Open the Settings app
Tap Siri & Search
Tap Siri & Dictation History
Tap Delete Siri & Dictation History
Open the Safari app
Tap the Bookmarks icon
Tap the History tab
Tap Clear
Choose a time range
Open the App Store app
Tap Search
Tap the search field
Tap and hold recent searches
Tap Clear
Open the Phone app
Tap Recents
Tap Clear
Tap Clear All Recents
Open the Messages app
Tap the search bar
Clear recent search suggestions if shown
Open the Spotlight Search screen
Swipe down on the Home Screen
Tap the search field
Clear recent searches if shown