system files application How to open/access app file folder such as; device;sdcard;emulater0; sdcard emulater; and what do they mean?  when i try to open them it says "doesn't have app to view" What is a good app to get to view them? do i need to do it on a computer? Also  Facefile says no media with a bunch of letters  What is this?; How to view Thumbnailsin the file folder?  thank you in advance for any help with this. i have a samsung Galaxy s3
I would try ES File Explorer. It's a really useful manager and could probably open it.

If not, you can use Root Explorer. Yes, you will need root, and yes, it costs, money. But if you change your system files a lot it's a really great tool. Plus, you have a 2 hour trial period after you purchase, so if it doesn't work you can get a refund.