What are you talking about? You hold your phone by the screen? I picked up my phone several times to check and my fingers didn't touch the screen at any time unless I wanted it to.
[doublepost=1496277634][/doublepost]NOW give me a phone the size of the 7+ with a screen like the "8" and I'll be giddy as all get out.
Don't tell me you never tried to tap something with your thumb only for your thumb muscle base to hit the screen first
[doublepost=1496322045][/doublepost]
Yes, but I consider the iPhone 4.7" to be unergonomic in width so the S8 is also not ergonomic in my opinion. Neither are used optimally with one hand. Also consider the edges, the machining (aluminum vs a rubberized back), etc. Many other things would make these devices more ergonomic.
Physical and software both have the same weight in ergonomics. Complete lack of software optimization for left handed and right handed users have made some compromises in how users interact with screen. Too much finger travel is one of the worst killers of ergonomics as well, the best example is lack of properly placed back button on iOS with afterthought of having it in upper left corner which means you have to use both hands in order to reach it. Android is even worse in finger travel. Also bottom tabs in apps are bad solution, they might be the quickest solution to fragment the app and to get where you want quickly but its not good for one hand use.