qqp question1: Why I couldn't find files in SD card while it shows memory in use? question2: There's this file in my in my home directory, which is weird. When I tried to open it, it shows 'couldn't open the file' and the file size it shows is 101.2gb and the type, it shows 'Binary-application/octet stream'. I am scared to delete it. I might delete some files along with it. What do I do?