According to TUAW, the discovery was made by the developers of the app WALTR, a Mac app that lets users upload various kinds of video formats on their iPhone or iPad without having to encoding in advance.
The 4.7-inch iPhone 6 brings 1,334 x 750 pixels, while the iPhone 6 Plus offers a 1,920 x 1,080 pixels screen.
A 4K resolution corresponds to 3,840 x 2,160 pixels which means that the smartphones won’t be able to reproduce the detail of a 4K video.
One major disadvantage is the fact that the amount of memory these videos occupy is quite large and not all users will save big file on the phone.
On the other hand, there are applications that claim to be capable of recording in 4K with the new models of the iPhone.
Nonetheless, the ability to play 4K data on the iPhone is bound to set the device among the most highly developed handsets on the mobile market.