This document discusses data loss situations on the iPhone 4 and how to recover lost data. It provides information on features of the iPhone 4 and reasons for data loss like accidental deletion or virus attacks. It then introduces iPhone backup software as a solution to restore data from backups or create new backups if needed. Instructions are given for both Windows and Mac users on how to connect the iPhone, select files, backup to a computer or iTunes, and access the backed up data.