What is Reddit's opinion of Display Tester?

This app will allow you to easily test for a variety of screen problems, including burn-in.

The app is free with a small banner ad at the bottom of the menu screen. It is $1.50 if you want the pro version. The free version is more than enough to test your screen. It also includes tools to help fix burn-in, but do not use them unless you are 100% sure it is burn-in because it can make your screen worse otherwise. (See below post).

My Pixel 2 XL has no burn-in, thankfully. I have about 26 hours of SOT since it arrived on Wednesday.

>How is it that a 3yo OLED screen is pissing all over this new one?

Your screen might be defective.

Try using Display Tester and doing the color banding test.

My Pixel 2 XL did better than my Nexus 6, but slightly worse than my Nexus 9.

Keep in mind that black clipping/crush can absolutely be modified somewhat by software settings. You can easily see this by messing with the brightness.

It's not an immediate fix; burn-in occurs over time. Honestly, it might not fix it, but it may prevent it from happening further.

You could give this a try also...but at your own risk.

https://play.google.com/store/apps/details?id=com.gombosdev.displaytester

My goto app for testing out a phone's display is display tester:

https://play.google.com/store/apps/details?id=com.gombosdev.displaytester&hl=en

The solid color feature lets you check different colors (gray being the easiest one to stop uniformity issues with), supports immersive mode so you can do the full screen, and has a swipe up/down gesture to check various brightness levels.

Almost all capacitive touch screens support detecting the magnitude of the press from a finger (or stylus, etc). Most software packages until Apple's update that included 3D touch just set a threshold for that pressure value that said something along the lines of "if the pressure is over 25% of the maximum pressure the screen can detect, count that as a press". You can see the raw press values in apps like Display Tester if you go to Basics > Touch Pressure Test. I've always been surprised that more devices didn't hop on the 3D touch idea earlier, since almost every device with a capacitive touch display has the ability to support it through a software change.

Agreed, a low-bitrate video is not a good reference for screen testing. Here's a gradient test image:

http://www.bealecorner.org/red/test-patterns/Gradient-16bit.png

Also there's the Display Tester app.

I downloaded this app to check mine. There's a setting to make the bottom bar disappear and you can scroll through different colors adjusting the brightness on each.

Test your device with scene guard removed by using mentioned application. Because glass will have flare effect especially gorilla glass 3 has more flare than any other in premium samsung mobiles they use better glass on panel with different thickness of glass and due to curved glasses messier people don't have tempered glasses so flare is less visible. Which means it is more visible that pixels will be turned off. And to answer the question the display is normal super amoled and yes pixels do turn off on pure black content that means hex value should be absolutely black. Problem with panel is the natural mode is too dull if it is not liking to your taste then try to use amoled photo or cinema mode. Google is there's a way. https://play.google.com/store/apps/details?id=com.gombosdev.displaytester

I used an app that someone else recommended on this subreddit. It's called Display Tester, and the free version seems like more than enough to test for issues.

Link: https://play.google.com/store/apps/details?id=com.gombosdev.displaytester&hl=en

Display tester. You can use it to show a few solid colors (notably white and gray for looking for hue/tinting issues or dead pixels with other colors) and the white and black saturation are useful.

Aluminium 64GB, build date Nov. 5th, ordered from Google on Nov. 23rd. I used the Display Tester app to test - used a solid gray background, on which the hue was visible at all brightness levels, but it was particularly bad at lower brightness.

Other than this tinting issue, the device is flawless, which is why I'm super bummed about having to RMA.

Unfortunately, I can't unsee...

Go into a dark room, put on a pure grey background (Display Tester works well for this) and turn your brightness all the way down. This will help you see if you have pink tinting on your screen.

I used this one: https://play.google.com/store/apps/details?id=com.gombosdev.displaytester

There may be others out there.

I paid particular attention to grey at brightness between 0% and 20%. No graininess.

Can you guess which Nexus 6P display has color banding issues?

I just received my RMA today and thankfully it doesn't suffer from banding issues as bad as my original one.

