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Touchscreen issue

Hey all,
Recently I'm having some troubles with my touchscreen. I've had this problem a few times now, and it seems to act up more often now. Sometimes the screen doesn't register my finger. After I reboot, it works fine again. I believe it's always on the same place. Take a look at the screenshots that I've added.
Is this software related or hardware related? I'm in doubt if I should send it back for repair. I'm afraid that i'll lose my nillkin tempered glass screen protector
greets,
swa100

Suddenly the problem occurred twice today. It's ok after reboot. Who knows what's going on?

4 hours ago I decided to do a factory reset. About half an hour ago this happened: see screenshot.

I totally have the same problem. But I am sure that the spot, where the recognition does not work, is changing.
Do you have any tips to solve the problem? Or are you sure, that it is a hardware related issue?

Same problem
After looking it up it seems we are the only ones to voice this issue which led me to believe this is hardware. I did a warranty swap and now I've never been happier spending 600 bucks on this. That's the short of it.

Hello,
For touch screen problem try this:
-in dialer type *#2663#
-TSP firmware update (general)
You should see "PASS"
That have solve my touch screen problem...

Would be too great if this is the solution!

Dosi_ said:
Would be too great if this is the solution!
Click to expand...
Click to collapse
Seems to have worked for me but i will monitor over the next few days

-JFK- said:
Hello,
For touch screen problem try this:
-in dialer type *#2663#
-TSP firmware update (general)
You should see "PASS"
That have solve my touch screen problem...
Click to expand...
Click to collapse
This does not work on my Verizon S6. I only get a Verizon recording stating the call cannot be completed as dialed.
Sent from my S6 using Tapatalk

[Q] Stuck on booting up Samsung screen

Hi,
My Note Pro 12.2 P900 64gb is now stuck on the samsung screen of booting up and I am wondering if anyone can help me figure out what to do next.
I was experiencing the flickering issue for the last two weeks which got progressively worse and eventually caused random rebooting. One time last week it started booting slower and then it wiped out some widgets on my start screen and the apps in touchwiz but most everything else was OK. Then yesterday it would not boot up past the samsung screen. It charges up OK, and I can get to Odin where it asks if I want to load another operating system by holding power and vol up. But unless it is plugged in, just holding power off puts it in a boot loop.
The other part is if it is stuck and I hold power off it usually vibrates twice before boot looping.
I rooted the tablet when I got it, but still run stock touchwiz, I just needed some rooted apps namely LMT pie controls.
Can anyone please point me towards what to do next. Thank you very much for your help.

I guess wiping data and factory reset is your only solution right now
I shall warn you you could lose your data so I hope you already have a backup!
And also I've read that lollipop fixed flickering issue in p900 devices
I hope everything goes well for you
Good luck

hey there, you are not the only one, check this post. it seems is somethig related to battery issues
http://forum.xda-developers.com/showpost.php?p=61785158&postcount=14

minionhunter said:
The other part is if it is stuck and I hold power off it usually vibrates twice before boot looping.
Can anyone please point me towards what to do next. Thank you very much for your help.
Click to expand...
Click to collapse
When power on, try pressing on the back, near the center with your hand. to see if it can boot normally,
Keep pressing while power on. if it works I will tell you what causing this problem.

https://www.youtube.com/watch?v=VeSG0hHpAG8
here you can look by the minute 2:30 where the connector is located, basically under the samsung logo. I'm not doing tests yet because i have a busy day ahead

Thank you all for the responses. Holding down the back while powering on does not help. I do have the flickering thing and that started leading up to this. Lay night I took it the battery and disconnected it for a half hour and that did not help. Looking at the connections with a 20x hand lens did not reveal any cracks.
I don't remember how to wipe the data off the device, I got it right when it came out rooted it with cf root and never got around to twrp. All I wanted was LMT and Xposed. I never even updated the OS.
If anyone can help walk me through this to get it running again I'll send you a green poetic skin used once or a white well used GumDrop hideaway case I tested for work. I just would like to get this running instead of needing to purchase a new one.
Thank you again. Sincerely.

