BOE Screen Issues

  • 2 December 2018
  • 17 replies
  • 5122 views

Userlevel 1
After having 2 LG green screens I finally got a BOE panel last week. I then checked it immediately in dark conditions and all looked good.

Fast forward 6 days and I'm now starting to notice a horrific screen uniformity issue (not green though) and my eye is constantly drawn to horrifically over zealous CABC (Content Adaptive Brightness Control) that is employed on this device.

I'll start with the uniformity issue.

Whilst I completely understand that all OLED panels, to some degree, have their issues with uniformity this BOE display is probably the 2nd worst I've ever seen. There are white bands running vertically up, I currently count 5 of them and they are unevenly spread. On top of this the entire bottom 3rd of the screen is lighter than the top 2/3rds. To be fair, this issue can only be seen using a 5-10% grey image and in low lighting conditions however, since I use my phone at night, it is still visible when using apps like XDA and Spotify which makes me doubt I'll be able to live with it.

The 2nd issue is a very difficult one to explain and it's not limited to the BOE display (both my LG panels exhibited this behaviour too.) The CABC is overly aggressive and, as far as I know, it cannot be turned off. This adaptive brightness can be seen working its horrible magic under this set of circumstances:

1) Go to YouTube app on your phone and apply night mode.

2) Start watching any video you please then switch to landscape mode.

3) Tilt the phone back to portrait position.

4) Now notice the dark patches in the comment section (mostly on the right edge of my screen). See them? Yeah? They shouldn't be there.

This is again a very specific scenario but I assure you what you see there is happening all the time, you just haven't noticed it. I've watched videos on youtube with dark grey backgrounds and white images on the screen and the CABC just goes mental, like it doesn't know how to process the information on the screen. It's ridiculous.

I've also had major artifacts appear on static grey images whilst checking the uniformity. The worst being a huge, moving black splodge with a tendril poking out from it that would move when I zoomed in on the grey picture!

Whilst I can hope that Huawei can fix this via a software update I fear that not enough people will notice it to report it.

So if you could check to see if following my steps work and report back, that would be greatly appreciated!

So close to returning this device but as I'm now out of my 14 day cooling off period I'm now stuck with this device for 2 years. I have 10 days left to return a faulty device but I'm not even sure it's worth playing the lottery with screen manufacturers AGAIN!

Thanks for sticking with me if you read all of that, feel free to let me know if you've had any issues with your BOE panel too, it'd be nice to know that I'm not the only one!

TL;DR : Screen uniformity at 5-10% grey is awful on BOE panel and the aggressive Adaptive Brightness causes artifacts on the edges of the screen that are extremely noticeable in videos (YouTube/Netflix)

17 replies

Userlevel 3
This is my problem with BOE screen after this i replacement and surprise new batch lg and now have hulk 😂

Userlevel 1
This is my problem with BOE screen after this i replacement and surprise new batch lg and now have hulk 😂


This is exactly the same as mine.

This isn't a screen issue, as far as I can tell, it's a software issue and it's what I was referring to when I mentioned the Content Adaptive Brightness Control.

The problem is that it's not illuminating the whole screen uniformly when it rears its ugly head. It can happen on static, one colour images as well as YouTube (videos and comment section).

The thing I can't understand is why.

If you look at your screen under a UV light (whilst the screen is off) that box of lighter colour (in the middle of your screen) shows up underneath the panel along with a larger box around it. This makes me think that it might be a hardware issue as what is under the screen is made visible by the CABC...

Either way, this is not acceptable for £900 device that I'll be paying £50pm for over 2 years.
Userlevel 3

This is my problem with BOE screen after this i replacement and surprise new batch lg and now have hulk 😂

This is exactly the same as mine.

This isn't a screen issue, as far as I can tell, it's a software issue and it's what I was referring to when I mentioned the Content Adaptive Brightness Control.

