Apple’s “iPhone 6” may have a higher resolution display, making the leap from the current iPhone 5s resolution of 1136 x 640 to an even sharper 1704 x 960 resolution. This would result in the rumored 4.7-inch model sporting a display with 416 ppi and the same 16:9 ratio of the iPhone 5/5s/5c, while a 5.5-inch model at the same resolution would boast 356 ppi.
Much speculation has centered around the resolution of the rumored larger displays to be used in Apple’s next-gen handset. Some believe the company will retain the resolution found on the current iPhone 5s to make it a seamless transition for developers.
Apple could boost the resolution of the display, and therefore maintain or boost the pixel density, which would require additional work from developers to maintain compatibility with the new devices.
KGI Securities analyst Ming-Chi Kuo has suggested that Apple would keep the current 326 ppi density, bumping the 4.7-inch display to 1334 x 750.
To add to the mix, 9to5Mac suggests that Apple may adopt an even higher-resolution display, tripling the number of pixels in the iPhone display for both length and width.
This means that Apple will likely be tripling the aforementioned “base resolution” (568 x 320) of the iPhone screen in both directions, and that the iPhone screen resolution will be scaled with an increase of 150% from the current 2X resolution of 1136 x 640. Of course, Apple tests several different iPhones and display technologies, so it is possible that Apple chooses to take another route for display specifications for the 2014 iPhone upgrade.
Apple has reportedly been testing this 1704 x 960 resolution, however its not known for sure which direction they’ll take.