Flickering screen is caused by cracked battery connector which cannot be seen under magnified glass. Re solder will fix it, trust me I did fix some of them

Beut said:
Flickering screen is caused by cracked battery connector which cannot be seen under magnified glass. Re solder will fix it, trust me I did fix some of them
Click to expand...
Click to collapse
So resolder the 6 posts connecting the battery connector to the motherboard? Is there anything special I need to do that, just my soldering iron with a fine tip and solder? Anything special I need about the solder or do I need a wik or anything? The last time I did any soldering work was about 25 years ago.
Also will this fix the bootlooping and hanging on booting up at the Samsung word on the screen? If it is not going to fix that problem, maybe I should look at something else first.
Thank you very much again for your help.
Sincerely

minionhunter said:
So resolder the 6 posts connecting the battery connector to the motherboard? Is there anything special I need to do that, just my soldering iron with a fine tip and solder? Anything special I need about the solder or do I need a wik or anything? The last time I did any soldering work was about 25 years ago.
Also will this fix the bootlooping and hanging on booting up at the Samsung word on the screen? If it is not going to fix that problem, maybe I should look at something else first.
Thank you very much again for your help.
Sincerely
Click to expand...
Click to collapse
First, pressing the battery connector help your tablet to boot is a confirmation of cracked battery connector solders. 90% flickering problem is from cracked battery connector. 10% is bad battery. You should fix the battery connector first as it's major defect seen in many Samsung tablets. Re solder is simple, apply flux, then heat these pins and add more solders as possible to secure these pins. Even new main board, this connector will crack just after 3 or 4 months depending how you use your tablet, especially with who using it on their laps. The main board sits on a flexible LCD and only 3 screws to hold it to the frame at 2 speakers. You don't need to remove the main board, just disconnect your battery and re solder the connector from the top.
Be careful as this connector is very close to other components. Trust me, this re work will fix this problem as I have seen in some cases, battery jumps up from 8% to 45% after the re work, other cases pressing the battery connector help the tablet to boot or stop flickering.
This person applied the fix and succeed.
http://forums.androidcentral.com/sa...screen-flickering-problems-3.html#post4473418
I have the Note Pro 12.2 and I had this same screen flickering issue. It would start to flicker at first around the 38% mark. I did research online and found this thread and many others. I tried the software fixes like the enabling of Developer Mode and screen brightness and other tries, but to no avail. When I pressed on the back of the tablet, the screen flickering would stop but then shortly return. So I saw the fix of trying to raise the motherboard which worked for about 2 weeks, then the screen flickering did return. It would then start to flicker around the 58% battery level mark and when it got down to around 26%, the tablet would shut down. When I plugged it in, it would show battery level of 0%, then quickly jump back up to the 26% mark when it shut itself down. So then by this time, I saw more of this thread and now was shown the soldering of the battery connectors. I had soldering equipment, but it was too large for this repair as these 6 pins are very close together. So I went to the hobby shop and purchased new equipment for about $30 with a smaller pin to be able to do this. Now, I am not an electronics guy and my past experience was replacing two bad capacitors on my Plasma TV when it went bad. That was the extent of my experience to date. So I opened up the back of my tablet and soldered the 6 pins again and the screen flickering has not returned. I am on my 5th battery cycle from 100% all the way down to 2% and the screen flickering and shutting itself down has not returned. Some people have said an electronics guy will do this for you for around $30. Well, I spent the $30 and did it myself. I want to thank the people for posting the solutions here as the soldering worked for me.
And from this post, a confirmation that repair center will do the same thing to fix flickering , auto reboot, auto shut down.....etc...all problems caused by cracked battery connector ( Connector Header ):
http://forum.xda-developers.com/showpost.php?p=58943998&postcount=74

Ok I'll try to resolder it this weekend and report back. I think that my pertinent problem is that I have both the battery issue AND another problem that the tablet won't boot up at all but I will try the battery fix first and see what happens. Then I will report back.
Thank you very much for your suggestions.

