A system and method for automatically presenting a media file on a mobile device based on an analysis of metadata associated with the media file. The system evaluates a media file's metadata to determine whether the media file is relevant to a mobile device user based on time, date, location, subject matter, or other criteria. If the media file is relevant to the user, the system automatically displays the media file on the mobile device. By presenting the media file to a mobile device user, the system reminds the user of fond memories associated with past dates, people, events, or places. In some embodiments, the system may also prompt a user of the mobile device to take an action related to the media file presented on the mobile device, such as prompting the user to place a telephone call to a person pictured in the image.