To me the iPhone is a great toolbox, more like a Swiss Army knife than some of the single-purpose tools in my studio or kitchen, but still essentially a utilitarian object. It's proof that an object can be utilitarian and have a great design.
Boring utilitarian objects are good, no? Boring in the sense of reliable. I mean the last thing I want is for my car to start acting like some jack-in-a-box, popping another surprise off its secret little shopping list every month. My can opener is the most boring thing in my kitchen, similarly the dressmaker shears or appliqué scissors in my studio. They were all chosen with care, and are appreciated, but the only likely status aside from "boring" for such gear is "infuriating" in the event any of it stops working.
As far as the iPhone itself being boring? I don't even like switching out how I have the buttons, although I do mess around with them when I add an app now and then. I admit to having spent some time on exterior fashion, picking out a green bumper and that black WaterField suede jacket with the stretchy mesh pocket, but that's just cosmetics. Under the hood I like the iPhone to be how it's been for me, low maintenance, functional, standing up to my expectation that it "just works." (After a quick turnaround of one that had call quality issues 😀)