Open Settings
Scroll down and tap Safari
Tap Clear History and Website Data
Tap Clear History and Data to confirm
To clear cookies for other browsers, open the browser app
Open the browser’s Settings or Menu
Find Privacy, History, or Clear Browsing Data
Select Cookies and Cached Images and Files
Tap Clear Data or Clear Browsing Data
To clear app cache, open Settings
Tap General
Tap iPhone Storage
Select the app
Tap Offload App or Delete App
Reinstall the app if needed