When I bought my Galaxy Tab 4 last year, the salesman told me not to worry about it only having 8GB of memory because he could sell me an SD card for additional memory. As many others have pointed out in this forum, most apps cannot be loaded to the card. I use my tablet primarily to listen to audiobooks through Overdrive but cannot download a book because I don't have enough memory I have removed most of my apps, photos, data files, etc., to no avail. What are the Miscellaneous files and can some be deleted. Is it usual for the system to be using almost 4GB of the 8GB? I would appreciate your advice.