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Has anyone else noticed the large amount of ghosting the Xoom display has? Its very prevalent to me, especially when a red or black object moves across the screen (red angry bird (especially when zoomed in), red icon on homescreen while scrolling (pew pew), black bars between gallery images, etc).
Its bothering me to the point of returning it (and looks like I'll have to eat the 15%/$90 restocking fee at Amazon). I'm wondering if the Asus Eee Pad Transformer or Samsung Galaxy Tab 8.9/10.1 will have a better response rate. I know they both should have a better viewing angle with their IPS displays.
I have an ISF certificate and don't see any ghosting...
Really? Could it be I have a defective unit. I just find it hard to believe I would be the only one to have/see this.
Listen enable flash, then open this site on your xoom try to go full screen and tell me your findings.
http://www.prad.de/en/monitore/testsoftware/ghosting.html
Btw I have ghosting as well, but never noticed it on before. Thanks for the heads up. Ill reply back when I get more info.
I have no ghosting at all on my nexus one, the screen size have a huge effect on ghosting btw, but just an fyi.
2 Days ago I've been playing DoodleJump on the Xoom, and noticed the game running faster (you can test this) ofcourse you'll have to be familiar with the usual pace of it on the phone version of the game.
I've suspected the frame rate per second to be higher on the Xoom than the Nexus one...which could also be factored in, in refresh rate and then added to the whole performance. Which could spark problems like the ghosting we are seeing.(if you ever tried emulating a PXS on a PC you'll know what I mean)
I know that the screen response time could be a major factor but I couldn't get any information regarding the specifics of this screen. (btw you could be holding two Xooms with different screens)
So my guess for now, is the problem is with the refresh rate on the screen or the way the JIT compiler emulates...which could be solved with an update or a software tweak. Take what I said about the software side of this with a grin of salt
wow horrendous ghosting!!!!! (Using the ghosting test above)
Bumping this thread. Just noticed this on my xoom! Is it normal?
Another test : try going to http://tinyurl.com/xoghost and watch the drumsets at the bottom of the page and the guy in the second last row of second page ghost when you scroll the pages up and down.
Sorry... just saw the responses to the thread. For some reason my email notifications were off.
I ended up returning my Xoom to Amazon while still in the 30 day window so I can't do any further testing. One of the primary reasons for returning was due to the screen ghosting (and overall screen quality). I've also got my eye on the Asus transformer with the IPS display, but it keeps getting delayed. I might just wait until fall reign the next wave of tablets come out... maybe something with a tegra 3
Sent from my GT-I9000 using XDA App
I'm also seeing quite a bit of ghosting. Is this typical for xoom users?
Selbmig said:
I'm also seeing quite a bit of ghosting. Is this typical for xoom users?
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Click to collapse
It would seem so, It's absloutely terrible using the ghosting test linked. I'm getting a ghost the length of the actual cube trailing on my screen, in full screen. =/
ASUS Transformer doesnt suffer that much with the links you posted.
There are two different panels for xooms, one being AU optronics brand (typically sited as the cheap/crappy display) and the Sharp brand display which is supposed to be better.
I have the AU Optronics display and going to the ghosting URL linked previously I get terrible ghosting.
Can anyone with the sharp display test this and see what they see?
You can determine the display type by typing dmesg into a term emulator.
Sharp panels say: 'lcd_manfid=SHP'
AU panels say: 'lcd_manfid=AUO'
Now since dmesg is the kernal ring buffer you might need to reboot before you see it in your dmesg output.
Sent from my Xoom using XDA Premium App
I'm not surprised by the ghosting on these displays. Every mobile device I've owned has ghosted horribly. Even a lot of monitors around the office do it, but people don't seem to notice or care. I've always used 2ms displays at my home setup because of this. That being said, I paid about twice what other displays of similar size cost. People don't want to see the price of their precious electronics going up without seeing more nice specs on the list. A low response time display won't sell as well as a faster CPU or RAM... If you find a market that is looking at those 2 specs then make them great. Cheap out on the rest.
Actually this ghosting effect is due to the speed at which the pixels can change from one color to another. Some displays have issues with different color transitions.
This is something that doesn't happen on my nexus ones amoled display. And most of my monitors that I have also don't have this issue, at least to the degree of the xoom. It is disappointing to see how cheap the xoom display is.
