Nexus 6P display black botch under certain conditions - Nexus 6P Q&A, Help & Troubleshooting

I started to notice uneven color or black botches under certain condition
the display look excellent during normal usage
- extreme whites & black are even and look fine, however the problem start to popup at dark grey just above the blacks i noticed a black botch in the lower display part
i detected the problem by doing the following
1- download (Full Screen Color Light)
2- Go to a dark room
3- set the screen color to dark grey, just above the black level
4- set the brightness to middle
5- noticed uneven gray color or black botches (similar to light bleed in Lcd)
Is this normal for super amoled display or should I RMA my device
note: issue isn't noticeable under normal light conditions

please help is everybody having this or should I RMA?

RMA the phone, that isn't normal.
Sent from my Nexus 6P

Not normal, I have seen the issue though from the Galaxy S2, Note 2 and Note 3. Im glad to report that on my Nexus 6P the black is uniform and deep.

EarlZ said:
Not normal, I have seen the issue though from the Galaxy S2, Note 2 and Note 3. Im glad to report that on my Nexus 6P the black is uniform and deep.
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Black is deep and uniform in mine too, however the problem appears in dark grey only, as if not all the AMOLED pixels lit all together, or the voltage isn't uniform
making this pattern
appreciate if anyone can provide a picture of his dark grey screen in a dark room

Related

Low brightness + nexus one = RED screen?

I had my nexus side by side with a Droid last night. And I noticed that when the AMOLED screen on the nexus dims down. it gets REALLY red and distorts the contrast/colors alot.
Is this normal? When my brightness is at a normal setting it looks great. its only when it gets dim. Im a little concerned.
its fine, thats just how AMOLED displays work.
I can't agree that it's fine ... if colour infidelity is part and parcel of AMOLED then maybe HTC should reconsider their use of it. I notice the red tint at all brightness levels but it's most noticeable at the lowest level.
I always have the brightness at 0% and automatic to off when not plugged in. Don't see any severe redness.
well, I guess it's not normal , I got my frist one with dead pixel but the color is bright so I did a refund as they recomended and buy a second one but this one came with redish screen..... I did the comparison and the one with the dead pix is a lot more brighter , so my luck sucks
This is my second nexus, both have pinkish hue when on lowest brightness
I haven't noticed any red/pink issues at any brightness with my phone, but I haven't done any side-by-side comparisons.
Call HTC support and see if this is a known problem they fix or if it is just part of a normal working Nexus One.
It's a part of a normal Nexus One. My friend had the red / pinkish hue on his screen and called HTC for a replacement. Once the replacement came, it was exactly the same hue. But with 50% brightness, it isn't noticeable. However, I'm probably the lucky one because I don't experience the 'problem' with 0% brightness on my Nexus.
Some nexus one don't have the red tint, I got 2 nexus one and one have the other doesn't show any red tint even at lowest brightness. I guess its just difference screen from difference suppliers.
This is my second nexus, both have pinkish hue when on lowest brightness
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I agree with this completely.

Blotches on screen visible under direct sunlight

It doesn't seem to be a huge issue, but I'm curious as to if this is a defect on my phone or if it is common. When the screen is turned off or displaying dark images and I'm viewing it under bright sunlight, there are some black "blotches" visible. It looks very similar to what I saw on my old Galaxy Nexus screen when in a dark room and with the screen on, but it's visible in completely different conditions.
Is this normal for the type of AMOLED screen used in the Note 4?

[Q] Stretchy blacks in low brightness

When in low brightness the blacks get jelly like stretching effect when in motion. I notice this all the time, with text and whatever. Most noticeable if a picture has something dark surrounded by bright area, scroll up and down and see the block stretch like rubber. What's up with that and why haven't I seen it mentioned in any review.. Very obvious artifact.
Keisarinn said:
When in low brightness the blacks get jelly like stretching effect when in motion. I notice this all the time, with text and whatever. Most noticeable if a picture has something dark surrounded by bright area, scroll up and down and see the block stretch like rubber. What's up with that and why haven't I seen it mentioned in any review.. Very obvious artifact.
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I have this same problem. Anyone have any idea what it can be?
You're seeing the pixels turn on and off as they turn off for black. All amoleds do it. Usually more noticeable when the brightness is lowered and it is white on black.
There is no pure black color. Black pixels aren't off. Later I will try make some photos to show this. I don't have this in S5, where black and gray colors are perfect and looks like in every amoled LCD's should be.
on older devices(saw this with the note 2) black would be near-black(leaving a slight grey/greenish glow only visible in complete darkness)
with the note 4(don't know about S4/5 and note 3) they decided to enable "true" black, allowing the pixels to turn off completely when displaying black.
switching on/off takes a tiny bit longer than changing intensity, which causes visible ghosting.
this is only noticeable in very specific circumstances, so most people never see it happen.
Black color looks it like with sephia filter. I don't know what it is. I changed ROM-s and kernels, still this same. On S5 black color is beautiful, Note 4 looks terible, especially in dark rooms. See atachments.

How accurate are your display's black and white levels? Software fixes?

http://www.lagom.nl/lcd-test/black.php
I've always used the above link for testing how accurate my displays are. The tests on that site I've found most important in descending order are black level, white saturation, and contrast. (the gamma calibration test never seems to work well on phones)
The Axon 7 (A7) is my first AMOLED display. My old phone is the Nexus 5 (N5) with an IPS display.
On the black level test, squares 1-6 all blend with the black background on the A7, while the N5 only loses square 1 to the background. On white saturation, the A7's last visible square is 251, while on the N5 I can see up to 253. Finally, on the contrast test the A7 colours start at 2-3, with red and pink washing out the soonest at 21. On the N5 all the colours are visible at 1, and red and pink wash out at 25.
Through all these tests it seems the stock A7 AMOLED display is over saturated with poor contrast. On the stock ZTE firmware, the only display adjustments are in settings under "screen effects". Mine is set to Natural and Warm, but all settings here do not affect the test results.
I've read that after many complaints, OnePlus updated their firmware to give the OnePlus 3 special RGB calibration tools. Are there any apps that could do similar corrections on the Axon 7? Any rooted apps, or would CyanogenMod correct this?
It's becoming quite obvious when browsing photos or watching video, and especially takes away from the experience in dark movies.

Display lag causing a 'wavy' motion on dark themed apps/websites

Not sure if it's visible but I'm fairly certain that I can spot this. Check the attached gif. Notice how the lower three thumbnails lag while scrolling . This thing is slowly making me insane.
Any suggestions? Phone is pure stock, no modifications, miui 11 global 11.0.1.
yes, i can also spot wavy motion when using Instagram in dark mode with brightness low.
the edges of images give some black wavy shades on scrolling same occurs when we use in direct sunlight color are too sharp on full brightness under the sun
I think you speak about the big AMOLED weakness, that's "normal" and can't be fixed...
It's normal for AMOLED displays and VA Lcd displays.
when its complete black pixels turn off and it takes a while for them to turn on again and show the new color
less visible in higher brighnesses
Yeah i have this problem any solution to fix?
Its very simple. Because we have an OLED display the individual pixels can and will turn off to display a true black. But when that black pixel that was turned off needs to change color to for example green, the pixel will have to turn back on again. And this takes a few miliseconds (probably more than 15ms, but thats just my opinion) thats why you see ghosting/trail. We cant do anything about this. Better have true blacks then less ghosting and greyish blacks on other panels like LCD.

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