Open the Settings app
Tap General
Tap iPhone Storage
Review apps using the most storage
Tap an app
Tap Offload App to remove the app and keep its data
Tap Delete App to remove the app and its data
For Safari, open Settings
Tap Safari
Tap Clear History and Website Data
Confirm the action
For app-specific cache, open the app’s settings if available and clear cache there
Delete and reinstall the app to remove its cache if no clear-cache option exists
Restart the iPhone after clearing cache if needed