For me, it’s just the fact that phones… are phones. They all look the same, function the same, there’s just nothing new happening with them.
Sure, chips get better and faster, they’ll add another camera to it and fiddle with the dimensions a bit, but that’s not innovation. All phones look like boring rectangular slabs.
Back in the late 90’s, phones had way more variety and personality. Candybar, flip, even the sidetalkin’ taco that was the Nokia N-Gage. A Motorola Razr looked nothing like say, a Nokia or Sony Ericsson. And those were distinctly different from your Samsung or Mitsubishi phones (Yes, Mitsubishi made phones!).
I’d love it if we went back to more phone variety, but I fear the smartphone has effectively killed every other style. Most people wouldn’t ditch their big screen smartphone to go back to a small flip phone.