There has been talk this summer about the implementation of a 4-inch or larger screen in the new iPhone terminal, but this did not happen. It seems that the iPhone 5, in a version similar to the one in the picture above, would exist in the form of a prototype, but Steve Jobs opposed its launch because it would have fragmented the iOS platform for iPhone terminals. The problem is not the bigger screen but the resolution available for it. Practically, the implementation of a larger screen with a higher resolution, but not double that of the Retina Display, would require the development of new applications for our iDevices, applications that will not be available in such large numbers from good start
Basically, if Apple were to increase the size of the screen, it would have to do 2 things: change the resolution so that the appearance of the iOS remains unchanged, or keep the resolution of the Retina Display and change the appearance of the iOS. Increasing the resolution to 1280×720, for example, would generate a very big problem for application developers who would have to rewrite their creations to make them compatible with the new resolution. Keeping the Retina resolution on a 4-inch screen would change the look of iOS and Apple would have to make major changes to keep it exactly as we see it now.
No matter how we look at the situation, someone will still have to do a lot of work so that the iDevices work very well and display the applications and iOS without problems. Just doubling the resolution to 1920 x 1280 would solve the problem, but screens for mobile phones capable of displaying such resolutions without problems cannot yet be produced in the quantities required by Apple. Practically, the problem of implementing a larger screen in the iPhone is more complex than you might think because Apple offers the same experience on all its iDevices, unlike Android where the screen influences the appearance of the interface.
