Out of the estimated 8.2 billion world population , in my opinion , there are plenty of people out there who are  "blown away"   by a  15.6 inches 5G smartphone or a 5G smartphone which have a screen size of  15.6 inches and a 5G Folding Smartphone that can unfold into a  15.6 inches Tablet and  a  15.6 inches 5G Cellular Laptop with  telephone/phone functionality(regardless of the Operating System being used , regardless whether it is  INTEL-based or  ARM-based),   I am one of them !  So much so that   size really matters   to all these people ! 

And that size is  15.6 inches .