There are several reasons why someone would want to enable the Private Browsing feature on their iPhone or iPad. Most commonly, it’s to protect themselves from advertising agencies because most browsers including our stock browser, Safari, track our data for ads purposes. Another good example would be to avoid others from violating their privacy.
The default settings in Safari store all the websites and searches that users went to and allows them to easily get access to that information just in case they close all the tabs. Last but not least, auto-fill data, this feature is somewhat helpful as it automatically enters our login credential to a website, only if you’ve done so previously.