Mobile-first design means building websites and apps to work great on your...

https://delta-wiki.win/index.php/Is_It_Better_to_Cut_Features_on_Mobile_or_Keep_the_Same_Experience%3F

Mobile-first design means building websites and apps to work great on your phone first. It focuses on fast loading, easy-to-tap buttons, and simple menus that make finding what you need quick and hassle-free