We have a project that a phone can view the files inside the usb flash drive and download or upload a file to it, via bluetooth. The phone should view the files as if it is part of your memory, can view/open folders, delete, rename files. But our problem is the bluetooth programming and we don't know where to start. We already have an idea for the USB host and sending data is our main problem. How to program java serially? and how can it detect if it is a file, folder or any file just by getting data serially 1010101 ? Help please. Thank you so much!!