Start by unlocking your iPhone and locating the "Settings" app. It’s the icon that looks like a gear. Tap to open.
Scroll down in the Settings menu until you find "Safari." Safari is the default web browser for iPhones. Tap on it to proceed.
In the Safari settings, scroll down to find "Clear History and Website Data." This option will delete cookies, browsing history, and other website data. Tap on it.
A pop-up will appear asking you to confirm that you want to clear your history and data. Tap "Clear History and Data" to confirm.