One of the most convenient features of your iPhone is its ability to double as a pocket computer. In just the tap of a finger, you are searching the Internet on a Safari web browser. Just as on a laptop or desktop web browser, the search history on an iPhone can be erased. Your device automatically saves only the last five days that browsing occurred and deletes all previous searches. Clearing the history from one or more of the previous five days takes just a few seconds.
Tap the "Safari" icon, located on your iPhone's home page.
Select the "Bookmark" icon from the bottom toolbar, represented by the image of an open book.
Tap "History" from the top of the "Bookmarks" menu.
Tap the date for which you would like to delete the history. Dates are listed chronologically, with the most recent date at the top.
Select "Clear" in the bottom-left corner of the screen. Confirm the selection by tapping on the red "Clear History" button that appears. Tap "Done" in the top-right corner of the screen.