I know some people think 4" is enough. And some people want a bigger screen from , with a new iOS utilising that space in some new great way. This we all know. What interests me though, is how will spin it when the time finally comes for a bigger screen? As it is now, their marketing and presentations basically all tell you that it's the best size ever, it's "just right" (including today's admittingly bad new campaign). And then, with iPhone 6, or maybe a year-two-three after that, but eventually when they'll unveil a bigger screen, what'll it be? "Erm, well now this screen is just right, forget all that stuff we were droning on about your finger reach, one handed use etc?" The only semi-decent way out of this for is to wait until it can make a true edge-to-edge phone and then implement a bigger screen. Otherwise and all the "omg but I can't use those phablets with one hand" crowd will have to eat their words. Even if they come out with 2 sizes for iPhone, it'll still be a u-turn. Btw, I'm not saying bigger is better, maybe it is, maybe it isn't; depends on the way iOS will handle it and the way it's implemented, but it's implementation sometime down the line is inevitable, so please don't make this post about arguing whether will do it or not.