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Blue light is naturally occurring and is predominate in LCDs. It's at it's highest at noon outside. Even though you may not see a "blue" tint in your screen the blue light is still there. f.lux just reduces it.

f.lux does not work on non-jailbroken devices so if your device is not jailbroken then it may just be the calibration of your display.

I wasn't clear, the phone on the left exhibits a predominant blue tint that my 5s doesn't have. I am aware of color theory but the photo depicts an iPhone with a blue tint colorcast. My iPhone is balanced at white on 8.3.
 
I wasn't clear, the phone on the left exhibits a predominant blue tint that my 5s doesn't have. I am aware of color theory but the photo depicts an iPhone with a blue tint colorcast. My iPhone is balanced at white on 8.3.

The phone on the left is a stock iPhone. Which is why I said it may just be the calibration of your particular display.
 
WOW. I'm not using it at night but this might actually work. How come nobody knows about this? It is too much work though.

Thank you. A lot of people know about this, but most people do not know every nook and cranny of iOS. It's less work to set it up according to the link than to post about how much work it is.

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The phone on the left is a stock iPhone. Which is why I said it may just be the calibration of your particular display.

My wife's 5s display is calibrated similarly and looks like mine as well as the iPhone 6 I bought. Unless the white/grey point in the photo is off.
 
WOW. I'm not using it at night but this might actually work. How come nobody knows about this? It is too much work though.

Many know about this. Good amount of discussion about it here some time ago too.
 
The problem is blue light.

The screen looks the same at night as it does in the day. There is enough blue light in the screen at night as there is at noon outside.

f.lux, which is an app on Mac/Windows AND iPhone solves this by reducing the blue light of the screen at night. It makes the color warmer so it's not so blinding.

The problem with it on the iPhone is that Apple won't let it in to the App store.

So, you need to jailbreak if you want to use f.lux.

If you use f.lux on your Mac then you may already know what I am talking about.

See the difference…
Image

I love f.lux on the Mac and would absolutely love to have it on my iOS devices. I don't agree that the devices are too bright, but I definitely do want to reduce my blue light exposure at night.
 
Saying that blue light keeps you awake more than warmer tones is a myth and has never been proven.
 
Saying that blue light keeps you awake more than warmer tones is a myth and has never been proven.
That may be. I don't know much about the theory.

However, to my mind, it stands to reason that if blue light is dominant and most intense at noon and pretty much non-existant at midnight, then wouldn't you want a display that emulates that when you turn it on at midnight in a dark room?

Perhaps it is a myth, but this makes sense to me. And based on my own use I much appreciate the warm glow of my iPhone's screen at 2am then the harsh glare when f.lux is not installed.

Your experience may be different, but whether this is a myth or not is irrelevant. f.lux works for a lot of people.
 
That may be. I don't know much about the theory.

However, to my mind, it stands to reason that if blue light is dominant and most intense at noon and pretty much non-existant at midnight, then wouldn't you want a display that emulates that when you turn it on at midnight in a dark room?

Perhaps it is a myth, but this makes sense to me. And based on my own use I much appreciate the warm glow of my iPhone's screen at 2am then the harsh glare when f.lux is not installed.

Your experience may be different, but whether this is a myth or not is irrelevant. f.lux works for a lot of people.

At 2am it's not the blue light or screen coolness, it's the brightness. Using the low light filter reduces the intensity to a level that's comfortable.
 
At 2am it's not the blue light or screen coolness, it's the brightness. Using the low light filter reduces the intensity to a level that's comfortable.
Well, I guess it just comes down to personal preference then.

The warm orange glow f.lux give me is easier on my eyes than the blue light, no matter what brightness setting it's at.

But that's just me, so I will continue to use f.lux whenever my iPhone is jailbroken. Everyone else is different.
 
Well, I guess it just comes down to personal preference then.

The warm orange glow f.lux give me is easier on my eyes than the blue light, no matter what brightness setting it's at.

But that's just me, so I will continue to use f.lux whenever my iPhone is jailbroken. Everyone else is different.

Blue is the most difficult color to see, as to the reason I can't remember. I believe red is the easiest color to see. My wife keeps telling me it's not good to look at your device right before you go to sleep...so she's read.
 
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