Herd Animals
Phone designs, like fashion, move fast. And they mostly move in herds.
Incremental changes to design are quickly emulated. Technological tweaks are rapidly assimilated in the next generation of a competitor’s handset.
If your product is aiming to be fashionable, aim to move fast so that you don’t become irrelevant quite literally over night. Move fast to stay in the lead, or get lost in the herd.