Proximity sensor or ambient light sensor lumia 950

[Pavzanias]

Best to describe my problem is this Microsoft support thread:
Lumia 950xl proximity sensor - is that normal? - Microsoft Community
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Yes the phone is updated, did clean install, no funny applications, reset then hard reset. I am not using any screen protector, no tempered glass etc. phone is from the box.

I send it to servis, they said it its a software bug, its not hardware issue, same answer from Microsoft support....the problem remains and it suppose to start with .218 build.

The only solution so far is to turn off automatic brightness settings. Not a fan of this solution:angry:

Question is it possible to reverse phone to an older build? If not, should i try fast insider builds....what to chose??

Thanks for any helpful info.

 

[KefKef]

Yes, with help of WDRT (Windows Device Recovery Tool) you can revert to 10586.X version, and get the newest Firmware in the process.

 

[Pavzanias]

https://1drv.ms/i/s!AiOhOufIOmUqiI9L4CuV4r0DDRbwCA

please take a picture of your lumia (small blue light, eye sees it as red), if its working all the time, then i accept this light leak if not I have a potencial battery drainage. please check!

 

[KefKef]

There is no red or blue small light on my l950, as can be seen on this (not very good picture


Btw, I don't use Iris Scanner (Windows Hello).

 

[Pavzanias]

do you have set auto brightness?

 

[KefKef]

Yes, always.

In complete darness I can see absolutelly nothing with neked eyes (maybe it's my eyes

The camera sees it as a red dot, but picture processing makes it look as a white dot.


When I lower the darkness in post processing it becomes a red dot as seen on camera viewer


So yes, the red dot exists, only I cannot see it with necked eyes, nor the camera sees it in partly lit environment, sees it only in complete darkness. Probably my sensor emits much lower/weaker light than yours.

Just to add another observation, since I use Auto Brightness I set it, with settings slider, to maximum.

 

[Pavzanias]

You helped me, thank you. So the light sensor is active all the time, in my case looks like a poor quality, however it does work what it suppose and as I can observe, my battery life is not affected so I decided to live with this beauty mistake.
Thanks again.