Let us say a    hardware/software manufacturer    produce a bigger phone (let us say 15.6 inches screen size) with middle-class specs , with middle class specifications and attractive price but also good quality. Would people buy it ? In my opinion , I think so.  I really don't think a bigger phone (15.6 inches screen size) needs flagship specs , needs flagship specifications , needs cutting edge specifications. In my opinion , most people who want bigger phones or fans who love smartphones with giant screens ( 15.6 inches screen size) do not need flagship specs , or cutting-edge smartphone hardware , meaning , they do not have that need. What they want is just to buy a phone or a smartphone with huge screens (15.6 inches screen size)  , that can serve as a Laptop , that can serve as a Tablet , and that can serve as a Smartphone .