In cell phones and networks, a cache usually refers to a memory storage area in the phone or network that stores copies of information that is likely to be needed in the near future, so it can be accessed faster.

For example, when you visit a web page on your phone, a copy of the page may be stored in the phone's cache memory. Then if that page is requested again, it can instantly be displayed from the cache, instead of waiting for the page to download from the Internet again.