It is using Wifi configuration. You can backup data and share using your PC and Mac book Support protocol HTTP, FTP Support file type Picture : jpeg, jpg, png, tiff, tif, bmp, gif…. Sound : wav, 3gp, mp3 … Movie : mov, mp4 … Document : doc, xls, ppt, pdf, rtf, txt, html, htm. How to. 1. Connect from your computer over the Wi-Fi network. and it must be exist iPhone in same wi-fi. 2. Run a web browser / ftp client in PC (Mac or Windows) 3. Connect to designated ip address in Apps screen. 4. upload your files in browser or ftp client. Others. It is included simple viewer, reader, player … and password protected. It is very easy, and It is free.