iPhone X OLED = less intense blue light?



  • Hi all. :)

    I originally posted on these forums a couple of years ago:

    https://forum.justgetflux.com/topic/2674/iphone-6-macular-deg

    I was having problems with my sight. My vision still continues to get worse. Recently in the news I saw that studies have finally confirmed that prolonged exposure to blue light does indeed destroy cells in the body, including cells in the eye, potentially leading to sight loss.

    I was wondering if the new OLED screens (particularly in the iPhone X) were less blue light intensive than the old iPhone LED screens?

    I saw a post from LG saying that their OLED screens cut blue light emissions by 2/3. However, I also saw that the iPhone X pushes out way more light that any previous iPhone LED screens (ultimately counteracting the effect).

    Any thoughts or evidence on the web to expand on this?

    Thanks everyone. :)



  • Have you tried the iPhone iOS12 in-built feature Night Shit?



  • Hi. Yes. I am running iOS 11 on an iPhone 8. I have night shift set to maximum and switched on all the time. I am jailbroken and was going to install f.lux via cydia but f.lux doesn’t appear to be compatible with iOS 11.

    I just wondered if the new OLED screens were any better at cutting down blue light. I would swap to an iPhone X if so. :]



  • I recommend that you set your brightness to something extremely low (along with using Night Shift), and you should also enable the setting called "Reduce White Point". This setting is in General > Accessibility > Display Accommodations. I recommend a much higher setting for this than the default of 25%. Even so, the default setting does reduce the White Point quite nicely.

    In addition, keep Auto-Brightness disabled.

    On the general Accessibility settings, you can also enable the setting called "Increase Contrast". This can help slightly counteract the decreased visibility that can be created when using a super low brightness with the White Point reduced and Night Shift enabled and set as warm as it goes.

    If all of this seems like too much work to do every day, then ask Siri to do it for you. For example:

    • "Hey Siri, enable Night Shift"
    • "Hey Siri, set the brightness to 0%" (by the way, you can state brightness increments as small as 0.1%)
    • "Hey Siri, open the Accessibility settings" (but you must set the settings)
    • "Hey Siri, open Display Accommodations" (to which Siri will begin to state that this can't be done, but it's immediately interrupted by the action being taken correctly - I guess it's a small bug) - again, you must set the settings. These are settings that Siri can't configure for you on command.

    Note: I'm using iOS 12.0 and I haven't used any previous version of iOS (I got my first iPhone 2 weeks ago), so I don't know if what I"m describing above is only possible in iOS 12.

    Another note: I have an iPhone 6s. To explain why I didn't get a higher model, I got it for free from my parents thanks to an awesome upgrade deal they took advantage of through Xfinity Mobile.


  • f.lux team

    We think they are a lot brighter, see this article:
    https://justgetflux.com/news/2018/02/16/OLED.html

    And absolutely keep automatic brightness turned on.



  • Thank you all for your responses.

    I had not changed the white point intensity in my options before. I have switched it on now and will play about with its slider setting over time.

    So basically, the answer I am looking for is, DO NOT change to an OLED iPhone, as it kicks out an even higher amount of light energy (including the blue light section of the spectrum). This is disappointing for me. I had hoped the newer/different technology might have been a healthier option. Oh well. I am going to have to be very strict from now on and drastically reduce my device screen time.... until, that is, a new safer technology comes about.

    Thanks again everyone. :)



  • @herf said in iPhone X OLED = less intense blue light?:

    We think they are a lot brighter, see this article:
    https://justgetflux.com/news/2018/02/16/OLED.html

    And absolutely keep automatic brightness turned on.

    There are 3 problems that are created when Automatic Brightness is enabled:

    1. The brightness can become higher than you'd like it to be if you are trying to keep a low brightness 24/7. This is especially important for people who are extra sensitive.
    2. Similarly, the brightness can become lower than you'd like it to be at times, and this can become quite irritating. I mean, it can become quite irritating to have the brightness changing at times when you'd rather it stayed bright or stayed dim. I personally hate how Automatic Brightness will give me the opposite kind of brightness levels that I want sometimes. It's not that I don't understand the reason for the change, it's that it's sometimes not the brightness I want.
    3. Automatic Brightness also uses battery power every single time it's activated by changes in detected light levels. I think it's also reasonable to assume that it's constantly using battery power in order to be constantly detecting the ambient light level.

