When you've finished browsing, you can delete your private data, such as your browsing history.
- Swipe in from the right of the screen, and tap Settings.
- Tap Options, and under History, select what you want to delete, and tap Delete.
A cache is a memory location that is used to store data temporarily. If you have, or have tried to, access confidential info or a secure service, requiring passwords, clear the cache after each use.