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

https://page-wiki.win/index.php/How_Designers_Decide_What_Stays_on_Screen_vs_in_a_Menu

Designing a full-sized game for a five-inch screen is all about focusing on what matters most. Instead of just shrinking everything, you prioritize touch-first controls that feel natural on small devices