I deleted my USB storage and then added some files from my computer to my phone. Most (but not all) of the files that should have been deleted are still present. All the music files are there, and the photos show up in the gallery but the files are actually gone. The files I added are not showing up on the phone. I find managing files between my laptop and my phone to be ridiculously hard and I cannot figure out anything. Please help before I do more damage.