[Nexus 6  General] cb474:
I still really totally disagree. It does work the way I'm saying.

The 50% or 100% brightness level of two different phones is completely arbitrary and dependent on how bright the phone can get. It is a meaningless point of comparison when talking about display power efficiency. You haven't responded to this point at all, you've just repeated your claim as if that proves it.

Looking at DisplayMate's test. At 100% brightness, the Note 4 is putting out 382 cd/m^2, but the iPhone 6+ is putting out 566 cd/m^2. So at 100% brightness the iPhone 6+ is producing 50% more light than the Note 4. It's way brighter. Of course it's using more power. It takes more power to make more light. That doesn't prove the display in the iPhone 6+ is power inefficient. It proves that display in the iPhone 6+ gets brighter.

See: http://www.displaymate.com/iPhone6_ShootOut.htm#Display_Power and http://www.displaymate.com/Galaxy_Note4_ShootOut_1.htm#Display_Power

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Here's what DisplayMate says about the iPhone 6 and 6+ displays (see: http://www.displaymate.com/iPhone6_ShootOut.htm#Display_Power):

So I just don't know what you're talking about when you say the iPhone displays are not power efficient and refer to DisplayMate that says the iPhone 6 and 6+ have a display that is more power efficient than the most efficient comparable previous display that they tested.

Also, for a phablet the iPhone 6+ does not have a large battery. As I said above, it's 2915 mAh. The Note 3 has a 3200 mAh batter, Note 4 is 3220 mAh, Huawei Ascend Mate is 4100 mAh, Lenovo Vibe Z2 Pro is 4000 mAh, LG G3 is 3000 mAh, the OnePlus One is 3100 mAh. So the iPhone 6+ is closer to some other phones in it's category, than the iPhone 6 or 5s, but it's still the smallest battery and far below some phones.

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Um, in their test (http://www.anandtech.com/show/8554/the-iphone-6-review/7) the Note 3 does better than the Nexus 5 in web browsing. A little better on wifi and much better on LTE. So you misread their test. Also their test does not say that with the Nexus 5 you will get nine hours of web browsing on wifi in real world experience (that's also a misreading on your part). It's just a standardized test for comparing phones and doesn't have to reflect real world use (which would have so many variables for any person--distance from router/tower, how rapidly they're loading pages, what are they looking at, etc.--that it wold be impossible to test).

That aside, it is completely plausible that the Nexus 5 might come close to the Note 3 in some battery life tests, for exactly the reason I've stated. The Nexus 5 has a much smaller screen. But the Note 3 compensates by have a much larger battery (3200 mAh vs 2300 mAh). In fact, it's a good demonstration of how a screen with the same resolution but much larger requires a 50% larger battery to get similar battery life (and they happen to have the same chipset, making it any even better comparison).

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I just don't know what to say. I'm not familiar with lesnumeriques (though they do not appear to explain their battery testing methodology, so I'm given their tests zero validity), but the tests on the rest of those sites don't control for the different luminance capabilities of different screens (nor for other factors, like AnandTech does--indeed they don't attempt to control for anything), so their tests are meaningless, for the reasons I've stated. All of their comparisons between phones are pure apples to oranges. AnandTech's test is far better, if not perfect. And most people I know have iPhones and they all get great battery life. So what you're saying is just totally contrary to reality, in my experience.

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In the end, yes of course diplay technologies change and evolve and sometimes become more power effiicient. But in a given crop of the latest flagship smartphones and phablets, with the latest technology, what will differentiate how much power the display sucks at a given brightness level (measured with an objective external measure and not the arbitrary setting of whatever happens to be 50% or 100% brightness in the phone settings) is the size and resolution of the screen. Nothing you've said proves otherwise.