Designing a full-sized game for a five-inch screen is all about prioritizing...
https://xeon-wiki.win/index.php/Spin_Button_Too_Small_on_My_Phone:_How_Do_Designers_Size_It%3F
Designing a full-sized game for a five-inch screen is all about prioritizing what matters most. Instead of just shrinking everything, you focus on touch-first controls that feel natural in hands. Portrait mode often works better than landscape here