Clearing iPhone cache
Clearing the cache on an iPhone can help improve your experience across browsers, menus, and apps.
  • You can clear the cache, history, and cookies on your iPhone to improve its speed and performance. 
  • Clearing your iPhone's app cache can also free up extra storage space.
  • When you clear your iPhone's cache, you might get logged out of some websites and apps.

Your iPhone, like every kind of computer, relies on data caches to store important information and respond quickly to your commands.