As of February 2015, manuals for the latest iPhone models are available free of charge on the official Apple website on its Manuals page. Apple's latest iPhone models are the iPhone 6 and iPhone 6 Plus, both of which were released in September 2014.
Other manuals available for download by navigating to the Apple website include iPhone User Guides for operating systems iOS 8.1, iOS 7.1 and iOS 6.1. Other viewable manuals include iPhone user guides and warranty information for previous iPhone models, such as the iPhone 5 and 4S, a user guide for earbuds, and user guides for the Nike iPod sensor. These manuals are in PDF format.