As you can see from the image above, banding is most visible on dark/gray backgrounds especially on high brightness in low-light ambient environments.

Both displays are on max brightness with adaptive brightness turned off, I chalk up the differences in brightness with an educated guess that the backlight uniformity is not the same on both of these.

Tools for testing for for banding:

Any 2K image that is dark, grey
Display tester from the Play Store

Banding is present using #2 above on both because I don't think the res image being used by the app in fact 2K, I think it's 1080p. However, it is a good starting point for most. I hope this helps someone.

I think they optimized it. If you don't have the update installed yet, get this Display Tester App and see what the smallest number is you can see in the black saturation test. At full brightness with adaptive display it goes down to 5, I do not think it was the case before, at 10 percent brightness it goes down to 11.

Edit: With natural colors it only shows 7 at full brightness, while 10 is still the limit at 10% brightness. At 0% basically everything is black.

Edit 2: That's on the Pixel 3 not XL

If you are allowed to install apps, can you install display tester and see if the AMOLED panel is even on gray/white or if it has parts that are yellower/greener or pinker? And is there a screen door effect?

I ordered the Oneplus One about a year ago and I RMA'd it after a week for a few reasons. Here's a list of things I didn't like about the Oneplus One.

The size: It was just too big for one handed usage. Nexus 4 just happens to have the perfect size for me and my everyday use. My next phone's screen size will definitely be 5-5.2 inch at max.

The shape: The OPO has sharper edges than the well rounded Nexus 4 and therefore feels worse in my opinion. I noticed the corners a lot.

Speaker position: Not saying speakers on the back are better but I didn't like them on the bottom either. I sometimes watch videos and play games in landscape mode and would accidentally block the sound with the way I am holding the device.

Vibration: The vibration doesn't feel as 'premium' as on the Nexus 4. Feels kind of cheap and I immediately noticed it when I first booted up the OPO.

Screen tearing/microstutters: Scrolling felt completely different, not smooth at all. I thought it might be kernel related but I flashed cm11 and locked the CPU and GPU clock to the maximum and it didn't help .After a while I found out why: The display has 63hz but the system refresh rate is locked at 60. This leads to micro stutters which are unbearable IMHO. Put the devices next to each other, download this app and swipe around in it and you will see what I mean.

If you can connive the drawbacks - keep it If not - get a small power bank and never worry about battery life again

Hopefully this helped you make you your mind. :-)

https://play.google.com/store/apps/details?id=com.gombosdev.displaytester

It could be image persistence which is more common than burn-in. The app above can reverse it to a certain point by displaying noise patterns. You can try the premium version for 30 minutes and if it doesn't help you can refund the 1.5 $ it costs.

Your screen doesn't look bad. The picture quality is not so great, tiny bit blurry and yes, there is a tiny amount of green tint.

If you want to test the display, download Display Tester using THIS link.

Go to Tests, select Burn-in and dial in something close to dark grey, like Red: #1B, Green: #1B, Blue: #1B.

Go into a dark room and try to take a picture of it like that. This is also good to see if you have issue with the camera cutout. Some of us had a dark bar going from the front camera to the right of the device.

If the only issue is the green tint, then you can change the calibration in the setting to make it better.

Thank God. Can you run this app and see what black box you can see last? Go to basics at the top then find "banding, contrast, saturation". Scroll over till you see the black screen with the boxes then swipe up till it says brightness is 100%. I'm on the April patch on boosted color mode and I can see 27-7. Anything under 7 is black

https://play.google.com/store/apps/details?id=com.gombosdev.displaytester

First step is to install the Display Tester app which gives you easy access to a bunch of test screens and charts, along with gestures to adjust screen brightness from inside the app.

>how do you fix a problem via software update that only affects some users (my Pixel 2 XL has no visible crushing)

I have never once seen proof of the existence of a Pixel 2 XL without any black crush. Most people just do not realize either what it is or that its effect varies depending on what you are viewing.

Download Display Tester and do the Black Saturation Test (This picture is for reference. Use the app, not this picture.) at 100% brightness is a completely dark room.

