The document discusses using third party iPhone backup software for transferring files from an iPhone 3GS. It notes that while iTunes can be used, it has limitations like slow transfers and data loss issues. In contrast, backup software allows complete backups of contacts, emails, notes, and media without data loss. It provides an easy to use interface and supports automatic high speed transfers between iPhone, PC and Mac. Instructions are given for both Windows and Mac systems on how to download, install and use the software to backup iPhone files.