Apple

It's prolly cuz we've reached peaked innovation, idk tho, just my hunch.

I currently own a 12PM and it's still so good, even today, there really isnt any reason to upgrade your phone unless you want features like ProMotion, higher brightness, 5G, Always-on-display, better camera, better/optimized battery, and a better CPU, but I doubt the average person would even use or even need most of those features.