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

https://mag-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 all about making smart choices, not just shrinking everything down. You focus on touch-first controls that feel natural in a small space