Yes.
Does everyone want it? Of course not. The edge to edge screen is what was in the rumor mill. A 4" screen would not change the dimensions of the phone in this case.
A bigger screen makes no sense. Apple already made tons of internal studies on the best form factor.
If you want movies, go to an IMAX theater.
Yes.
Does everyone want it? Of course not. The edge to edge screen is what was in the rumor mill. A 4" screen would not change the dimensions of the phone in this case.