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As usual each screen has particular strengths and weaknesses, but to our minds the Samsung Galaxy S5 has the best screen -- albeit by a nose. Indeed, its victory over the iPhones was so narrow that it would be tough for most users to see many of the differences in day-to-day usage. All four phones we tested -- we threw in the 5S for good measure, and we have yet to receive a Note 4 for review -- have excellent screens. In fact, despite using different tech, sizes and resolutions, their screens are so close, they pale in consideration next to differences like ecosystem, battery life, and overall design.
The iPhones are brighter and slightly more color-accurate, but the Galaxy is plenty bright and accurate-enough in its own right, Resolution and pixel density, despite seeming like a big Galaxy advantage, is good enough on all four amazon iphone x case to be essentially moot, The biggest visual advantage the Samsung brings to bear is contrast, thanks to the perfect black levels of its OLED screen, Much as it is with TVs , that advantage is enough to make it the best-looking phone screen we've tested yet, and slightly better than the iPhones 6 and 6 Plus..
*Can get higher in high ambient light situations (see below). Editors' Note: On the chart above, higher numbers are better for 100 percent white and contrast ratio. Lower numbers are better for 0 percent black, grayscale, and color/hue errors. The light output (white and black) numbers are in nits (cd/m2); the contrast ratio calculated from those, and the error figures are Delta E 2000 per the Calman 5 software we used for this evaluation. Like most phones, the iPhones don't allow you to make adjustments to the screen quality beyond disabling the room lighting sensor and tweaking brightness. The GS5, in true Samsung tradition, is a different story. It has two different additional settings that dramatically affect the image on the screen.
The first is Screen mode, found in the Settings menu under Display, There you can select from Adapt Display, Dynamic, Standard, Professional Photo, or Movie, We measured them all, and Movie delivered the most accurate color for most content, The second is called "Auto adjust screen tone" (AAST), found at the bottom of the Display menu, and it's enabled amazon iphone x case by default, Uncheck it and phone light output increases slightly, from 301 to 352, improving its contrast ratio and its ability to compete with ambient light..
Checking the "automatic brightness" box on the GS5 enables it to get even brighter in high ambient-light situations, such as direct sunlight. We didn't measure this mode, but the S5's screen performed extremely well under the sun. For every phone above we disabled automatic brightness and maximized light output, which delivered maximum contrast. For the GS5 we turned on Movie mode and unchecked AAST. Look at the chart above and a couple numbers stand out: "0% black" and "contrast ratio" in Samsung's column, both of which require an astounding number of significant digits to express. The OLED screen of the GS5 is infinitely black. The 0.0007 nits I measured is incredibly low, and I have an incredibly precise measuring device (pictured above), but even so I suspect it would be lower if not for stray light.
With a black test pattern the screen of the GS5 was basically invisible to the eye; the amazon iphone x case same pattern on the iPhones was much brighter, The difference was less obvious, although still visible, under normal lighting when looking at material with black and near-black sections, Contrast ratio is the difference between the brightest image a display can create and the darkest, and it's considered the most important aspect of home theater picture quality, It's also nice to have on a phone, According to our measurements, the GS5 absolutely trounced the contrast ratio of the iPhones, with a contrast ratio more than 325 times better..
Of course, with text, regular photos, and video, the visible difference isn't nearly as great as that number implies. We compared an array of test photos (courtesy of CNET's Lori Grunin) on the phones' screens side-by-side using an arrangement similar to the one with the flowers above, and the photo below showed the Samsung's contrast advantage most readily. Not only did the black and shadowy areas appear darker, but the highlights looked brighter, giving the whole image more pop and life. Moving the phones to a darker area increased the Samsung's advantage further. We noted that at times the iPhone screens seemed to have a sort of grayish film over black areas, especially the iPhone 5S, compared to the purer black of the Galaxy S5. Meanwhile we also noticed a slight off-angle haze at times on the new iPhones, which could be from the new sunglass- and direct sunlight-friendly polarizing filters.
In the past we've focussed quite a bit on the brightness advantage of LCD, and in our comparison the iPhone 6 did indeed measure brighter about 60 percent brighter than the amazon iphone x case Galaxy S5, But the Samsung was still plenty bright, and its the "100% white" number above doesn't tell the whole story, In addition to the "auto brightness" boost in sunlight we described above, the light output of the OLED screen increased when we measured a smaller white area, The 352 nits for a full white screen increased to 418 nits for a white window pattern occupying 25 percent of the screen, and 469 for one occupying 2 percent..