From CNet:
"Contrast ratio is the difference between the brightest image a display can create and the darkest."
" The HTC One's 500 nits of light output is its greatest advantage over the GS4, which can't quite reach 300. That means it will produce better picture quality and be more legible in very bright lighting like sunlight or direct indoor light."-------Your chart has the HTC One rated way below the S4. As I stated, contrast ratio on your chart, not visibility.
Source:
Screens test: HTC One vs. Samsung Galaxy S4 | Smartphones - CNET Reviews
I'm not trying to get involved in an argument, and you can show me any data you want, but that won't change the fact that if I'm outside on a bright sunny day that my screen is REALLY hard to see. Granted, I generally keep my brightness set very low, and if I crank it up, then yes, it's a bit easier to see, but when I look at my friend's iPhone in the same conditions, it is much more visible.
Now, I'd never trade my S4 for an iPhone, I don't really use the phone outdoors that much, and I love the S4 screen...but none the less I definitely notice that it is hard to see when I'm outside in sunny conditions.
I don't necessarily see what people are saying about how the S4s white is blue (if I'm understanding it correctly?). My screen at full brightness is as white as white can ever be.
IMO the S4s AMOLED display is definitely the best looking display I've used ever (or, at the very least, in a very long time). It's spectacular to say the least. What I like the most are the true blacks the display provides...
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I think they mean its a bluish tint
Sent from my HTC One X+ using AC Forums mobile app
If you were to look at two devices side-by-side (like an S4 and an iPhone), would probably see what folks here are talking about. The "whites" on an S4 screen definitely have a bit of a bluish tint compared to true white.
Frankly, it's doesn't bother me in the slightest...in fact, I think it's actually a bit easier on the eyes.