What is Caching?

Caching automatically stores data on your phone or tablet when it is first downloaded from the websites you visit and apps you use. Each web page and app requests a set of objects, and it is these objects (data) that are cached (e.g., text, images, CSS, JavaScript, etc.). The next time you visit the same website (e.g., Facebook) or use an app, the data in your cache can be used, instead of downloading the same data again. The only data required to be downloaded is dynamic content that has changed, or objects which were not previously cached.