@khanyt it is always difficult to determine what ha failed on anything that had water damage, even minor damage, that was not readily addressed. A broken screen is never a good thing neither.. I do know the AMOLED screens are really expensive. The display is one the good thing about those phone. Anyhow try to dial ****#0589#*** to check the Light Sensor Test Mode. Let us know what it tells you. It does not look like you can turn it off, but you could try to restart your phone in safe mode and maybe that prevents that sensor to come on. See if that makes a difference.
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=== Update (10/13/23) ===
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@khanyt ok so I know exactly what you are saying and I promise I'll be out of your questions right after this. Anyway, iFixit for whatever reason does not let me post the proper number to dial for the Light sensor test. Let's see if this works. The code to dial is
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[image|3100895]
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Or you can dial this code
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[image|3100906]
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which will get you into the hardware diagnostic menu.
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If that does not work, you may have to check a little deeper. Disassemble your phone and check the sensors according to Samsung's Flowchart
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[image|3100901]
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Use this document [document|31876] to determine where the components are that need to be tested
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IF any of this seems to be a daunting task or if you don't have the tools to perform these tests, the best might be to do an online search for someone who performs board level repair in your region. BTW here are [link|https://www.samsung.com/us/support/answer/ANS00062983/|Samsung's instruction] on how to place your phone into safe mode
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I am not concerned about the difficulty to answer your question, so no worries. Ok, I am out. Best of luck with your repair!
@khanyt it is always difficult to determine what ha failed on anything that had water damage, even minor damage, that was not readily addressed. A broken screen is never a good thing neither.. I do know the AMOLED screens are really expensive. The display is one the good thing about those phone. Anyhow try to dial ****#0589#*** to check the Light Sensor Test Mode. Let us know what it tells you. It does not look like you can turn it off, but you could try to restart your phone in safe mode and maybe that prevents that sensor to come on. See if that makes a difference.