Samsung Galaxy S6

Samsung sent DisplayMate, which regularly tests smartphone and tablet screens, pre-production models of both the Galaxy S6 and the Galaxy S6 edge to check out. Both have the same type of display, with a 5.1 inch high resolution Quad HD 2560x1440 pixel screen with 577 pixels per inch, with the only real difference being that the S6 edge has a curved screen.

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DisplayMate gave the Galaxy Note 4 the title of having the best smartphone display in September 2014. In today's report, the research firm says:

The Galaxy S6 and Galaxy Note 4 are neck-and-neck record holders for display performance, effectively tied or alternating between first and second place in almost all categories except screen size for the much larger Galaxy Note 4, and the much higher pixels per inch for the Galaxy S6. What is especially impressive is that the overall display specs and performance of the Galaxy S6 have been maintained or improved after being scaled down by 20 percent in area from Galaxy Note 4. So… The Galaxy S6 matches the Galaxy Note 4 in overall display excellence and record performance and joins it as the Best Performing Smartphone Display that we have ever tested.

DisplayMate also compared the Galaxy S6's display against that of Apple's iPhone 6. It stated:

The Galaxy S6 has more than double the resolution and more than 4 times the number of pixels as the iPhone 6. It also has significantly higher peak Brightness, significantly higher Contrast Ratio in both low and high Ambient Light, significantly higher Absolute Color Accuracy, significantly better Viewing Angel performance, and has 4 selectable screen modes instead of a single fixed one on the iPhones.

Source: DisplayMate