I bet my droidx doesn't suffer from this either.
Sent from my PC36100 using XDA Premium App
Maybe I'm crazy, but I began to notice ghosting on the screen, especially on the desktop after I upgraded to 3.2 Honeycomb.
If anyone can test whether the effect exists in 3.0 and 3.2, I appreciate it.
UK Xoom Wi-Fi only and I get ghosting too!
lcd_manfid=SHP
smsmasters said:
UK Xoom Wi-Fi only and I get ghosting too!
lcd_manfid=SHP
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Click to collapse
Yes, there's some ghosting, but so what? What does it actually affect? I haven't found any effect whatsoever.
Doesn't bother me. Just posting my findings.
Sent from my Xoom using Tapatalk
smsmasters said:
Doesn't bother me. Just posting my findings.
Sent from my Xoom using Tapatalk
Click to expand...
Click to collapse
I know...I wasn't shouting or anything ;^ )
I just think this ghosting thing is not a big deal.
that is the question. I've been using my 32 GB Transformer since it arrived on May 12, and I have to say that overall I'm a huge fan. Since I have seen so much on these boards about the various QC issues, I gave my tablet the once-over almost immediately. The speakers seem fine, no SoD, etc. The only defects I found were about 4 points of light along the left and bottom of the tablet when held in landscape. These show up at about 80-100% brightness with a dark background (not a black jpg), and are not terribly invasive. However, as I use the tablet more, it is a bit annoying just to know they're there. I've also experienced a bit of screen flicker (only with Angry Birds so far), but suspect that this may be more of a software/rendering issue. So the question I have to ask myself is "Do I send it back?" I've heard a number of stories on these boards and elsewhere of people who RMA'ed, waited, and got back a poorer product than they started with. I can live with a little light bleed, but I'm not sure I want to. Any thoughts? Thanks in advance.
--SemTechie
I'm kind of in the same boat. I've got a single hot pixel and obvious light bleed that is mainly noticable with black/dark backgrounds. If I send it back to the retailer I could end up waiting a month or MORE for a replacement that may have the same or worse issues. And then what happens? Would the retailer take it back and keep this back-and-forth game up till I recieved a tablet that has no isses? I doubt it. I'm thinking that maybe I should call Asus and see what they have to say about the backlight bleed on the tablet.
No matter what you do you will be taken care of, if you RMA it now or in 6 months from now. Asus has great warranty support. They even pay for the shipping away to them for RMA. Most companies make you eat that cost.
Seems like the QC issues are widespread throughout the TF supply, which means the manufacturing process is flawed / needs correction. So, RMA'ing now might not yield good results. Might be better to wait a couple months to RMA, assuming that ASUS would actually address and correct the QC issues.
I've noticed some light bleed in a couple spots when cranking up the brightness, but since I don't usually have the brightness over 50% and I don't tend to stare at black backgrounds I'm just brushing it off....for now. When I read that customers are getting TF's RMA'd w/ new TF's w/out any issues, then I'll consider RMA'ing.
I am also waiting to RMA.
My HDMI port is really unreliable and the connection will be detected and dropped constantly if you touch it at all. If you jiggle it just the right way it will immediately put the tab into a SOD. I've already called ASUS to get the issue on record but I told them I'm waiting to RMA until after I've heard of other's successfully repair experiences.
I only have very minor light bleed and a tiny creak in the top left of the chassis, both a non-issues but the HDMI port sucking really bothers me.
Light bleed is pretty common to bigger ips displays. Do a search for iPad light bleed and you will see what I mean.
SemTechie said:
However, as I use the tablet more, it is a bit annoying just to know they're there.
--SemTechie
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Click to collapse
This is exactly the problem. People go looking for trouble, and trouble is what they'll find.
I'm having same issue. At first I didnt' want to think of it and didn't try to look for it. But whenever I start some apps and the screen is dark. I can see som light bleed on the side and one very annoying one in the middle of the screen about an inch long. I can live with the sides...but in the middle of the screen is pretty hard to accept.
I got my 4th unit yesterday, Serial C07. The different with this unit apart from the others i have received is that you can clearly tell it has a different (cheap ips screen). The units i have returned have been because of defect (last one i bricked :crying. The one i receive yesterday is in almost perfect condition but notice the screen has bad viewing angle. Is still an ips screen but the view angle is bad because the contrast is not high enough (thats what it seems). Not sure how to explain it but when you turn the screen to the side you only see a bright backlight screen (not backlight bleeding, 2 different things). it make everything look like a cheap TN screen with great viewing angle (for a tn screen). I'm going to replace my unit again today.
