This allows you to either limit the clearing of history, cookies and website data to a specific timeframe, or to delete your existing web history altogether.
Open Safari and with a tab open, tap the Bookmarks icon (the open book) located at the bottom of the screen.
Tap the tab at the top of the screen with a clock symbol, and you’ll see a history of your browsing activity.
To remove instances of recorded visits to specific web pages, swipe leftwards across individual logs in the list and tap the red delete button that appears.
To delete the entire browsing history list, tap “Clear” and select the option you prefer from the following: The last hour; Today; Today and yesterday; and All time.