Good grief, the resolution war is something bordering on the ridiculous. Do we need a 4K display on something the size of a 5/6 inch phone? No, not even a little bit. A 70" Television, yes certainly, but not so much on a teeny tiny little phone. It's just another number race to lure in people who don't know any better and just see that there's a higher number so therefore it must be better. Well if you fall for that nonsense, need I say more.
Will Apple eventually do the same and up their resolution and proclaim it's the best thing ever? Probably but in reality it will be to put an end to the numbers war so that the competition is not perceived as more advanced, not because it's inherently better.
There's far, far more to a good quality display than mere pixel count alone. In fact for a quality reproduction of an image, text or otherwise, once the resolution gets beyond about 300ppi the resolution becomes one of the least important things.
Let's put it this way. Grab a phone, any phone you like doesn't matter who makes it, that has a screen with at least 300ppi and open, lets say a book on it, or even a web page. Ok, you've done that? good. Now zoom in as far as you can on the text, really get right in there push as far as you possibly can. Now look very closely at what's on the screen, see all of those nasty jagged edges on the curved letters. Or horrible blurring where the software is trying to smooth out what's on the screen. No? None of that? All nice and crisp and clear? Well then the resolution is perfectly fine.
Granted there's something to be said for more pixels allowing for such things as better gradation in photos for example, but again there's a very real limit on those improvements imposed by the size of the screen in the first place.
The ability for a screen to reproduce accurate colours, provide a high contrast ratio and so on will have a far more visible and overall visually appealing effect than the resolution alone. Nonetheless such arguments over mines is bigger than yours, yeah but mines gives more pleasure than yours, will rage on forever. Some of us will always be lured in by the numbers game regardless of which aspect it's applied to. We fall for the gimmicks and the fancy advertising that tells us we can't be without whatever shiny new thing the manufacturer is trying to peddle. While some of us will simply

and instead take pleasure in enjoying the higher quality of the device we have chosen based on actual real world benefits.......
...... And occasionally waffle on about it on forums because we enjoy a good debate and our morphine has kicked in
