PDF

• PDF files can be downloaded, read and saved onto an iPhone with the right PDF application. PDF applications, such as GoodReader and Mobile PDF Viewer, are accessible to iPhone users through the online network. Once the programs are installed successfully onto the iPhone, PDF documents are available to the user.
  
  

Multimedia Files

• Music and video files are recognized by iPhones. According to the Apple's iPhone User's Guide, iPhones can sync with iPods for the sharing of multimedia files. iTunes, the multimedia program from Apple, is readily available on iPhones to allow for the easy transfer of content from one device to another.
  
  

Photo Files

• The iPhone also is equipped to utilize two types of image file formats: PNG and JPEG. PNG is the preferred photo file type for iPhones, but iPhone cameras store images in a JPEG format. JPEG files are saved as smaller files, which impacts the quality of the photo.