The game of mobile UI design changed when users stopped viewing apps as tools and started treating them like extensions of their own hands. By 2026, over 85% of mobile interactions will be gesture-based, not button-tap-driven. That staggering shift, confirmed by Nielsen Norman Group research, means the rules you learned five years ago simply do not apply now. The core question for any product designer today: Are you building a seamless extension, or are you creating a foreign