The problem is that it's not illuminating the whole screen uniformly when it rears its ugly head. It can happen on static, one colour images as well as YouTube (videos and comment section).

The thing I can't understand is why.

If you look at your screen under a UV light (whilst the screen is off) that box of lighter colour (in the middle of your screen) shows up underneath the panel along with a larger box around it. This makes me think that it might be a hardware issue as what is under the screen is made visible by the CABC...

Either way, this is not acceptable for £900 device that I'll be paying £50pm for over 2 years.

Yes that's correct best is after this i replacement again and now have again lg hulk from batch 18B09...
And now i don't know what is best now go again for 5th replacement or return and take different phone.....
Userlevel 7
Badge +6
Hi all,
Sorry to hear of the situation.
If you can please PM me with the IMEI and Build Number of the devices I would greatly appreciate it since it will facilitate opening a ticket on this matter.

Best wishes,
Max
After having 2 LG green screens I finally got a BOE panel last week. I then checked it immediately in dark conditions and all looked good.

Fast forward 6 days and I'm now starting to notice a horrific screen uniformity issue (not green though) and my eye is constantly drawn to horrifically over zealous CABC (Content Adaptive Brightness Control) that is employed on this device.

I'll start with the uniformity issue.

Whilst I completely understand that all OLED panels, to some degree, have their issues with uniformity this BOE display is probably the 2nd worst I've ever seen. There are white bands running vertically up, I currently count 5 of them and they are unevenly spread. On top of this the entire bottom 3rd of the screen is lighter than the top 2/3rds. To be fair, this issue can only be seen using a 5-10% grey image and in low lighting conditions however, since I use my phone at night, it is still visible when using apps like XDA and Spotify which makes me doubt I'll be able to live with it.

The 2nd issue is a very difficult one to explain and it's not limited to the BOE display (both my LG panels exhibited this behaviour too.) The CABC is overly aggressive and, as far as I know, it cannot be turned off. This adaptive brightness can be seen working its horrible magic under this set of circumstances:

1) Go to YouTube app on your phone and apply night mode.

2) Start watching any video you please then switch to landscape mode.

3) Tilt the phone back to portrait position.

4) Now notice the dark patches in the comment section (mostly on the right edge of my screen). See them? Yeah? They shouldn't be there.

This is again a very specific scenario but I assure you what you see there is happening all the time, you just haven't noticed it. I've watched videos on youtube with dark grey backgrounds and white images on the screen and the CABC just goes mental, like it doesn't know how to process the information on the screen. It's ridiculous.

I've also had major artifacts appear on static grey images whilst checking the uniformity. The worst being a huge, moving black splodge with a tendril poking out from it that would move when I zoomed in on the grey picture!

Whilst I can hope that Huawei can fix this via a software update I fear that not enough people will notice it to report it.

So if you could check to see if following my steps work and report back, that would be greatly appreciated!

So close to returning this device but as I'm now out of my 14 day cooling off period I'm now stuck with this device for 2 years. I have 10 days left to return a faulty device but I'm not even sure it's worth playing the lottery with screen manufacturers AGAIN!

Thanks for sticking with me if you read all of that, feel free to let me know if you've had any issues with your BOE panel too, it'd be nice to know that I'm not the only one!

TL;DR : Screen uniformity at 5-10% grey is awful on BOE panel and the aggressive Adaptive Brightness causes artifacts on the edges of the screen that are extremely noticeable in videos (YouTube/Netflix)

I have the exact same problem, and my Phone have an LG display. If you pull down the notificación bar after watching a full screen video on youtube, you'll clearly notice some grey patches on the dim background (mainly on the lower right corner). Very annoying for an expensive Phone like this one. Hopefully a software update will fix it.
I just typed in to you tube uniformity test and my screen also gave the same problem is this fixable with a software update or is this type of thing a hardware issue however my issues uniformity issues are nowhere near as bad as yours
Userlevel 7
Badge +11
Hi @rob009 and @N4T3,

Please PM @Max with your IMEI and Build Number, he can assist you.
Hi @rob009 and @N4T3,

Please PM @Max with your IMEI and Build Number, he can assist you.

