In addition to the security risk, there are privacy issues to consider.
This tutorial defines each item in detail and walks you through managing and deleting the respective data.
It is recommended that Safari be shut down before deleting private data components.
For more information, learnhow to close apps on the iPhone.
Clear Browsing History and Other Private Data
Open theSettingsapp, located on the iPhone home screen.
Scroll down and selectSafari.
Scroll to the bottom and selectClear History and Website Data.
If the link is blue, it means Safari stored browsing history and other data on the rig.
If the link is gray, there are no records or files to delete.
SelectClear History and Datato confirm the action.
This action also deletes cache, cookies, and other browsing-related data from the iPhone.
Block All Cookies
Scroll down to thePrivacy & Securitysection and turn on theBlock All Cookiestoggle switch.
Scroll down and selectSafari, then scroll to the bottom and selectAdvanced>Website Data.
SelectEditin the upper-right corner.
Alternatively, tapRemove All Website Dataat the bottom.
Select thered dashicon next to the websites whose data you would like to delete, then selectDelete.
Repeat this process until you are satisfied.
When you are finished, selectDone.
To open a new non-private tab, hold down theSafariicon, then tapNew Tab.
To recover browsing history via iCloud, sign in to your iCloud account and tapSettings>Restore Bookmark.
