Mobile file manager is a Blackberry App that lets you browse all of the files on your blackberry. I tried deleting all of the sample stuff because I was so low on memory and after I installed this app and browsed my devices memory at a file system level I was shocked at what I found. Browse to "device memory" then "samples" and you will see a bunch of folders that contain literally megabytes of junk. I was able to free up a ton off memory, and this app also helps me keep track of any music, Pics, Videos, etc that ends up in my device memory and easily move them to my memory card. It was pretty cheap and definitely worth it.