I have been using the iphone SE for more than three months. I think it's a great phone. Battery life is wonderful. I charge it once in two or three days.
I think those who complain about the SE's screen size are really foolish people:
Firstly, they had a choice of other sized phones. If they are complaining, why didn't they do a simple research? There are iPhone handsets for tryouts at Apple retailers or telco shops. It makes me wonder how they make decisions.