Here are 3 iPhone concept designs which I find fascinating. It is unlikely that the next iPhone will have any of the details shown in these videos, but I like the ideas like holographic displays, edge displays, or the way the final one unfolds and projects a virtual keyboard and virtual screen.
This first video shows an iPhone which is thinner, lighter, and larger than the current model, but is otherwise fairly unremarkable.
That's not a terribly ambitious design, but this next one is. This concept design has screens on the edges of the model, and it also includes other subtle improvements like a battery indicator surrounding the lightning plug.
This final design is one that we probably won't see in a million years, which is unfortunate. Do you know how some people have made their phone their main computer?
This concept design tries to make that a reality. It has integrated projectors which can show a user a virtual keyboard and project an OSX desktop on a nearby wall.