This is truly baffling me. I exported a file from my dropbox to a folder in my internal storage. But I cannot figure out any way to actually access the internal storage to open this file. I want to be able to access the file and then choose which application to open it with. I went into settings>storage but all I can do here is access apps, pictures and video in the gallery, and music in play music. There are no signs of my files anywhere.