Most people will see 4-6, depending on which color mode they are using.

Unless you can see 1 (0 is true black and should not be visible), you have black crush.

Display tester has a test which allows you to look for dead response spots on the screen.

It's not an exact science but might help identify issues for anyone with a genuine hardware problem

https://play.google.com/store/apps/details?id=com.gombosdev.displaytester&hl=en_GB

I personally don't see the darker vertical line you have shared here. It might be I am going blind or maybe its the quality of the video, either way the reported screen bandings that I have seen online are very obvious and your video doesn't make it look like that to me at least

You might want to try the Display Tester app from the play store to do some more tests on the quality of the screen at different brightness levels to investigate even further.

When i was testing mine i was told to try a 1/3 brightness, without adaptive brightness on. Other ways to help identify it is by using a pure white image, or a 18% grey image. Ill link a few apps I used to test mine.

App 1

App 2

Hi there! Some details would be helpful, for example your build version and some test results, I recommend Display Tester, they have a very useful test.

And since it's only 3 months it should be easy for you to get a replacement, especially considering you haven't done any modifications.

Good luck!

Try using this app:

https://play.google.com/store/apps/details?id=com.gombosdev.displaytester

Run the burn in repair for an hour and see if it helps.

If it does, you might keep in running out daily for a week or two to break the panel in a bit and hello prevent future burn in.

I think the proximity sensors are located a bit higher so it's probably not that.

https://play.google.com/store/apps/details?id=com.gombosdev.displaytester

Try this app and see whether they appear on solid colors.

Since I'm a graphic artist, photo manipulator and photo retoucher, coIor correcting is what I do everyday. So I noticed it righaway after using a gray wallpaper and when sliding to the notification slowly. Was surprised ther was a magenta tint. After using this app to test I have confirmed it.

Now all I can do was kust sigh... 😔

Hello.

I bought a M12 in July for my mother. A few days ago the phone started having little problems, the screen becomes unresponsive for a while every now and then and doesn't respond to

Already tried rebooting and using the Display Tester app ( https://play.google.com/store/apps/details?id=com.gombosdev.displaytester ), which found no problems at all.

Is this a known issues? Is there a known fix? Please help.

Are you suggesting that this randomly happens or does it happen all the time?
if it randomly happens then do what the previous comment mentioned, but if the thing happens all the time then I advise you to download this app: Display Tester

Go to the test tab and select touch screen test. After which you need to swipe the area of the screen where the touch seems to be irresponsive. If you fail to get the green pixels in the said area then my friend, you need a new display.

No clue but I read a few reports of Mi 10 owners getting the same issue after only 2-3 months (no photos there tought).

You can check the condition with this app:

https://play.google.com/store/apps/details?id=com.gombosdev.displaytester

Try to go in a 100% dark room, and set it to different colors with different brightnesses

People can download the free Display Tester app linked below and you can easily view the brightness levels of full screen red green blue grey whites blacks, etc. to check your display.

https://play.google.com/store/apps/details?id=com.gombosdev.displaytester&hl=en_US&gl=US

The S7 I have is consistent across the display with no abnormalities or tinting. I would say the color balance is a close to neutral as possible when compared to my xrite iDisplay1 calibrated monitors on the PC.

In fact I went through a bunch of photos on both the tab s7 and my dell 24" monitor side by side and they are almost exactly the same in all colors and details.

Of course, there is also the possibility of manufacturing variances that are causing some to be out of spec, but I would think there is some level of QA/display testing before they are qualified for shipment.

And make sure your blue light filter is off as someone else mentioned.

People should download the free Display Tester app linked below and you can easily view the brightness levels of full screen red green blue grey whites blacks, etc. to check your display.

https://play.google.com/store/apps/details?id=com.gombosdev.displaytester&hl=en_US&gl=US

The S7 (not the plus) I have is consistent across the display with no abnormalities or tinting. I would say the color balance is a close to neutral as possible when compared to my xrite iDisplay1 calibrated monitors on the PC.

