I have attempted all I can do to fix this. I contacted support through T- Mobile and they sugested I download a file manager, but I can't because I don't have enough memory to download one. I went as far as uninstalling other apps trying to get some memory, but all to no avail. Same with music I've downloaded. I didn't have a music manager, didn't know I needed one. On my old droidX I had no problems like this. I don't understand why I'm unable to move anything to the sd card or pull up any files. Truly at this point I wish I wouldn't have gotten this Galaxy Centura. I'm at the point of smashing it with a hammer. HELP???!!!