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

https://wiki-legion.win/index.php/What_Is_Feature_Parity_in_Mobile_Game_Design%3F

Designing a full-sized game for a five-inch screen is all about prioritizing what matters most. It’s not just about shrinking everything down. Touch-first controls need to be easy and natural. You have to decide if portrait or landscape mode works best