In iOS 18.2, Apple introduced a way for users to select their preferred default apps for iPhone.The freedom to choose default apps on iPhone represents a marked shift in Apple's traditionally closed ecosystem, giving users more control.In iOS 18.2, there are Default App settings for Email, Messaging, Calling, Call Filtering, Browser App, Passwords and Codes, and Keyboards.To set default apps on iPhone, go to Settings, select Apps, tap Default Apps, and choose the desired app for each feature.