Designing a full-sized game for a five-inch screen is all about smart...

https://rileysnewcolumn.readspirex.com/posts/what-ui-elements-should-always-stay-visible-in-a-slot-game

Designing a full-sized game for a five-inch screen is all about smart priorities, not just shrinking everything down. You need touch-first controls that feel natural on small screens and decide if portrait or landscape works best for the experience