Dear all, according the information from Fairphone’s website the FP6 provides DC and PWM as dimming options for adjusting the brightness af the display.
This should not be in the dev settings…at least it isnt on the FP5. Havent checked this so far
I’ve checked both locations, normal settings and developer settings. Also used the search function in the settings menu, no success. Even when switching the phone language to english.
Could it be that the DC and PWM functionality is baked into the system itself, with it switching between the two depending on brightness and/or refresh rates?
I don’t know, didn’t find any deeper information about this topic. On my last phone (Asus Zenfone 8) there was the option in Settings - Display - DC Dimming where you could force the phone to use DC dimming instead of PWM.
And with switching to DC dimming the display was more comfortable for my eyes when using low brightness und low refresh rate.
Strange. I’m pretty sure I saw DC dimming when I was setting up, (it was enabled) but of course updated straight away to 15.105.0 and now it’s gone.
On FP5 it is in Settings>Display.
Just for reference can anyone tell me the initial build number the phones were shipped with?
Info here
https://support.fairphone.com/hc/en-us/articles/24463713641234-The-Fairphone-Gen-6-Release-Notes
Yes, that came also in my mind, but I wasn’t quite sure. I thought I’ve seen this point in an earlier FPOS version.
Maybe someone who hasn’t updated to FP6.QREL.15.105.0 yet, could check out this point in the settings please?!
EDIT feedback for rollout version added
Mine was shipped with FP6.QREL.15.84.0 and I applied the following OTA updates (FP6.QREL.15.91.0 and current FP6.QREL.15.105.0).
Same problem here! As a PWM-sensitive user I can use FP 6 better than all Google Pixel and Apple devices, but still I got dry eyes after couple of hours… My previous phone has a LCD screen and always has DC-dimming - it was a dream!
I’m on FP6.QREL.15.91.0
It’s not a real problem at the moment for me. I just was wondering where to check/change this setup in the settings.
Right now, as my FP6 isn’t my daily workhorse yet, I don’t face any problems. I’ll have to see when I’m using it regularly.
And you dont have the setting under Settings-Display?
@stanchen
As your still on the FP6.QREL.15.91.0 firmware, could you please support me and the community and can check out the menu situation for the display options regarding the settings for dimming. Usuall you should find it under Settings - Display - DC Dimming like mentioned here:
It’s unfortunately not there, same as the demo one I saw at Mediamarkt several weeks ago 
I hope we’ll get it through an update. Otherwise I did a small test with another phone, it looks like beyond certain brightness it will automatically switch to DC-Dimming.
For DC dimming I got an explanation
it switches automatically depending on the brightness level. It uses Pulse Width Modulation (PWM) when the display is below 90 nits and switches to DC dimming when it’s above 90 nits. This happens automatically and isn’t something that can be controlled with a manual setting, hence the missing setting.
Do we know what percentage equates to 90 nits?
Not the answer that I wanted to hear, but the solution for my request. Thank you for sharing the information!
According to this review the FP6 has a maximum of 1400 nits.
Another source stating 800 nits in general use and also 1400 nits maximum.
https://geizhals.de/fairphone-gen-6-horizon-black-a3523215.html
According to my math knowlege I would say 90 nits of 1400 nits would be about 6,4%. in maximum condition.
Under normal condition with 800 nits it would be about 11,2%.
Thanks, so I conclude PWM would be used only at very low brightness levels, DCd most of the time.
But why was it removed. Why the company decided not to allow such an important feature to be controlled by users directly? Especially in a questionable ethical fashion. Enabling the toggle for all of the early reviewers. And then effectively disabling it for the paying customers. If it’s not important, why to advertise it as a feature? If it’s actually important, where is the explanation behind it’s removal? Just doesn’t smell right.
You better ask them about the why.
Nah, I’m too lazy for petitions. But nevertheless considering existence of bigme hibreak pro color, tcl nxtpaper 60 ultra and HANNsnote 2, there is a big and ever growing market for eye friendly displays. And fairphone as modular device could potentially release an eye friendly display replacement. Like JK in-cell LCD displays for an iPhone. For example.