OK Amy no problem
So I have had to replace my Mate 20 Pro because of the screen bleed issue twice. I finally got a BOE screen but I can't help but think that I have a really poor screen. The bottom half has a colder tint than the top half and text appears really dull on the lower quarter of the phone. I have checked it multiple times and got other people to also look and they all can see the same. Another thing is when I am watching certain videos I am getting horrendous colour banding. I never had this on the LG screens. I wondered if someone with the same phone could watch this video (https://youtu.be/tO01J-M3g0U) and see if they get the same banding and flickering as me at about 1:28 in the sky at that part of the video. I have my display on max resolution and the video set at 1440 hdr. I also found this video which shows exactly what my phone looks like: https://youtu.be/AUPe-z5ArfI (the bad one on the right)

I just feel like I'm getting tired of sending my phone back but also at the same time I paid a hell of a lot of money for something I'm not happy with. I'm also worried they won't look at the problem properly and will say there is nothing wrong with it. However I know it is not my imagination and the first 2 LG ones I had looked vastly better (apart from the obvious green edge bleeding obviously)

Any help or advice is appreciated.
Userlevel 7
Badge +7
You can request a refund from your retailer who may accept or offer an exchange for alt device.

I think you have been unlucky as the majority of mate 20 pro users have had no issue, it is MKBHD's peoples choice of 2018 after all !
It is outside of the 21 days for me to get a refund as I have been trying to get a decent replacement from Huawei. Although I may have been unlucky 3 times it is an issue many people face. A quick Google search will show that.
Userlevel 7
Badge +6
Hi all,

Please do not worry about this. If your newly purchased device has any issue, you can have it booked at our service center for testing.
Additionally, you can contact our green hotlines as our specialists would be more than happy to assist you in this matter.
We will handle this in accordance to the warranty policy, which is 2 years starting from the day of purchase.

Thank you for your cooperation and understanding,

Max
Yet there are many stories online where people are sending phones off and you are reporting that there is no issue even though there is an issue. I will have to send it back yet again and be without a phone I'm paying for yet again.
I fear I am going to be in same boat Nemoh88 I have already had 3 with the LG screen bleed. The latest one is still with Huawei after nearly a month and haven’t heard back when I’m getting it. I fear I will get the same issues with the next one or a similar one as reported by another user in the thread. I too am out of my refund or exchange with Vodafone as Huawei are taking such a long time. I been paying my contract each month and haven’t had a phone for most of it since release at end of October. I don’t know if we can get compensated for this? As it’s not Vodafone’s fault
Userlevel 7
Badge +6
Hi @Danleavo,

I would recommend to contact our hotline specialists in regards to your inquires.
For the UK region you can contact us via chat (at 08000886700 free of charge of course)

Hope you found this helpful.
Best wishes,
Max
Userlevel 3
Sorry to hear about these issues. I've checked my uniformity test on my boe screen and it seems fine although I've seen a few what looks like inconsistent colours e.g YouTube, where some parts look brighter or darker spot that doesn't move.

It's difficult to reproduce & some of these colours change depending on the angle of viewing. I have no major complaints, maybe I've got a fairly good model.

These companies, apple, Samsung, Nokia, Sony, etc from experience in the past pretty much sell us test technology & some with serious design faults which they can rarely fix. My replacement Mate 20 works fairly well after the green screen. I'm happy with it & everything is working well enough, as a smart phone, calls & media device, luckily!

My own smart tv ue55es8000 from 2012 is a great TV, expensive buy, great screen. Still going strong but far from perfect test tech or uniformity particularly on edges etc etc.

Hopefully my Huawei mate device will last the next 4 - 5 years like my last Xperia z2 as I've not the money to waste for recycled test tech with a better camera.

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