    I fully understand why you recommend keeping it enabled though because it's probably best for most people, but I would strongly disagree that it's best for everyone to keep it enabled.

    @c-t-e said in iPhone X OLED = less intense blue light?:

    Thank you all for your responses.

    I had not changed the white point intensity in my options before. I have switched it on now and will play about with its slider setting over time.

    So basically, the answer I am looking for is, DO NOT change to an OLED iPhone, as it kicks out an even higher amount of light energy (including the blue light section of the spectrum). This is disappointing for me. I had hoped the newer/different technology might have been a healthier option. Oh well. I am going to have to be very strict from now on and drastically reduce my device screen time.... until, that is, a new safer technology comes about.

    Thanks again everyone. :)

    Don't worry about any problems from getting the iPhone X because you can keep the brightness set low, keep Night Shift enabled (and set it to the warmest color temperature), and enable "Reduce White Point".

    Automatic Brightness can be nice, but not if you want a nice low unchanging brightness 24/7 (that is, a nice "safe" brightness 24/7). It also uses more battery power. Think about it: it has to use battery power in order to adjust the brightness. Not only that, but I think it's reasonable to assume there's battery power constantly being used in order to constantly detect the ambient light level.

    You can also invert the colors at night in addition to all of the other adjustments, using either the Smart Invert or Classic Invert (in General > Accessibility > Display Accommodations > Invert Colors).

    If you do end up getting an iPhone X, I recommend getting in the habit of holding it further away from your eyes. After all, it's a bigger and much more 'alerting' display. Not only that, but you can change settings to make text larger or to make everything larger. I understand though that the only reason you asked about it was in hopes that OLED might be a 'safer' display technology. Even so, with how awesome the iPhone X looks to be, I think it would be worth it. After all, it's not like you have to have alerting display settings! Right?

    So, I see nothing wrong with the iPhone X as long as you use "safe" display settings (and it sounds to me like you would personally need to). And, again, you can also keep 'Reduce White Point' enabled, and you can also keep Night Shift enabled. I will say it again and again though: Automatic Brightness should be disabled if you want a nice low 'safe' brightness 24/7 - or if you want to stay in control over the brightness level. With how extremely easy it is to adjust the brightness with Siri's help, and with the fact that disabling Automatic Brightness will result in a longer battery life (in between charges), I see nothing wrong with disabling it.

    When I have Automatic Brightness enabled, I find it to be quite irritating because sometimes it sets the brightness to a level that I don't want or like for whatever I'm doing at that exact moment! So, I find it to be MUCH better to keep it disabled so that I have full control over my display's brightness. It kind of reminds me of the way my car will automatically change the speaker volume depending on my current speed. I hate that, so I have it turned off.

    You might have noticed that iOS says that leaving Automatic Brightness disabled might use more battery power. That can only be true if you prefer to use a very high brightness setting (and many people do). After all, Automatic Brightness tries to give you the lowest brightness setting that's needed based on the currently detected ambient light level. However, for someone who wants or needs a very low brightness setting 24/7, all the automatic adjusting of the brightness and constant detection of the ambient light level is just an unnecessary drain on the battery.

    For everyone else, maybe Automatic Brightness is a good thing. Personally, I keep Automatic Brightness disabled because I prefer to be in control over what the brightness is, and I never forget to use a lower brightness when it's time to begin avoiding alerting light. So for me, it's not an issue to leave it disabled.

    One last thing: if I could afford to buy an iPhone X, then I would, even though it has a much more 'alerting' display because I know how to (and I prefer to) control my brightness manually. Even with the "less alerting" or "safer" display of the iPhone 6s, I can still easily feel in my eyes and my body how important it is for me to use a much lower brightness and warmer color temperature during the last few hours of my day before going to sleep. Not only does the display actually seem to be too bright during this time, but I can feel it. I get an almost overwhelming desire to either turn it off or reduce the brightness and set a warm color temperature. I don't need iOS to do any of the thinking for me when it comes to my display brightness. I know what brightness I want and/or what brightness is best for me at any given time. Therefore, my battery drain is lower than it would be if I had Automatic Brightness enabled.