Clearing Your Tracks
Every time you browse the Internet, you leave behind traces of where you've been in your web history; these are called cookies, and they are saved in a cache. (This is not unique to the iPhone; it's the case with most web browsers.)
The iPhone's history list stores a list of all the websites you've visited. The cookies list stores cookies on your iPhone left by sites you've visited. (You might think of these as breadcrumbs that you've left behind, except that each one has identifying information on it. Sites such as Amazon.com store cookies so they can recognize you when you revisit the site.) The cache stores bits and pieces of visited websites, so the next time you visit that site, your iPhone can retrieve part of the web ...
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