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

https://simonsnewchat.rivetgarden.com/posts/how-do-you-design-for-both-tablets-and-phones-without-breaking-ui

Designing a full-sized game for a five-inch screen is about making smart choices, not just shrinking everything. It means focusing on touch-first controls that feel natural on a small display