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iPhone 7's 'Best LCD Display Ever' Marks 'Major Upgrade Over iPhone 6'
iPhone 7 achieved the highest color accuracy, peak brightness, and contrast rating in bright light of any smartphone display, the highest contrast ratio of any IPS LCD display, and the lowest screen reflectance of any smartphone display.
Apple's latest flagship smartphone also has image contrast and intensity described as "visually indistinguishable from perfect," and the smallest color variation when viewing the screen at an angle of any smartphone display.
Color Accuracy and Power Efficiency
iPhone 7 has two color gamuts, including a new 26% larger DCI-P3 Wide Color Gamut, as found in 4K TVs, and a traditional, smaller sRGB / Rec.709 gamut. DisplayMate said both gamuts have been implemented with absolute color accuracy that is "visually indistinguishable from perfect," which is "truly impressive" and a "major competitive advantage" over other smartphones.
DisplayMate said the iPhone 7 has "the most color accurate display" that it has ever measured, adding that the smartphone's display is "very likely considerably better than any mobile display, monitor, TV, or UHD TV" that consumers have. In technical terms, the iPhone 7 has a "Just Noticeable Color Difference" (JNCD) rating of 1.1, which is the best result of any smartphone it has ever tested.
Despite having a much wider color gamut, the iPhone 7's display is 7% more power efficient than the iPhone 6's display.
Wide Color Gamut LCDs like the iPhone 7 instead use specially tuned Red and Green phosphors to optimally transform the light for the chosen saturated Red and Green primaries, which improves their light and power efficiency.Brightness
The measured peak brightness for the iPhone 7 is 602 cd/m2 (nits), the highest of any smartphone DisplayMate has ever tested.
The measurement increases up to a record 705 nits when Automatic Brightness is turned on under brightly lit conditions.
On the iPhone 7 the Maximum Screen Brightness can go much higher when Automatic Brightness is turned on, so that users can't permanently park the Manual Brightness slider to very high values, which would run down the battery quickly. High Screen Brightness is only needed for High Ambient Light, so turning Automatic Brightness On will provide better high ambient light screen visibility and also longer battery running time.Contrast Ratio
DisplayMate said the iPhone 7 has a record-breaking contrast ratio among IPS LCD smartphone displays.
The iPhone 7 has a measured Contrast Ratio of 1,762, which is Very Good for a mobile display, and the highest we have measured for any IPS LCD display. It is also 26 percent larger than the 1,400 that Apple lists as Typical. However, Contrast Ratio is only meaningful in low ambient light, which is seldom the case for mobile displays.iPhone 7 also has the highest contrast rating (137 to 160) in high ambient light of any smartphone.
DisplayMate said iPhone 7 has 4.4% screen reflectance, which is a record low among smartphones it has ever tested.
However, the iPhone 7 doesn't come close to the record low 1.7% screen reflectance of the 9.7-inch iPad Pro, which has a special anti-reflective coating.
Unfortunately, AR coatings still can't be used with smartphones, which have much higher abrasion and scratch issues than tablets and other touch screen displays because they are small enough to be carried in pockets and bags that have all sorts of scratchy things inside. A number of companies are working on technologies that can produce both low screen reflectance and high abrasion and scratch resistance […] but it's challenging and also has to be cost effective. Since peak brightness can't keep increasing due to battery power limitations and thermal issues, developing a low reflectance screen will be the key to improving display performance in high ambient light.Viewing Angle
DisplayMate said the iPhone 7 has "excellent viewing angle performance" with no visually noticeable color shifts. The display had the smallest color variation when viewed at an angle, earning a JNCD rating of 2.1 or less.
With its Dual-Domain Pixels, the iPhone 7 Contrast Ratio remained close to 1,000 at 30 degrees for both the Portrait and Landscape modes, which is the highest we have measured for LCDs. However, all LCDs do have a strong decrease in Brightness (Luminance) with Viewing Angle, and the iPhone 7 showed (as expected) a 55 percent decrease in Brightness at a modest 30 degree Viewing Angle.DisplayMate shared more in-depth analysis in its iPhone 7 vs. iPhone 6 display shootout.