Image by Victor Svensson via Flickr

Two days after the iOS 4 release and a day before the iPhone 4 launch Apple has published official user guides for the iPhone 4 and iOS 4 in PDF format ( No, they don’t hate all Adobe softwares – its just Flash they don’t like). If you got few hours to kill either waiting for a pre-ordered iPhone 4 to arrive or camping out to purchase one tomorrow, you can go through the guide for your reading pleasure.

The iOS 4 user guide has the expected information about features such as Mail, Calendar, iPod among others. The best new feature about the updated software is of course the ability to handle background apps, tapping the home button twice brings up programs running in the background.

The 243-page guide, which is also available in an iPhone-formatted version accessible through Safari for iPhone, is broken down into 28 chapters and offers information on the features of iOS 4 as they relate to Apple’s new iPhone 4 and 3GS devices.