I have small problem with my phone. When I want to delete anything i just cant, there is no problem with installing apps or uninstalling them, but photos music and other files are !@#!@$!@$!@. Except spotify i want to install it BUT am getting notification with error -505. I even try to delete some music from my pc but when i delete them on computer they appear again ???XD??? (thanks in advice and sorry for my English am triggered)