Dark rectangle on the screen

[sekatore]

Please tell us some basic information before asking for help:
Model Name: Zenfon 7
Firmware Version: WW_29.13.7.24
Rooted or not: not
Frequency of Occurrence: always on brighter day
APP Name & APP Version (If your issue relates to the app):
In addition to information above, please also provide as much details as you can, e.g., using scenario, what troubleshooting you've already done, screenshot, etc.
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Hello
Does anyone know or have something similar. When using my phone outside, I see a dark rectangle on the screen. What function does it perform? It is not a fingerprint scanner. It looks gross.

[CH_ASUS]

sekatore

Thank you for the answers.  I accepted this issue https://zentalk.asus.com/en/discussion/36175/screen-is-green-cant-fix-that-with-splendit#latest. but I do not accept the answer:

https://zentalk.asus.com/en/discussion/comment/120711#Comment_120711

Do you have a premium car with a hole in the roof prepared for the sunroof? 🙂

Generaly is visible always in daylight (less or more) .

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Then you may contact your local ASUS service or reseller.

[Tagion]

CH_ASUS

Hi

The OLED panel in ZenFone 7 is prepared for under-display fingerprint sensor. Of course, the phone itself does not employ it.

This phenomenon can be visible on all phones which have screens prepared or using under display fingerprint sensors and generally only visible in specific daylight conditions on light backgrounds.

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Do all Zenfone 7 units have that? I can't seem to spot this rectangle on mine

[sekatore]

CH_ASUS

https://zentalk.asus.com/en/discussion/comment/120884#Comment_120884

Then you may contact your local ASUS service or reseller.

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That is the problem. I always praised technical support and service in Asus and it's the first time I'm disappointed. I described those problems and sent it to technical suport (green tint and dark triangle). I got a reply - "send it to service center - thats all". So, I sent the phone to service (with technical support case number), after seven days it came back with a note saying "sorry for this ... it's ok".
By doing all that I wasted time that I could have used to return the phone to the reseller without problems. Now I can't do that any more. 

If technical support had told me "this is prepared for or that is a typical or modern feature", I would have sent the phone to reseller.
I think customer should be informed that such a feature exists beforehand and technical support should be better prepared.