In fact I went through a bunch of photos on both the tab s7 and my dell 24" monitor side by side and they are almost exactly the same in all colors and details.

Problems with touchscreen is a reported issue for some fe's, updates have been sent to make it better, but some phones have not gotten the november update even though it's december now.

Overheating, i have not seen that as a common problem of fe, seems like a more serious problem to me. Hope he's using charger that came with phone.

I would check setting, check the apps, disable as much as possible temporarily, go to settings device care check optimize and go to memory and clean now, then restart phone.

Apps like this https://play.google.com/store/apps/details?id=com.gombosdev.displaytester

For screen test.

I just got my Pixel 4a today and for me it is not exactly a green tint. The display itself is more warmer than Samsung & Co.
My display is on the lower third darker than on the upper area. I could not identify an green/yellow tint. For me it looks like the color calibration is off, so the lower third is more like a 'crushed black'. Also it completely disappears if the brightness hits 50% and on every color. Not like the green/yellow tint which is always visible on certain colors no matter the brightness. Not sure if there will be an update for that but apparently the display uses an Samsung panel, so nearly every OEM uses those. You can't escape this issue as long as you want an OLED display.

Pixel 4a Screen

Tested the display with the Display Tester app.

Go to tests
BrunIn detection
Set Red, Green and Blue to 11 and brightness to 10-12%

From my experience reviewers will not say something about those issues in reviews. Which is sad tbh. For example look for the recently released S20 FE.

I used the dark grey image from the defective pixel detection test in this app:

https://play.google.com/store/apps/details?id=com.gombosdev.displaytester

And the photo was taken with the brightness all the way down in a pitch black room.

Just so you know I have since received a replacement unit from OnePlus with the same manufacture date as my previous unit, and the display is near perfect in uniformity. There is a slight darkening of the status bar area near the hole punch, but I think this is an issue that cannot be resolved and is only visible in this very specific test scenario. I'm very happy with the new unit and will be keeping it.

This app has fixed it for me, but it always comes back, worse when the phone is hot:

https://play.google.com/store/apps/details?id=com.gombosdev.displaytester

No affiliation with the app other than it worked for me. Use at your own risk of course.

So your case seems a lot more "pronounced" than mine. I'm noticing in the Home screen and white text but at the same time if I try a display test app, such as this the color calibration seems correct to my eyes also when viewing a total white screen.

I don't know what to think, to be honest!

Try download this

https://play.google.com/store/apps/details?id=com.gombosdev.displaytester

Go to Tests.. Burn in detection and play around with various settings and see if the yellow goes away or it stays?

Yep, I had the exact same issue with my 3a after two weeks.

You can download this screen tester app and use the "Touch screen test" to further confirm the issue. The result will probably show everything green except for the column that covers the area where the "d" key is on most keyboards.

I RMA's my phone through the retailer I bought it from (Germany) and got a fully new device as replacement. So far, I haven't had any issues again.

https://play.google.com/store/apps/details?id=com.gombosdev.displaytester

I was skeptical when I tried it, but the repairs actually seem to work! Black & white scrolling bars, white noise, gray noise, etc. It says proceed at your own risk, but it worked for me.

It's worth mentioning that this thing, being an LCD screen, has ghost images on it most of the time unless I run one of these.

Have you heard of/tried using this app?

https://play.google.com/store/apps/details?id=com.gombosdev.displaytester

On the full version there's something you can do to try and correct image retention / burn-in.

If you're still willing to stick to this particular pixel, I'd highly recommend it.

You can also download Display Tester that contains the same pattern under its Black Saturation test and you can change display brightness in real time by sliding up and down:

https://play.google.com/store/apps/details?id=com.gombosdev.displaytester&hl=en_US

Try the Display Tester app with the same pattern under Black Saturation:

https://play.google.com/store/apps/details?id=com.gombosdev.displaytester&hl=en_US

You more then likely have image retention and not actual burn in. I use this app, although there are a ton that do the same thing, you run the scrolling bars burn in repair for however long you want and it should fix it. https://play.google.com/store/apps/details?id=com.gombosdev.displaytester

This display tester app has a few modes to test the multi touch and other touch related things. See if it's detecting touches when you aren't doing anything. If it is, you have a hardware problem with the digitizer.

