To find user guides for various Apple iPhone models, access the iPhone Manuals section on Apple.com, and select the desired user guide. Open the user guide as a PDF file, a Web page or a downloadable Apple iBook by clicking on the appropriate link below the selected user guide.
Navigate to Apple.com, click on the Support link, and then click on the iPhone icon. Select the Manuals option from the navigation menu on the left, find the desired iPhone model, and open the user guide, quick-start guide or safety information for the selected device. To download the user guide for free, install iTunes, click on the iBooks link in the Manuals section, and click on the View in iTunes button.