Hello fellow XDA members,
In the past I started some threads regarding Samsung AMOLED display quality, especially for the Note devices.
Please see here if you are interessted:
https://forum.xda-developers.com/note-4/general/note4-amoled-screen-quality-t2906365
https://forum.xda-developers.com/showthread.php?t=2463786
Now, with the S8+ (and the S8, the problem is the same), even the media recognized the display problems, known as "red tint", just google for it!
Samsung tells the people that this is due to wrong settings, and/or the adaptive display setting turned on! THIS IS NOT THE CASE!!!
I got 2 pieces of S8+ today, and both displays are not OK. One screen has the red tint issue, but only on the upper half of the screen.
The other device has no red tint, but is generally darker and looks more "washed out" and has a slight yellow tint.
So again the display lottery is back, it is only "luck of the draw" if you get a decent screen or not!!!
If you do not believe me just compare a few devices beneath each other with the exact same display settings. Turn adaptive display off, then go into the dialer and type *#0*#, with this you ensure the brightness settings are the same and you have the same sceen content on both devices. You will notice that every single device has a different screen quality (tint, evenness, ...)
What do you say? Acceptable or not?
With all of us over at the tmobile shipping thread we've been waiting and crying and hoping that we get our devices early....and then when we finally got our devices ****ty things like red tint leaves a sour taste in our mouths..sad really, samsung already made this device feel rushed with all the Bixby and fingerprint scanner awkward positioning and what did we do after the note 7 debacle? We forgave these fools...and now this?....i do feel bad for those that actually paid full retail price for these expensive devices and to unbox and realize the screen is pink...that right there is not how to say forgive us for our mistakes instead a huge f u to all the customers who were unlucky enough to get such a horrible display color....but I will say I won the lottery because out of the box my s8plus came out nice no red pinkish tint whites are white...but why am I still pissed? Because my note 4 was the same whites were white and then after a year or so my eyes were fixed on a strange color that was taking up half of the screen that came out of nowhere...so yes I will be forever paranoid with sammys displays now....if my s8plus came in like that I don't think I would've came back....but then again I'm here lol
Settle down guys, this will likely be fixed with a future fw given the attention its gotten, this is pretty simple for samsung to fix actually, all samsung needs to do is what video games have been doing for years; offer the user an option to calibrate based a sample image. Once thats in, the presets can be established based off of those generated values from the user selection.
It seems like they will indeed need to implement a fix of this sorts, because it does seem the displays hue varys from device to device.
Anyways, for the most part, I hardly notice it and it seems even, and the more I look at it, the more i can't make sense out of it? Seems to play tricks on my eyes... lol.
Beautiful phone and display though!
cantenna said:
Settle down guys, this will likely be fixed with a future fw given the attention its gotten, this is pretty simple for samsung to fix actually, all samsung needs to do is what video games have been doing for years, offer the user an option to calibrate based on a sample image provided, once thats in the presets can be established based off of those generated values.
It seems they will need to implement thia because the displays vary so from device to device.
Anyways, for the most part, I hardly notice it, it seems even, and the more look at it the more i can make sense out of it, seems to llay tricks on my eyes, lol.
Beautiful phone and display though!
Click to expand...
Click to collapse
This is a hardware problem, a real software fix IS NOT POSSIBLE!!!
Samsung can only try to cammo the problem with increasing the range of the color-sliders in the display settings, so that you can turn down red more then now. But this wont fix that the red tint is NOT EVEN ACROSS THE DISPLAY!!
What else proves that this is a hardware error is that if you put 5 devices next to each other (with the exact same settings), each of them will look different in regard to screen quality! Believe me, I know what I'm talking about, see my previous threads regarding that!
I agree that it should be even otherwise you may have a hardware problem but my concern is your criticism has more to do with amoled in gerneral and what we are observing is a consequence of the tech used. Samsung is also pushing the boundries here too with the display tech so the norms for amoled to compare to may not even apply anymore. And your comment to my comment regarding masking the problem, there is a reason why every display on the planet has picture settings.. right? No 2 displays are exactly the same...
