Weâ€™ll examine the iPhone 5 display in detail below, but here are the Highlights: it is the Brightest Smartphone we have tested in the Shoot-Out series, it has one of the lowest screen Reflectance values we have ever measured, it has the highest Contrast Rating for High Ambient Light for any Mobile device we have ever tested, and itâ€™s Color Gamut and Factory Calibration are second only to the new iPad. What are the downsides? The White Point is still somewhat too blue like most Smartphones, and at Maximum Brightness it has a shorter Running Time than the iPhone 4, which is not surprising since it has a larger screen and a larger Color Gamut but roughly the same capacity battery.
Regarding the Samsung Galaxy S III display:
Weâ€™ll examine the OLED Galaxy S III display in detail below, but here are the Highlights: the Brightness is about half of the iPhone 5 due to power limits from the lower power efficiency of OLEDs and concerns regarding premature OLED aging. The Color Gamut is not only much larger than the Standard Color Gamut, which leads to distorted and exaggerated colors, but the Color Gamut is quite lopsided, with Green being a lot more saturated than Red or Blue, which adds a Green color caste to many images. Samsung has not bothered to correct or calibrate their display colors to bring them into closer agreement with the Standard sRGB / Rec.709 Color Gamut, so many images appear over saturated and gaudy. Running Time on battery is less than the iPhone 5 due to the lower power efficiency of OLEDs, even given that the Galaxy S III has a much larger battery capacity and much lower Brightness.
There’s a ton of technical data that shows the iPhone 5 display comes out on top.