Your feedback is very important as I see many " Hit and Run " users, they get the solution they need but never post back. Your first priority is fixing the battery connector, then next is the battery if problem persists.
This is a hardware defect I have seen in many Samsung tablets: battery capacity fluctuation, quick discharge, auto reboot, auto shutdown.......all come from battery connector . Read the threat Flickering Screen you'll see others try all solutions but never work because they don't know this is a hardware problem coming from this tiny connector.

LCD screen freaking out

Hello everyone, I must first thank you all in advance for your time to consider the issue I'm encountering.
Background:
Android 4.4.2
Unlocked Bootloader
Rooted
Able to boot into recovery
Issue:
Out of the blue it seemed I started suffering from the black screen issue, so I power cycled the phone and still had no display.
I took the phone apart to see if it was a small issue of the LCD ribbon cable getting knocked and managed to get to this stage.(See video link below, please excuse the coughing the household has got man flu )
Video Link
So I managed to get it to boot up and the screen is very glitchy, the digitizer is fine as shown in the video.
The Punchline
If I've already determined the LCD issue is at fault then why am I asking your kind folk for help you may ask?
I'm asking because I want to be sure it is merely just a LCD fault and not something deeper. I don't want to order a replacement screen only for the issue to persist.
Update:
Navigates settings fine, tried disabling h/w overlay to force GPU rendering but that made no difference. What also happens if I were to swipe left and right again on the app drawer the screen would eventually just fade/burn out to black and not turn on again unless I rebooted.
This leads me to suspect this maybe deeper than a LCD issue and more a hardware issue in regards to the CPU/GPU.
Thank you all for your time.
Kind Regards,
Ryan

Possible display damage? Or proximity sensor issue?

Hi everybody.
I’ve had this phone for 10 months now and it’s been great. Yesterday, when i was trying to make a call, it was telling me that i am too close to the screen. I understood that the proximity sensor was acting funny, but I didn’t had time to look into it, because it was not covered by anything and it was in good light. This morning it was a short white flash when I unlocked it or when I was turning the screen off. It worked great all day after that. Then this evening i was using the phone and all of the sudden the screen started to flash white, then it would turn off fast and back on all white. It did that for 4-5 times, then it went in the state you see in the clip below. At one tine, it turned on like nothing happened for 3-4 seconds.
If i plug the charger in, it reacts normal. It's making the charging sound and it vibrates. Seems to be alive in the background, even though it's not displaying anything.
Does it have anything to do with the proximity sensor? Is it the ribbon cable connecting the display to the motherboard faulty? Should i just order a new display assembly?

Interesting, the next day seems to behave a bit different. I had remote erased it, i didn't want any of my personal data to remain on it.

I have found out that if the brightness level is low, i takes a few seconds until it starts blinking. If the brightness is high, then it does that straight away.

Ok, i will post a follow up for anyone else having the same problem. Now i can see that the display is damaged on the top left corner, the pixels are staying lit up bright. Now i can use it on low brightness for longer periods of time without flickering.
I have ordered a replacement screen assembly and i'm still waiting for it, as i don't have the phone under warranty. Looking forward to getting it fixed.

I have also ordered a replacement screen and will replace it when the shipment arrived. Have you found a repair manual for the screen replacement?
I have already removed the back cover of my phone and it seems it will not be so difficult. But it would be better to follow a manual.

CrisGSM said:
Hi everybody.
Does it have anything to do with the proximity sensor? Is it the ribbon cable connecting the display to the motherboard faulty? Should i just order a new display assembly?
Click to expand...
Click to collapse
I read this post now, I've got this kinda of broblem a month ago, but this happened only when the phone temperature became hot, I mean over 40°C, after a factory reset everything became normal, I no longer got high temperature and this problem don't appear, so at least in my phone it wasn't a hardware problem.
https://u.pcloud.link/publink/show?code=XZlcytkZWeh5RbqPt7fWqlxP3mT0LSb7b3oy

Hey guys I had the exact same problem. I sent my phone back in for repair and this is what I got
We have completed the necessary evaluation and repairs. We have also updated your device to the most current software.
We are in the process of shipping your device back. Typically, you should receive your device within two to three business days.
Repair Info: Display Failure(LCD Crack) (Functional), Display Failure(LCD Screen Bla (Functional), Display Failure(Others) (Functional)
Tracking number: 3939 9990 3569
If you have any additional questions, please DO NOT respond to this email. You may call us at 1-877-817-1759.
My advice is if the phone is under warranty send it in. Seeing this makes me wonder if it's a widespread hardware issue

I have received the replacement display and i have done the repair myself. All is fine, the phone is working good now.

