To connect a USB flash to an Android phone, first you need a USB OTG (on the go) cable with a male micro USB connector on one end and a female full size USB port on the other. Second, you have to install StickMount from Google play store. Then connect OTG cable to your phone, attach a USB Flash drive to the OTG cable. Check “use by default” and tap OK. Grant StickMount super user access. Open your file manager, then navigate to the USB storage drive, and copy, delete, move or open files as needed.