You’ve got your iPhone in one hand and your flash drive in the other. Getting them to work together may seem daunting: The iPhone doesn’t have a USB port, nor could it support one if it were connected externally. To get your files from your flash drive to your iPhone, you need to use your computer as an intermediary. Before you begin, have iTunes installed on your computer and the FileApp application installed on your iPhone (see Resources). This tutorial is applicable for both Mac and PC users. Writer Bio