I just went through the crap with my Surface Pro 4 too, trust me, they are a good example of no 2 displays alike, must have went though at least 11 Surface Pro 4 on my mission for perfection display and I had to give up in the end because truth is, its still an awesome device!
that happens when you get the early batches of s8+
h4ck3r69 said:
that happens when you get the early batches of s8+
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Click to collapse
Absolutely unacceptable reasoning. They shouldn't be putting out a product if the "early batches" are DEFECTIVE
Obviously it's a QC problem, which they seem to have some fairly big issues with, over and over.. They will lose customer faith if they keep doing this ****
ingenious247 said:
Absolutely unacceptable reasoning. They shouldn't be putting out a product if the "early batches" are DEFECTIVE
Obviously it's a QC problem, which they seem to have some fairly big issues with, over and over.. They will lose customer faith if they keep doing this ****
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Click to collapse
Perhaps but then again why did you buy a phone from samsung in the first place?.....
I was in the Samsung store yesterday for the launch party. They had 3 S8+ on display next to eachother. Each was running the exact same retail mode, showing the exact same content at the exact same time.
One display was white, one was red hued, and one was pee yellow.
(No, it wasn't display calibration settings, I checked).
There are definitely quality control issues.
GibMcFragger said:
I was in the Samsung store yesterday for the launch party. They had 3 S8+ on display next to eachother. Each was running the exact same retail mode, showing the exact same content at the exact same time.
One display was white, one was red hued, and one was pee yellow.
(No, it wasn't display calibration settings, I checked).
There are definitely quality control issues.
Click to expand...
Click to collapse
And which of the 3 do you have?
I noticed a slight pinkish tint when the shipping screen protector was on, but looks ok without it.
Something slightly different this year is there seems to be a pink tinge on all four sides of the display (top, bottom, left and right). It's a very consistent along the sides of the screen and very noticeable, a few people here have also noticed it: https://forum.xda-developers.com/galaxy-s8/help/red-tint-screen-t3592335
So it's not just another pink/yellow/blue/green spotty tinge problem, theres now uniformity with the example i've provided.
I've got the S8+ and the screen is not red at all. The left and right edges if anything have a slight blueish tone to them but I believe this to be the effect of the screen curving to the sides distorting the colour (Colour shift?).
Unless you have bought one and have the problem with it, you have no right to complain.
cantenna said:
And which of the 3 do you have?
Click to expand...
Click to collapse
Mine had a very slight pink tinge when I got it, at the very top and bottom (maybe half the status bar thickness), and it's since gone way.
The over all display color was a little too warm for my liking, so I knocked the red slider down to half, and now it's fine.
Got me and the wife one yesterday from At&t. No red tint and best phone yet. I love it.
My display is freaking beautiful and I love the fingerprint location. I never had any trouble. My finger finds it very naturally
Sent from my SM-G955U using Tapatalk
TML1504 said:
Hello fellow XDA members,
In the past I started some threads regarding Samsung AMOLED display quality, especially for the Note devices.
Please see here if you are interessted:
https://forum.xda-developers.com/note-4/general/note4-amoled-screen-quality-t2906365
https://forum.xda-developers.com/showthread.php?t=2463786
Now, with the S8+ (and the S8, the problem is the same), even the media recognized the display problems, known as "red tint", just google for it!
Samsung tells the people that this is due to wrong settings, and/or the adaptive display setting turned on! THIS IS NOT THE CASE!!!
I got 2 pieces of S8+ today, and both displays are not OK. One screen has the red tint issue, but only on the upper half of the screen.
The other device has no red tint, but is generally darker and looks more "washed out" and has a slight yellow tint.
So again the display lottery is back, it is only "luck of the draw" if you get a decent screen or not!!!
If you do not believe me just compare a few devices beneath each other with the exact same display settings. Turn adaptive display off, then go into the dialer and type *#0*#, with this you ensure the brightness settings are the same and you have the same sceen content on both devices. You will notice that every single device has a different screen quality (tint, evenness, ...)
What do you say? Acceptable or not?
Click to expand...
