks?) without doing nothing
This past week, the phone was feeling like the MENU button (what menu as in this phone there isn't any?) and that was very weird!
Today, it simply went completely crazy, and now is completely unusable... i can't actually swtich it off as the back key is pressed so quickly i don't have the chance of doing nothing!
EDIT: Managed to reboot and wipe cache... now it is useable, but still hits the button from time to time
Update... went unuseable again today.... factory resetting now...
If it works, shall we suspect is something software related?
Update: Not working... it started giving the phantom touches just after the factory reset then suddenly stopped
Worked fine for few hours, then started craza again
Now i have done a wipe and factory reset again, and still unuseable

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