20 years ago I wasn't so into technology as I am now, so I never thought about it. 20 years ago we got our first flip phones in order to call each other (my wife and I) and that's all we saw them for.
It was only ten years later after having used my Sanyo Katana for email/internet the first time that I even considered using our phones for more. Text messaging was a huge thing for us, especially my wife.
Honestly, I can see a future where all this technology is integrated into your brain. Everything you see on a screen is put on your eyeballs and you just interact by thought. Of course that's way in the future and all the medical issues (like rejection of tech parts in your head) will have to be worked out. It requires advances in not only phone technology but medical technology.
But to just be able to naturally look at something in AR or VR with no device at all, accept calls and answer texts while scrolling info across your eyes, all controlled and dismissed by thought would be cool.
Not for some of course, probably a nightmare to them. But that's where I ultimately see all this going.
Google Glass is an early shot at it.