Click to collapse
=======
im not tying to be a jerk but just curious what happens when you cycle the --blue light filter-- button in the pull down menu with the wifi, Airplane mode ect.
reason i ask my displays is perfect but with the blue light filter on which is to reduce eyestrain ..then the display is very red
Really did not know they had this till i play around with it
Jonathan-H said:
I've got the S8+ and the screen is not red at all. The left and right edges if anything have a slight blueish tone to them but I believe this to be the effect of the screen curving to the sides distorting the colour (Colour shift?).
Unless you have bought one and have the problem with it, you have no right to complain.
Click to expand...
Click to collapse
I have an S8+ as per my posts in the other thread, so I have a right to complain.
Firstly, it could well be fixed by software, even if its uneven, HTC had issues with the camera doing this a number of years ago (big red spot in all pictures). It was fixed with software
Secondly, it might disappear with time. AMOLED, OLED and other self lighting technologies (like Plasma in TVs) have a bed in time, where some colour ranges need to burn in. I would suggest a full red screen using a screen tester app for a few hours, to see if it beds in the red.
Guys, I would like to take this device, there is a possibility of having a faded display?
Hey guys, quick check in. It seems all my coworkers and friends who have the N20u have this problem at certain stages.
There's reports online of excess glue during teardowns and it seems like it's staining the display. Samsung has been super lack on replying back to me with answers.
Mine was perfect until it started to show slightly around the camera cutout, then within the last day it's a huge chunk of the center of the display. So it's something that happens fast and suddenly. What do you guys think?
Display failure. I highly doubt the adhesive is "staining" the display. That outline doesn't correspond to the internal parts.
Manufacturing defect in the display it's self. Perhaps heat fried display drivers from excessive CPU heat ie insufficient heat sink capacity. There's been reports of poor heat sinking on at least some of these devices.
blackhawk said:
Display failure. I highly doubt the adhesive is "staining" the display. That outline doesn't correspond to the internal parts.
Manufacturing defect in the display it's self. Perhaps heat fried display drivers from excessive CPU heat ie insufficient heat sink capacity. There's been reports of poor heat sinking on at least some of these devices.
Click to expand...
Click to collapse
Well they're calling it samsung glue gate, it's happening to phones older than a year and it's a actually very common in many parts of the internet.
I'm surprised it's not big on XDA yet but we are more fanboyish then the rest of the world.
I absolutely love my note, I still plan on keeping it even with the discoloration.
coilbio said:
Well they're calling it samsung glue gate, it's happening to phones older than a year and it's a actually very common in many parts of the internet.
I'm surprised it's not big on XDA yet but we are more fanboyish then the rest of the world.
I absolutely love my note, I still plan on keeping it even with the discoloration.
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Click to collapse
I can't see how it corresponds to any of the internal parts on the teardowns.
All the newer Notes use lots of double sided adhesive strips. It's pretty much chemically inert.
Displays can be damaged by heat and pressure, like a battery failure. A control portion of the matrix of the display ie drivers may have been damaged more likely by heat but maybe pressure. That would explain the odd shape and size. The actual damage portion could be very small it's self but effect a large area.
Try running Screen Test to get an idea of what group of pixels are damaged to get more clues to the cause and actual damage.
I have this issue on my N20U. It was much worse at the beginning but I read that putting the phone in direct sunlight would solve the issue. I did that for like 30 minutes and to my surprise it almost went away. It has been a week after I did that and I barely see the rectangular shadow on the grey backgrounds as I used to see them before.
I still don't know if I should get a new phone, is this issue serious? I mean does it lead to the screen dying on me suddenly or not.
I hope some expert answers
blackhawk said:
I can't see how it corresponds to any of the internal parts on the teardowns.
All the newer Notes use lots of double sided adhesive strips. It's pretty much chemically inert.
Displays can be damaged by heat and pressure, like a battery failure. A control portion of the matrix of the display ie drivers may have been damaged more likely by heat but maybe pressure. That would explain the odd shape and size. The actual damage portion could be very small it's self but effect a large area.
Try running Screen Test to get an idea of what group of pixels are damaged to get more clues to the cause and actual damage.
Click to expand...
Click to collapse
The point is that this defect follow exactly the same rectangular shape with that oval part at the bottom on all the Note devices I saw online including mine ofc.
ghassan haddad said:
The point is that this defect follow exactly the same rectangular shape with that oval part at the bottom on all the Note devices I saw online including mine ofc.
Click to expand...
