Two of the first prototypes of iPhone appear in a video clip that shows us where Apple started in the development process of its revolutionary smartphone. The two prototypes run different versions of the operating systems, an Acorn OS and an operating system similar to the one installed on the iPods of those times, along with a similar interface.
You can notice that none of them come close in terms of functionality to what the first model of the iPhone with iOS offered, but in terms of design they are quite close. These prototypes were used by Apple engineers to test various functions of the iPhone and to complete the design and development process in order to launch it on markets around the world.
These prototypes have also been presented separately by former Apple employees, or people who collect such devices for various reasons. Now we see for the first time a comparison between two prototypes of the iPhone running and two different versions of the software used for testing, the whole presentation being a very interesting one.
https://youtu.be/pVNvqU6IFnI
