A technology leap. Order of magnitude better battery, or a perfected, flexible form without issues like dust behind a screen at the hinge point. I don't play g

A technology leap. Order of magnitude better battery, or a perfected, flexible form without issues like dust behind a screen at the hinge point. I don't play games on my phone, so it really does everything that I do often that I want it to. When I look at what else I own that it could replace, I can't see other easy wins.