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

https://star-wiki.win/index.php/Pixel_Density_and_UI_Sizing:_Why_My_Buttons_Look_Tiny

Designing a full-sized game for a five-inch screen is about making smart choices, not just shrinking everything down. You start by putting touch-first controls front and center, so players can easily tap and swipe