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iPhone 12 Pro iPhone 12 Pro “raised blacks” display

DeanPSN said:
Received my 12 PM replacement today.
Display is perfectly uniform and this whites are near perfect.

Also this has 0 issues with raised blacks.
Tested it in pitch dark room with my previous 12 PM.

Old one has horrible green glow during boot sequence, while new one is completely black, no issues whatsoever.

New one:
SN: G0ND
Production week: 51
Display: G9Q

Old one:
SN: F2LD
Production week: 41
Display: G9N

Also the old one with a supposedly perfect G9N display suffered from horrible image retention.

Very happy with the replacement, this is a keeper.
Click to expand...
Means nothing since my defective units were all G0ND and all late week manufacturing. Current one is F2LD and green tint is less or eliminated as far as my eyes can tell. However playing the pitch black amoled 10 hour video on various settings as per mentioned on this thread results in raised blacks. Not having a dig at you but some people don’t see raised blacks. For me it no longer justified replacements. However green tint and damaged frames were. My current gold frame has a hairline mark on the top like a faint line only visible at a certain angle. I’m over it. Roll on next iPhone 13 or 14
 
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I've done some more testing:
I've updated the phone to 14.3 and done tests with two different videos, both all black:


This gave different results than the previous test. Now it only shows at 25% and lower. It is also different between these two. It is worse/more prominent in the first video. There is also difference in the second one when I choose different quality (420p/60, 1080p/60 and 2160/60). Could this be proof of a software problem?
 
On the Mac I use myself a Chinese app equivalent to 3utools.

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www.i4.cn www.i4.cn

Watch the YouTube video posted few posts above to see how to use it as its all in Chinese.
 
Brighton Billy said:
Thanks.

LG display, no raised blacks.
Click to expand...
Same here, my iPhone 12 GVC (LG) display is fine and have little cooler screen tone than my iPhone 12 Pro G9P (Samsung) display with raised black issue and warmer screen. All my iPhone is week 49 production.
 
adrn28 said:
Same here, my iPhone 12 GVC (LG) display is fine and have little cooler screen tone than my iPhone 12 Pro G9P (Samsung) display with raised black issue and warmer screen. All my iPhone is week 49 production.
Click to expand...

Yup same, this regular 12 is still warm but not as bad as my first one. Using the colour tint method i can get it to the perfect cooler white colour i want.
 
Limeybastid said:
Question goes begging does the raised black issue effect any LG panels ? If so it’s software issue.
Click to expand...

Yep you're right. Unfortunately i don't think many know how to check who makes their display. I just learned yesterday.

3utools on Windows if anyone is wondering.

Samsung is G9N/G9P/G9Q

LG Display is GVC/GH
 
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Production week: 41
Display: G9P
Raised black issue: Yes

In my opinion we should collect the information of all thread members in a way like this.
 
cableguy84 said:
My gut feeling is a hardware issue. Surely a software issue would’ve been resolved by now but who knows let’s see
Click to expand...
I'm fairly certain this is a power management issue. In low brightness, the power driver doesn't know where to send all the extra power to, so it uses that to light up the black pixels. For the green tint issues in the 11Pro and Pro Max, they took more than 6 months to fix the issue, finally resolving it with iOS13.6.1
 
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nanzereus said:
I'm fairly certain this is a power management issue. In low brightness, the power driver doesn't know where to send all the extra power to, so it uses that to light up the black pixels. For the green tint issues in the 11Pro and Pro Max, they took more than 6 months to fix the issue, finally resolving it with iOS13.6.1
Click to expand...
Very good point.
 
KillerEngine said:
Device #1:
12 PM
SN: F2M***
Screen: G9Q
Week: 49 (2020)
--> Raised Blacks (but not very procounced, green tint is not really an issue)

Device #2:
12 PM
SN: G0N***
Week: 01 (2021)
Screen: G9N
--> Raised Blacks (little less procounced than on device #1, turns a little bit more green when at 0 % brightness and slightly above)

By the way: Both devices are behaving exactly the same in the way they glow or flicker. They even stop glowing or start shutting off their pixels at the exakt same brightness level (1-% accuracy, set via siri) when showing a black picture or video. This lets me believe that there's a chance that something can be done about that...
Click to expand...

Yup both those are Samsung displays. Interesting.

LG might be the better screens.
 
Hno7 said:
I just got a call from Apple. The support staff has now received a message from the engineers that they are aware of the problem and are working on it at full speed. Whether software or hardware is still unclear. A software update will either be released or an exchange program will be offered on support.apple.com in the near future.
Click to expand...
2 months in, and we still have nothing :(
 
KillerEngine said:
You can’t tell the maker of the screen from your serial number. You need a special
Tool (like 3uTools) to read that information.
Click to expand...
Cool. I’m interested but not that interested. I thought after enough people used that tools Program they could start gauging it by serial numbers. If that’s not the case then I’m good.
 
Sam in SoCal said:
My serial number starts with G6T. Since you seem knowledgeable about which displays are which can you tell me which one mine is?
Click to expand...

It goes by the serial # of your display not the actual device. You can download 3utools on a Windows PC and it will tell you all this information.

Samsung is G9N/G9P/G9Q

LG Display is GVC/GH

Here is what it looks like:

Screenshot (26).png
3u1 (2).png
 
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Sam in SoCal said:
Cool. I’m interested but not that interested. I thought after enough people used that tools Program they could start gauging it by serial numbers. If that’s not the case then I’m good.
Click to expand...
They did. The screen serial numbers of so called “bad” screens were shown on the yellow tint thread. But over a short time it was proved that it meant nothing in relation of identifying if said serial is bad or not.
 
Limeybastid said:
But over a short time it was proved that it meant nothing in relation of identifying if said serial is bad or not.
Click to expand...
I think there is quite noticeable difference between G9P and G9N screens where G9N's have almost perfect uniformity but they are a little warmer while G9P's are cooler but uniformity is utter crap. We got 2 new 12 Pro's and one was with N and other with P screen and that P is really horrible in terms of uniformity but N is perfect. I tried to order new one and it also came with P screen that is even worse. But both P-screens are pretty cool, so I guess those who hate warm yellowish screen like them. I'm not just sure if anyone preferring those cooler one have really checked uniformity well enough?

Also anyone got 12 Pro with rear camera serial number starting with D (instead of usual G)?

First two we got were both with rear camera serial starting with G and they seemed equally good but last one came with D serial camera and it is totally different in terms of photo quality and can be easily seen side by side with G serial camera.
Just wondering if those D serial cameras are from some third party vendor with different specs to fill up the void for parts in current situation...?

Please check that with 3u Tools what rear camera serial is in your 12 Pro?
It is listed on the same page where you find OLED-panel serial number.
 
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