Re: bigger is best ok?
It was envisaged about 25 years ago or more, that there is less limit on length of a hand-held gizmo than width. A Slide rule is maybe the ultimate (invented 17th C.).
A phone needs to fit in one hand and perhaps be no longer than 50% more than pocket depth (2/3rds in pocket so it won't fall out).
I think that the original LG Chocolate (2006?) was first tablet style phone with long screen. The Nokia Communicator 9100 and 9200 series may have been the earliest smartphone with a very long form factor and very wide "letterbox" format screen, from about 17 years ago. I had both.
So quite logical for a phone. Multiple windows would be good? I think LG did have that years ago.