That looks like a dead pixel alright! time to initiate the RMA process I presume :-(

Edit: Download the Display Tester and investigate further with the solid colors see if it persists.

Was there any retention? Mine was so bad that it showed in full screen YouTube videos... Can you check the display tester app?

Settings-> immersive

Most noticeable on gray, red and white.

I'd really appreciate it if you could check. I just sent back my 2xl for this but I'd like to reorder if it can be fixed.

Use: https://play.google.com/store/apps/details?id=com.gombosdev.displaytester&hl=en

Then do the defective pixel test, swipe to grey, and look where the menu/nav bar used to be to see if its there.

I can't really see the grain or if I can it isn't bothersome. Backlighting on mine is fine tho. Colors look wonky coming from my 6p but it reminds me of when I turned on sRGB on it. I tested my display with this.

Yes, it's a big problem. I just attempted to send mine in to LG for repair, twice. Both times all they did was wipe the software.

There is hope though. Try this app: https://play.google.com/store/apps/details?id=com.gombosdev.displaytester

I've tried a few but none improved anything except the one above.

I have a 10/22 device and have pink discoloration. I have found the best way to spot it is Display Tester Viewing Angle test. It has pink and white rectangles. You can see the strength variation of the pink rectangles to see where it's stronger or weaker.

For me, it's along the top and right side that it's more pink. It's very weak pink on the bottom left side. Edit: Also now noticing a yellow blotch around the bottom left, which is probably leading to the weaker pink in that area.

https://goo.gl/photos/Zd2kZLYriYx1Yhv67

Please download display tester:

https://play.google.com/store/apps/details?id=com.gombosdev.displaytester

And report any cross-hatching, banding or degree of uneven display you see on gray screens.

It is a good phone and I like it a lot, but I think it is incredibly disingenuous to claim that it is "absurdly close to being perfect" when it has a laundry list of real issues, including but not limited to:

-Black Crush

-Black Smear

-Blue Shift

-Non-tilted color-shift at different brightness levels

-Grain

-Touch screen sensitivity problems

-Slow charging

-Microphone problems when recording video

-Burn-in

-Poor color calibration

Some of these problems vary from unit to unit, but some of them are inherent to the device (such as slow charging and black crush). If you reply with "My device is perfect and has none of these problems", then you are either: wrong or lying. Take your pick.

Edit: If you downvote me for posting about real problems with the phone, you are an ass-kissing fanboy.

My goal is not to just bad mouth the Pixel 2 XL, but consumers deserve to know what they are getting into. They are not going to get a perfect phone, even if it is the perfect phone for them.

Proof of every issue I have mentioned (Except screen grain. Every picture of it looks like it's just caused by a shitty camera.):

Install Display Tester. Look at the Black Saturation test. Unless you can clearly see the square marked 1, you have black crush. (Spoiler: You have black crush).

Use Display Tester and go to the Touch Screen test. Poke (not swipe) the edges. Your screen will have issues picking up the touches. Google confirms this is due to software, so every phone is affected.

Appy Geek is the app I have that shows black smear the best when set to night mode. See how the black boxes/gray bars look like they are slightly changing shape and/or rubber banding move than you would expect from just scrolling the screen? The phone camera does a poor job of showing this due to limited FPS, and the effect is more noticeable in person. Your panel does this, because all OLEDs do this. It is an inherent quality of the phone, whether you realized it or not.

The microphone is horrible when recording video, though this is somewhat fixed in newer patches. Pre-Patch (and pre-cleaning) vs Post-Patch

Though it varies from panel to panel, blue shift is provably real. Every OLED has Blue Shift. It is impossible for your panel to have none.

Despite claiming to support PD 2.0, the Pixel 2 XL does not properly charge at 18W.

Google claims that burn-in is comparable to other smartphones, but doubles warranty and makes changes to fix it. Why would they fix an issue that doesn't exist? The Verge found burn-in after a week of use.

