The Apple iPhone has the capability to connect to the Internet and let you browse the web through its built-in browser. If you want to delete the browsing history in your iPhone's browser, you can do so through the browser's properties.
Turn on your iPhone.
Select the "Safari" browser from the home screen.
Select the "Bookmarks" icon from the browser window.
Select the "History" button.
Select the "Clear" button, then select the "Clear History" button.