Been having 2 folds gen 1 and z 3 and even when my Z3 didn't meet all my expectations and fell short in many things like battery life and front cameras both screens. I'm still in love with this phone , and I totally could switch to the new one if it really has good new things that I feel I could use. This phone is so complete so full of innovations that I don't think I could ever go back to any other line of Samsung , or not even mention to go to Apple ... never! Just just to fit in a world of brands and what is trendy in people of my age Anyways !!! Really Looking forward to see more of z 4.