Files can be easily transferred to iPhone 4 iPod Touch 4 and iPad using easy to use free tools available on the internet . Below are few of these tools reviewed for you .
iFunBox : iFunBox File Manager for iPhone 4 allows you to transfer and manage files on your device connected via USB. You can use ut as a high-speed storage device . Transfer Movies and Music to your iPhone 4 iPod Touch and iPad .
DiskAid : DiskAid is another tool available both on Mac and Windows which allows you to transfer files between your computer and iPhone also giving access to your text messages , notes, call history,camera roll etc .