CrisGSM said:
I have received the replacement display and i have done the repair myself. All is fine, the phone is working good now.
Click to expand...
Click to collapse
How was the teardown ? I can't find any videos on it. The axon 7 was a pain for me because the aluminum case was a pain to take off around the corners and got damaged a bit. Hopefully removing the back of the axon 10 is a little easier . Thanks for any info

Black Screen Of Death

Hi All
Has anyone had any issues with a black screen?
Everything else works like incoming calls and notifications but the screen it totally black!
Woke up early hours last night and noticed no AOD so tried to turn my phone on but the screen was just dead. Tried the volume and power button but still no joy

Power it down completely then plug in the charger.
If nothing shows on the screen it sounds like you lost some significant hardware... maybe just a connector.

toddyc said:
Hi All
Has anyone had any issues with a black screen?
Everything else works like incoming calls and notifications but the screen it totally black!
Woke up early hours last night and noticed no AOD so tried to turn my phone on but the screen was just dead. Tried the volume and power button but still no joy
Click to expand...
Click to collapse
Same happened to my SM-N9860 unit when I woke up today. I about to unlock and the display suddenly went black screen. Did everything but no luck. I am also sure it's the display that's f***d up. The phone is still working - I can still access it in Dex and Link to Windows. This is my second Samsung phone with f**d up display for unknown reason. This is crap Samsung. Not expecting for this from an expensive flagship smartphone. I swear this is the last.

toddyc said:
Hi All
Has anyone had any issues with a black screen?
Everything else works like incoming calls and notifications but the screen it totally black!
Woke up early hours last night and noticed no AOD so tried to turn my phone on but the screen was just dead. Tried the volume and power button but still no joy
Click to expand...
Click to collapse
By the way, how did you fix your phone?
I tried searching it on the net, seems a number of Note 20 ultra units are experiencing the same.
https://us.community.samsung.com/t5/Note20/Note-20-Ultra-Black-Screen-Phone-no-display/td-p/1437825
Seems that display replacement is the only fix.

tribalfs said:
By the way, how did you fix your phone?
I tried searching it on the net, seems a number of Note 20 ultra units are experiencing the same.
https://us.community.samsung.com/t5/Note20/Note-20-Ultra-Black-Screen-Phone-no-display/td-p/1437825
Seems that display replacement is the only fix.
Click to expand...
Click to collapse
Poor parts QC.
Samsung will substitute components and smaller chipsets in the middle of a production run. This can lead to unpredictable behavior especially after firmware updates... or outright failures like this.
Not reassuring especially with a flagship phone.

blackhawk said:
Poor parts QC.
Samsung will substitute components and smaller chipsets in the middle of a production run. This can lead to unpredictable behavior especially after firmware updates... or outright failures like this.
Not reassuring especially with a flagship phone.
Click to expand...
Click to collapse
Yeah. Very disappointing.

I can't believe it but my screen unexpectedly revives itself after a day.

tribalfs said:
I can't believe it but my screen unexpectedly revives itself after a day.
Click to expand...
Click to collapse
Time will tell. Intermittents are the hardest hardware failures to troubleshoot...

blackhawk said:
Time will tell. Intermittents are the hardest hardware failures to troubleshoot...
Click to expand...
Click to collapse
Agree. But I am happy that it's working fine now and I hope it will not recur.