Click to collapse
If you look at the teardown vids or pics you can see that none of the subassemblies or components match that position*. Therefore the defect is in the display itself especially if you can alter its appearance by heat.
It could also be a failure on the mobo but that's probably less likely vs a display failure. All the display drivers are integrated into the display. A AMOLED display is a very complex, busy piece of hardware.
It should be replaced... that's my estimate.
Since the introduction of the variable rate displays all manufacturers have been having issues some more, some less. Most of the issues are with color rendering, but some are outright failures. You see very little of this with the Note 10+ even after 2+ years.
*I'm referencing the OP's original post. If yours differs see if a subassembly matches up with yours. Samsung makes extensive use of double sided tape in the assemblies. As I stated earlier the adhesive is pretty inert. It may be putting pressure on the display if the wrong tape was used or not mounted to specs or a part was out of spec. Samsung will substitute parts due to shortages during a production run. This is introduce unforeseen consequences.
blackhawk said:
If you look at the teardown vids or pics you can see that none of the subassemblies or components match that position*. Therefore the defect is in the display itself especially if you can alter its appearance by heat.
It could also be a failure on the mobo but that's probably less likely vs a display failure. All the display drivers are integrated into the display. A AMOLED display is a very complex, busy piece of hardware.
It should be replaced... that's my estimate.
Since the introduction of the variable rate displays all manufacturers have been having issues some more, some less. Most of the issues are with color rendering, but some are outright failures. You see very little of this with the Note 10+ even after 2+ years.
*I'm referencing the OP's original post. If yours differs see if a subassembly matches up with yours. Samsung makes extensive use of double sided tape in the assemblies. As I stated earlier the adhesive is pretty inert. It may be putting pressure on the display if the wrong tape was used or not mounted to specs or a part was out of spec. Samsung will substitute parts due to shortages during a production run. This is introduce unforeseen consequences.
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Click to collapse
I already checked that and had the same conclusion that it had nothing to do with any of the internal components. But I still can't understand how all the phones have the same (Gluegate) pattern
blackhawk said:
...Samsung will substitute parts due to shortages during a production run. This is introduce unforeseen consequences.
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Click to collapse
Samsung possibly scotch-taped our phones? lol.
Haven't had any issues w/ my N20U.
Do y'all have screen protectors on your phone that have glue gate?
jsusang said:
Samsung possibly scotch-taped our phones? lol.
Haven't had any issues w/ my N20U.
Do y'all have screen protectors on your phone that have glue gate?
Click to expand...
Click to collapse
It may be a plastiser reaction between different incapable plastics. If so it will get worse.
This is more likely.
Lol, anything you read on Reddit needs to be taken with a grain of salt.
It doesn't matter what it is, it's a Samsung defect somewhere with all notes it appears.
I don't think anyone knows exactly, I don't think Samsung will disclose it's defects, all we should care about is they acknowledge their mistake whatever it is.
Frankly I don't care what it is, it's still Samsung's fault and your note display will eventually show this as well. I've seen so many already, I thought mine was perfect untill it's not and happens overnight almost.
Hey everyone.
This problem exists, and you can change the display under a warranty or insurance.
"But if you don't have any of those here is a quick & tested fix for the issue known as "Glue Gate
Leave the phone under direct sunlight for over an hour and boom, all of that stuff will disappear.
Cheers.
Getting similar issue on my note 20 ultra.
jsusang said:
Samsung possibly scotch-taped our phones? lol.
Haven't had any issues w/ my N20U.
Do y'all have screen protectors on your phone that have glue gate?
Click to expand...
Click to collapse
It may be related to a jig or process used in manufacturing the display. Maybe an incomplete UV cure but not sure what if anything display component related is found in that rectangle.
It may be a stiffener or a damping component of the display. Interesting... and very annoying.
The defect may be only present in certain batches.
I'm even more glad I stayed with the N10+'s. Samsung's got sloppy after that, lots of different problems in multiple models. Pretty sad that Samsung can't stop dropping balls. Even their designs suck now, but look at all those glowing reviews. Fake news, fake news everywhere...
My N20U (Android 12, One UI 4.1, latest update: Sept. 2022) does not have any display issues...yet...but have noticed that when the brightness is set very low, the display is too bright.
Using N9 as daily driver instead of N20U.
@asimklicks
Sorry you have screen issues w/ your N20U.