I hope that current smartphone generation will be able to sustain longer, I don't like buying new things every 2-3 years.
(Not a bad idea to put a bumper on it, though, because the aluminum is wimpy as hell compared to the proper steel on the 4S - I've already had to take a file to my SE after a drop from waist height onto bathroom tile. Look out for the screen, too; mine chipped in a few places from a foot or two drop onto asphalt. Better hardware and it can run iOS 10 without flinching, but physically less robust, so don't expect you can get away with slinging it around the way you can with a 4S.)
I think 5 years is a pretty good run, and it seems like the standard now.
If you bought your 4s 2 years ago, that's on you. If you're buying your phones used, then it's in your best interest to not buy a phone that's already 3 years old.
- physical buttons for shooting
- physical buttons for volume
- back cover should be e-ink for light notification or reading books in the train without killing autonomy
- and of course the windows/ubuntu convergence that could - or could not - come one day
edit:
I see http://www.inkcase.com/en.html refactors the idea of an e-ink smartphone into a case with an e-ink panel.
And http://www.onyx-international.com.cn/index.php/en/boox-produ... tried the whole e-ink only screen.
Seriously smartphone manufacturers, stop trying to shave 3 yoctometers off the thickness every 6 months and give me a phone that is thicker but has a battery that lasts a reasonable amount of time and cycles less deeply so it has a longer life.
4 - 1420 mAh
4s - 1432 mAh
5 - 1440 mAh
5s - 1570 mAh
6 - 1810 mAh
6s - 1715 mAh
7 - 1960 mAh
It dipped a bit from 6 to 6s but other than that they have been consistently increasing battery capacity.
(Btw, plus models have more; the iPhone 7+ for example has 2900 mAh. On the other hand, they drain more for the screen.)
Battery capacity increases alone are meaningless when the hardware connected to it drains it just the same.
SE - 1624 mAh
What were these thicker heavier longer life phones of which you speak? I don't recall there being any of those to have rejected.
Maybe you mean ye olde feature phones or their predecessors. I don't think that's a fair comparison.