> Why do they insist on every new phone being bigger than the phones before them?

Others wrote complicated or bs jokes, here is my SIMPLE tip:

It has to change otherwise people would not buy new. Size can not change randomly so it has 2 ways: decreasing and later it becomes an iwatch, and tablet becomes a phone: this is stupid because harder to increase price.

So increase it is. If you do not like it, use a watch+earpiece as a phone.