Phone Arena's benchmarks shows that the Pixel 2 XL is not accurately displaying colors. Keep in mind that you will need a good monitor which is properly calibrated to see the difference between "target" and "actual" on the color accuracy benchmark, but there is a difference. Yellow and Red are the worst offenders. If you cannot see it, your equipment is not good enough.

Here's the link: https://play.google.com/store/apps/details?id=com.gombosdev.displaytester

It's the Black Saturation test in the Display Tester app

https://play.google.com/store/apps/details?id=com.gombosdev.displaytester&hl=en

Basic options, dead pixel tester

Show us the results of the touch screen test in this; https://play.google.com/store/apps/details?id=com.gombosdev.displaytester

https://play.google.com/store/apps/details?id=com.gombosdev.displaytester&hl=en

Get this app and run the full screen test.

I wanna see your screen completly white... this is insane

Install Display Tester. Look at the Black Saturation test. Unless you can clearly see the square marked 1, you have black crush. (Spoiler: You have black crush).

Use Display Tester and go to the Touch Screen test. Poke (not swipe) the edges. Your screen will have issues picking up the touches. Google confirms this is due to software, so every phone is affected.

Appy Geek is the app I have that shows black smear the best when set to night mode. See how the black boxes/gray bars look like they are slightly changing shape and/or rubber banding move than you would expect from just scrolling the screen? The phone camera does a poor job of showing this due to limited FPS, and the effect is more noticeable in person. Your panel does this, because all OLEDs do this. It is an inherent quality of the phone, whether you realized it or not.

The microphone is horrible when recording video, though this is somewhat fixed in newer patches. Pre-Patch (and pre-cleaning) vs Post-Patch

Though it varies from panel to panel, blue shift is provably real. Every OLED has Blue Shift. It is impossible for your panel to have none.

Despite claiming to support PD 2.0, the Pixel 2 XL does not properly charge at 18W.

Google claims that burn-in is comparable to other smartphones, but doubles warranty and makes changes to fix it. Why would they fix an issue that doesn't exist? The Verge found burn-in after a week of use.

Phone Arena's benchmarks shows that the Pixel 2 XL is not accurately displaying colors. Keep in mind that you will need a good monitor which is properly calibrated to see the difference between "target" and "actual" on the color accuracy benchmark, but there is a difference. Yellow and Red are the worst offenders. If you cannot see it, your equipment is not good enough.

So which is? Are you wrong? Or are you a liar?

"Display Tester" by Braintrapp.

https://play.google.com/store/apps/details?id=com.gombosdev.displaytester&hl=en

Display Tester will give you the patterns you need to check for most screen issues.

Here you go https://play.google.com/store/apps/details?id=com.gombosdev.displaytester

https://play.google.com/store/apps/details?id=com.gombosdev.displaytester&hl=en

https://play.google.com/store/apps/details?id=com.gombosdev.displaytester

You might need to purchase the app though..

The pro version of Display Tester has burn in repair.

https://webkit.org/blog-files/color-gamut/

Try this. On my S21 Ultra, there is a difference in all comparisons. The image you have posted is a plain red square though, but I'd reckon that that has something to do with software.

I remember that Firefox can show the expanded color spaces while other browsers couldn't. Don't know if that has changed though.

Although, this app also has a wide gamut test and it still shows the solid square.

🤷🏻‍♂️ Weird.

https://play.google.com/store/apps/details?id=com.gombosdev.displaytester

This app is btw very helpful in finding any burn in. The grey screen they use is excellent https://play.google.com/store/apps/details?id=com.gombosdev.displaytester

Try this app: https://play.google.com/store/apps/details?id=com.gombosdev.displaytester

On my 7T Pro it shows that wide colour gamut is supported as I can read the text in the sample picture.

https://imgur.com/a/0mlMbKs Test was done using this app https://play.google.com/store/apps/details?id=com.gombosdev.displaytester&hl=en_US You can even slide the red and blue to zero and then start sliding up the green and you'll see uneven colors and it'll show you how bad these panels are.