tribalfs said:
I can't believe it but my screen unexpectedly revives itself after a day.
Click to expand...
Click to collapse
hi im facing exact same thing in my N986 B Galaxy Note 20 Ultra. I had 10 percent battery left. i had put phone on charge and saw after 20 minutes and tghe screen was black.
Now its blackscreen can connect with tv via hdmi dex mode
but phone restarts after 10 minutes.
the touch seems fine as mouse function works phone is on but no display
can you tell exactly what you did when your phone revieved after one day
did u keep it on. charge all tiime tried reset or removed charging
or nothing and tried after 1 day
Edit After 24 hours of tapping slappingrebooting installing stock firmware. my display came back alive.
last thing was i was using phone in dex mode and trying to open close camera app rapidly by direct touch on screen. i dont know what worked but it saved my 300 dollars of screen replacement

I have exactly the same issue.
I was typing on whatsapp when suddenly screen get black. It was on friday morning. Notifications were ok, voice commands too. Touchscreen ok, I could use it normally when using my TV as screen with HDMI cable or with my notebook, when connected to windows or even Dex.
One day earlier I had an issue with the new magisk update. I freeze magisk manager wich was force closing but later, I managed to reinstall with dex and was working fine. Not sure if it's related.
I already flashed fresh stock Android R rom, wich I thought would solve any issues related to magisk or any other software issue.
24h after flash stock rom and keep force rebooting and taping, and my display is still dead.
Tried to tap, slap, shake (I can her some noise next to camera module when shaking, is it normal? I took off S-pen and microsd tray to see if it was the cause, but the noise still persists). No damage, water, or anything else. Only 2 months of use.
Display is still dead.
I'm draining battery now with some apps that also vibrate phone, to see what happens when full drained.
I live in Manaus/Brazil and repair centers are not working until March 23 because of Sars-CoV2. And my knox is tripped. It would cost a lot If I have to replace display or even the phone, since they probably will say it's no longer covered by warranty.
Any tips are welcome.
Thanks in advance.
Hope I have that lucky as well.

It happened to me again today. Surprisingly, a strong knock at center of the screen revived it again.

tribalfs said:
It happened to me again today. Surprisingly, a strong knock at center of the screen revives it again.
Click to expand...
Click to collapse
Hardware failure. May be a loose connection, cracked solder joint, trace failure on the mobo, or a bad component.
Intermittents are the hardest problems to find...

blackhawk said:
Hardware failure. May be a loose connection, cracked solder joint, trace failure on the mobo, or a bad component.
Intermittents are the hardest problems to find...
Click to expand...
Click to collapse
Yes, obviously. Samsung already replacing displays of those who are having this issue.

tribalfs said:
Yes, obviously. Samsung already replacing displays of those who are having this issue.
Click to expand...
Click to collapse
Not good if there's a recall... crap QC is getting to be a bad Samsung habit.

Those of you with BSOD issues: Did you have intermittent wifi connectivity issues as well? My N20U had the 'connected to wifi AP but no internet' for the last month. Then today after unplugging the OEM charger, checking charge level, never picking the phone up from the desk, and returning to it 30 minutes later the BSOD had hit. No amount of hard restarts or waiting fixed it and it had to get shipped back. Just wondering if there is any correlation between the wifi issue and the screen going out, and if people should start sending their note in ASAP if the wifi problem occurs before the screen goes?

hello
i had the same problem (didn't have any Wifi issues before)
and after the screen went black for 2 day , it came back and worked for a few hours.. then went off again and Never came back
i tried everything, resets , cables , connecting to Dex or Hdmi , updating.. but Never worked
i went to Samsung and they said screen must be replaced ( will pay for it as i am out of warranty)
can you tell me what have you done or if anything worked for you?

My screen went black after a screen replacement. Only the front glass was broken not the digitizer or actual screen. From what I can tell it's not just the screen that's dead, it's the digitizer too. The S-Pen board underneath it all isn't even registering. When I plug it in the computer doesn't see it so Dex won't connect and there is no signal for HDMI to work. Had the USB port replaced just to be sure it wasn't a bad port.
It's like some one took the graphics card out of a computer and took the touch screen monitor. The phone still gets signal. It connected to my smart Fossil watch and I could answer calls and texts.
But the phone is 9 months old. And from what I've heard from parts distributors it's not the screen that's the issue. So now I have a new motherboard. Now I have to figure out how to program it....