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

https://holdenssplendiddigests.zenbloomer.com/posts/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